feat(计费): 支持账号计费倍率快照与统计展示

- 新增 accounts.rate_multiplier（默认 1.0，允许 0）
- 使用 usage_logs.account_rate_multiplier 记录倍率快照，避免历史回算
- 统计/导出/管理端展示账号口径费用（total_cost * account_rate_multiplier）

backend/ent/account.go

@@ -43,6 +43,8 @@ type Account struct {
 	Concurrency int `json:"concurrency,omitempty"`
 	// Priority holds the value of the "priority" field.
 	Priority int `json:"priority,omitempty"`
+	// RateMultiplier holds the value of the "rate_multiplier" field.
+	RateMultiplier float64 `json:"rate_multiplier,omitempty"`
 	// Status holds the value of the "status" field.
 	Status string `json:"status,omitempty"`
 	// ErrorMessage holds the value of the "error_message" field.
@@ -135,6 +137,8 @@ func (*Account) scanValues(columns []string) ([]any, error) {
 			values[i] = new([]byte)
 		case account.FieldAutoPauseOnExpired, account.FieldSchedulable:
 			values[i] = new(sql.NullBool)
+		case account.FieldRateMultiplier:
+			values[i] = new(sql.NullFloat64)
 		case account.FieldID, account.FieldProxyID, account.FieldConcurrency, account.FieldPriority:
 			values[i] = new(sql.NullInt64)
 		case account.FieldName, account.FieldNotes, account.FieldPlatform, account.FieldType, account.FieldStatus, account.FieldErrorMessage, account.FieldSessionWindowStatus:
@@ -241,6 +245,12 @@ func (_m *Account) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.Priority = int(value.Int64)
 			}
+		case account.FieldRateMultiplier:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field rate_multiplier", values[i])
+			} else if value.Valid {
+				_m.RateMultiplier = value.Float64
+			}
 		case account.FieldStatus:
 			if value, ok := values[i].(*sql.NullString); !ok {
 				return fmt.Errorf("unexpected type %T for field status", values[i])
@@ -420,6 +430,9 @@ func (_m *Account) String() string {
 	builder.WriteString("priority=")
 	builder.WriteString(fmt.Sprintf("%v", _m.Priority))
 	builder.WriteString(", ")
+	builder.WriteString("rate_multiplier=")
+	builder.WriteString(fmt.Sprintf("%v", _m.RateMultiplier))
+	builder.WriteString(", ")
 	builder.WriteString("status=")
 	builder.WriteString(_m.Status)
 	builder.WriteString(", ")

backend/ent/account/account.go

@@ -39,6 +39,8 @@ const (
 	FieldConcurrency = "concurrency"
 	// FieldPriority holds the string denoting the priority field in the database.
 	FieldPriority = "priority"
+	// FieldRateMultiplier holds the string denoting the rate_multiplier field in the database.
+	FieldRateMultiplier = "rate_multiplier"
 	// FieldStatus holds the string denoting the status field in the database.
 	FieldStatus = "status"
 	// FieldErrorMessage holds the string denoting the error_message field in the database.
@@ -116,6 +118,7 @@ var Columns = []string{
 	FieldProxyID,
 	FieldConcurrency,
 	FieldPriority,
+	FieldRateMultiplier,
 	FieldStatus,
 	FieldErrorMessage,
 	FieldLastUsedAt,
@@ -174,6 +177,8 @@ var (
 	DefaultConcurrency int
 	// DefaultPriority holds the default value on creation for the "priority" field.
 	DefaultPriority int
+	// DefaultRateMultiplier holds the default value on creation for the "rate_multiplier" field.
+	DefaultRateMultiplier float64
 	// DefaultStatus holds the default value on creation for the "status" field.
 	DefaultStatus string
 	// StatusValidator is a validator for the "status" field. It is called by the builders before save.
@@ -244,6 +249,11 @@ func ByPriority(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldPriority, opts...).ToFunc()
 }
 
+// ByRateMultiplier orders the results by the rate_multiplier field.
+func ByRateMultiplier(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldRateMultiplier, opts...).ToFunc()
+}
+
 // ByStatus orders the results by the status field.
 func ByStatus(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldStatus, opts...).ToFunc()

backend/ent/account/where.go

@@ -105,6 +105,11 @@ func Priority(v int) predicate.Account {
 	return predicate.Account(sql.FieldEQ(FieldPriority, v))
 }
 
+// RateMultiplier applies equality check predicate on the "rate_multiplier" field. It's identical to RateMultiplierEQ.
+func RateMultiplier(v float64) predicate.Account {
+	return predicate.Account(sql.FieldEQ(FieldRateMultiplier, v))
+}
+
 // Status applies equality check predicate on the "status" field. It's identical to StatusEQ.
 func Status(v string) predicate.Account {
 	return predicate.Account(sql.FieldEQ(FieldStatus, v))
@@ -675,6 +680,46 @@ func PriorityLTE(v int) predicate.Account {
 	return predicate.Account(sql.FieldLTE(FieldPriority, v))
 }
 
+// RateMultiplierEQ applies the EQ predicate on the "rate_multiplier" field.
+func RateMultiplierEQ(v float64) predicate.Account {
+	return predicate.Account(sql.FieldEQ(FieldRateMultiplier, v))
+}
+
+// RateMultiplierNEQ applies the NEQ predicate on the "rate_multiplier" field.
+func RateMultiplierNEQ(v float64) predicate.Account {
+	return predicate.Account(sql.FieldNEQ(FieldRateMultiplier, v))
+}
+
+// RateMultiplierIn applies the In predicate on the "rate_multiplier" field.
+func RateMultiplierIn(vs ...float64) predicate.Account {
+	return predicate.Account(sql.FieldIn(FieldRateMultiplier, vs...))
+}
+
+// RateMultiplierNotIn applies the NotIn predicate on the "rate_multiplier" field.
+func RateMultiplierNotIn(vs ...float64) predicate.Account {
+	return predicate.Account(sql.FieldNotIn(FieldRateMultiplier, vs...))
+}
+
+// RateMultiplierGT applies the GT predicate on the "rate_multiplier" field.
+func RateMultiplierGT(v float64) predicate.Account {
+	return predicate.Account(sql.FieldGT(FieldRateMultiplier, v))
+}
+
+// RateMultiplierGTE applies the GTE predicate on the "rate_multiplier" field.
+func RateMultiplierGTE(v float64) predicate.Account {
+	return predicate.Account(sql.FieldGTE(FieldRateMultiplier, v))
+}
+
+// RateMultiplierLT applies the LT predicate on the "rate_multiplier" field.
+func RateMultiplierLT(v float64) predicate.Account {
+	return predicate.Account(sql.FieldLT(FieldRateMultiplier, v))
+}
+
+// RateMultiplierLTE applies the LTE predicate on the "rate_multiplier" field.
+func RateMultiplierLTE(v float64) predicate.Account {
+	return predicate.Account(sql.FieldLTE(FieldRateMultiplier, v))
+}
+
 // StatusEQ applies the EQ predicate on the "status" field.
 func StatusEQ(v string) predicate.Account {
 	return predicate.Account(sql.FieldEQ(FieldStatus, v))

backend/ent/account_create.go

@@ -153,6 +153,20 @@ func (_c *AccountCreate) SetNillablePriority(v *int) *AccountCreate {
 	return _c
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (_c *AccountCreate) SetRateMultiplier(v float64) *AccountCreate {
+	_c.mutation.SetRateMultiplier(v)
+	return _c
+}
+
+// SetNillableRateMultiplier sets the "rate_multiplier" field if the given value is not nil.
+func (_c *AccountCreate) SetNillableRateMultiplier(v *float64) *AccountCreate {
+	if v != nil {
+		_c.SetRateMultiplier(*v)
+	}
+	return _c
+}
+
 // SetStatus sets the "status" field.
 func (_c *AccountCreate) SetStatus(v string) *AccountCreate {
 	_c.mutation.SetStatus(v)
@@ -429,6 +443,10 @@ func (_c *AccountCreate) defaults() error {
 		v := account.DefaultPriority
 		_c.mutation.SetPriority(v)
 	}
+	if _, ok := _c.mutation.RateMultiplier(); !ok {
+		v := account.DefaultRateMultiplier
+		_c.mutation.SetRateMultiplier(v)
+	}
 	if _, ok := _c.mutation.Status(); !ok {
 		v := account.DefaultStatus
 		_c.mutation.SetStatus(v)
@@ -488,6 +506,9 @@ func (_c *AccountCreate) check() error {
 	if _, ok := _c.mutation.Priority(); !ok {
 		return &ValidationError{Name: "priority", err: errors.New(`ent: missing required field "Account.priority"`)}
 	}
+	if _, ok := _c.mutation.RateMultiplier(); !ok {
+		return &ValidationError{Name: "rate_multiplier", err: errors.New(`ent: missing required field "Account.rate_multiplier"`)}
+	}
 	if _, ok := _c.mutation.Status(); !ok {
 		return &ValidationError{Name: "status", err: errors.New(`ent: missing required field "Account.status"`)}
 	}
@@ -578,6 +599,10 @@ func (_c *AccountCreate) createSpec() (*Account, *sqlgraph.CreateSpec) {
 		_spec.SetField(account.FieldPriority, field.TypeInt, value)
 		_node.Priority = value
 	}
+	if value, ok := _c.mutation.RateMultiplier(); ok {
+		_spec.SetField(account.FieldRateMultiplier, field.TypeFloat64, value)
+		_node.RateMultiplier = value
+	}
 	if value, ok := _c.mutation.Status(); ok {
 		_spec.SetField(account.FieldStatus, field.TypeString, value)
 		_node.Status = value
@@ -893,6 +918,24 @@ func (u *AccountUpsert) AddPriority(v int) *AccountUpsert {
 	return u
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (u *AccountUpsert) SetRateMultiplier(v float64) *AccountUpsert {
+	u.Set(account.FieldRateMultiplier, v)
+	return u
+}
+
+// UpdateRateMultiplier sets the "rate_multiplier" field to the value that was provided on create.
+func (u *AccountUpsert) UpdateRateMultiplier() *AccountUpsert {
+	u.SetExcluded(account.FieldRateMultiplier)
+	return u
+}
+
+// AddRateMultiplier adds v to the "rate_multiplier" field.
+func (u *AccountUpsert) AddRateMultiplier(v float64) *AccountUpsert {
+	u.Add(account.FieldRateMultiplier, v)
+	return u
+}
+
 // SetStatus sets the "status" field.
 func (u *AccountUpsert) SetStatus(v string) *AccountUpsert {
 	u.Set(account.FieldStatus, v)
@@ -1325,6 +1368,27 @@ func (u *AccountUpsertOne) UpdatePriority() *AccountUpsertOne {
 	})
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (u *AccountUpsertOne) SetRateMultiplier(v float64) *AccountUpsertOne {
+	return u.Update(func(s *AccountUpsert) {
+		s.SetRateMultiplier(v)
+	})
+}
+
+// AddRateMultiplier adds v to the "rate_multiplier" field.
+func (u *AccountUpsertOne) AddRateMultiplier(v float64) *AccountUpsertOne {
+	return u.Update(func(s *AccountUpsert) {
+		s.AddRateMultiplier(v)
+	})
+}
+
+// UpdateRateMultiplier sets the "rate_multiplier" field to the value that was provided on create.
+func (u *AccountUpsertOne) UpdateRateMultiplier() *AccountUpsertOne {
+	return u.Update(func(s *AccountUpsert) {
+		s.UpdateRateMultiplier()
+	})
+}
+
 // SetStatus sets the "status" field.
 func (u *AccountUpsertOne) SetStatus(v string) *AccountUpsertOne {
 	return u.Update(func(s *AccountUpsert) {
@@ -1956,6 +2020,27 @@ func (u *AccountUpsertBulk) UpdatePriority() *AccountUpsertBulk {
 	})
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (u *AccountUpsertBulk) SetRateMultiplier(v float64) *AccountUpsertBulk {
+	return u.Update(func(s *AccountUpsert) {
+		s.SetRateMultiplier(v)
+	})
+}
+
+// AddRateMultiplier adds v to the "rate_multiplier" field.
+func (u *AccountUpsertBulk) AddRateMultiplier(v float64) *AccountUpsertBulk {
+	return u.Update(func(s *AccountUpsert) {
+		s.AddRateMultiplier(v)
+	})
+}
+
+// UpdateRateMultiplier sets the "rate_multiplier" field to the value that was provided on create.
+func (u *AccountUpsertBulk) UpdateRateMultiplier() *AccountUpsertBulk {
+	return u.Update(func(s *AccountUpsert) {
+		s.UpdateRateMultiplier()
+	})
+}
+
 // SetStatus sets the "status" field.
 func (u *AccountUpsertBulk) SetStatus(v string) *AccountUpsertBulk {
 	return u.Update(func(s *AccountUpsert) {

backend/ent/account_update.go

@@ -193,6 +193,27 @@ func (_u *AccountUpdate) AddPriority(v int) *AccountUpdate {
 	return _u
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (_u *AccountUpdate) SetRateMultiplier(v float64) *AccountUpdate {
+	_u.mutation.ResetRateMultiplier()
+	_u.mutation.SetRateMultiplier(v)
+	return _u
+}
+
+// SetNillableRateMultiplier sets the "rate_multiplier" field if the given value is not nil.
+func (_u *AccountUpdate) SetNillableRateMultiplier(v *float64) *AccountUpdate {
+	if v != nil {
+		_u.SetRateMultiplier(*v)
+	}
+	return _u
+}
+
+// AddRateMultiplier adds value to the "rate_multiplier" field.
+func (_u *AccountUpdate) AddRateMultiplier(v float64) *AccountUpdate {
+	_u.mutation.AddRateMultiplier(v)
+	return _u
+}
+
 // SetStatus sets the "status" field.
 func (_u *AccountUpdate) SetStatus(v string) *AccountUpdate {
 	_u.mutation.SetStatus(v)
@@ -629,6 +650,12 @@ func (_u *AccountUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if value, ok := _u.mutation.AddedPriority(); ok {
 		_spec.AddField(account.FieldPriority, field.TypeInt, value)
 	}
+	if value, ok := _u.mutation.RateMultiplier(); ok {
+		_spec.SetField(account.FieldRateMultiplier, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedRateMultiplier(); ok {
+		_spec.AddField(account.FieldRateMultiplier, field.TypeFloat64, value)
+	}
 	if value, ok := _u.mutation.Status(); ok {
 		_spec.SetField(account.FieldStatus, field.TypeString, value)
 	}
@@ -1005,6 +1032,27 @@ func (_u *AccountUpdateOne) AddPriority(v int) *AccountUpdateOne {
 	return _u
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (_u *AccountUpdateOne) SetRateMultiplier(v float64) *AccountUpdateOne {
+	_u.mutation.ResetRateMultiplier()
+	_u.mutation.SetRateMultiplier(v)
+	return _u
+}
+
+// SetNillableRateMultiplier sets the "rate_multiplier" field if the given value is not nil.
+func (_u *AccountUpdateOne) SetNillableRateMultiplier(v *float64) *AccountUpdateOne {
+	if v != nil {
+		_u.SetRateMultiplier(*v)
+	}
+	return _u
+}
+
+// AddRateMultiplier adds value to the "rate_multiplier" field.
+func (_u *AccountUpdateOne) AddRateMultiplier(v float64) *AccountUpdateOne {
+	_u.mutation.AddRateMultiplier(v)
+	return _u
+}
+
 // SetStatus sets the "status" field.
 func (_u *AccountUpdateOne) SetStatus(v string) *AccountUpdateOne {
 	_u.mutation.SetStatus(v)
@@ -1471,6 +1519,12 @@ func (_u *AccountUpdateOne) sqlSave(ctx context.Context) (_node *Account, err er
 	if value, ok := _u.mutation.AddedPriority(); ok {
 		_spec.AddField(account.FieldPriority, field.TypeInt, value)
 	}
+	if value, ok := _u.mutation.RateMultiplier(); ok {
+		_spec.SetField(account.FieldRateMultiplier, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedRateMultiplier(); ok {
+		_spec.AddField(account.FieldRateMultiplier, field.TypeFloat64, value)
+	}
 	if value, ok := _u.mutation.Status(); ok {
 		_spec.SetField(account.FieldStatus, field.TypeString, value)
 	}

backend/ent/migrate/schema.go

@@ -79,6 +79,7 @@ var (
 		{Name: "extra", Type: field.TypeJSON, SchemaType: map[string]string{"postgres": "jsonb"}},
 		{Name: "concurrency", Type: field.TypeInt, Default: 3},
 		{Name: "priority", Type: field.TypeInt, Default: 50},
+		{Name: "rate_multiplier", Type: field.TypeFloat64, Default: 1, SchemaType: map[string]string{"postgres": "decimal(10,4)"}},
 		{Name: "status", Type: field.TypeString, Size: 20, Default: "active"},
 		{Name: "error_message", Type: field.TypeString, Nullable: true, SchemaType: map[string]string{"postgres": "text"}},
 		{Name: "last_used_at", Type: field.TypeTime, Nullable: true, SchemaType: map[string]string{"postgres": "timestamptz"}},
@@ -101,7 +102,7 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "accounts_proxies_proxy",
-				Columns:    []*schema.Column{AccountsColumns[24]},
+				Columns:    []*schema.Column{AccountsColumns[25]},
 				RefColumns: []*schema.Column{ProxiesColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -120,12 +121,12 @@ var (
 			{
 				Name:    "account_status",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[12]},
+				Columns: []*schema.Column{AccountsColumns[13]},
 			},
 			{
 				Name:    "account_proxy_id",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[24]},
+				Columns: []*schema.Column{AccountsColumns[25]},
 			},
 			{
 				Name:    "account_priority",
@@ -135,27 +136,27 @@ var (
 			{
 				Name:    "account_last_used_at",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[14]},
+				Columns: []*schema.Column{AccountsColumns[15]},
 			},
 			{
 				Name:    "account_schedulable",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[17]},
+				Columns: []*schema.Column{AccountsColumns[18]},
 			},
 			{
 				Name:    "account_rate_limited_at",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[18]},
+				Columns: []*schema.Column{AccountsColumns[19]},
 			},
 			{
 				Name:    "account_rate_limit_reset_at",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[19]},
+				Columns: []*schema.Column{AccountsColumns[20]},
 			},
 			{
 				Name:    "account_overload_until",
 				Unique:  false,
-				Columns: []*schema.Column{AccountsColumns[20]},
+				Columns: []*schema.Column{AccountsColumns[21]},
 			},
 			{
 				Name:    "account_deleted_at",
@@ -449,6 +450,7 @@ var (
 		{Name: "total_cost", Type: field.TypeFloat64, Default: 0, SchemaType: map[string]string{"postgres": "decimal(20,10)"}},
 		{Name: "actual_cost", Type: field.TypeFloat64, Default: 0, SchemaType: map[string]string{"postgres": "decimal(20,10)"}},
 		{Name: "rate_multiplier", Type: field.TypeFloat64, Default: 1, SchemaType: map[string]string{"postgres": "decimal(10,4)"}},
+		{Name: "account_rate_multiplier", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(10,4)"}},
 		{Name: "billing_type", Type: field.TypeInt8, Default: 0},
 		{Name: "stream", Type: field.TypeBool, Default: false},
 		{Name: "duration_ms", Type: field.TypeInt, Nullable: true},
@@ -472,31 +474,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[25]},
+				Columns:    []*schema.Column{UsageLogsColumns[26]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[26]},
+				Columns:    []*schema.Column{UsageLogsColumns[27]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[27]},
+				Columns:    []*schema.Column{UsageLogsColumns[28]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[28]},
+				Columns:    []*schema.Column{UsageLogsColumns[29]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[29]},
+				Columns:    []*schema.Column{UsageLogsColumns[30]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -505,32 +507,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[28]},
+				Columns: []*schema.Column{UsageLogsColumns[29]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[25]},
+				Columns: []*schema.Column{UsageLogsColumns[26]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[26]},
+				Columns: []*schema.Column{UsageLogsColumns[27]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[27]},
+				Columns: []*schema.Column{UsageLogsColumns[28]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[29]},
+				Columns: []*schema.Column{UsageLogsColumns[30]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[24]},
+				Columns: []*schema.Column{UsageLogsColumns[25]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -545,12 +547,12 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[28], UsageLogsColumns[24]},
+				Columns: []*schema.Column{UsageLogsColumns[29], UsageLogsColumns[25]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[25], UsageLogsColumns[24]},
+				Columns: []*schema.Column{UsageLogsColumns[26], UsageLogsColumns[25]},
 			},
 		},
 	}

backend/ent/mutation.go

@@ -1187,6 +1187,8 @@ type AccountMutation struct {
 	addconcurrency        *int
 	priority              *int
 	addpriority           *int
+	rate_multiplier       *float64
+	addrate_multiplier    *float64
 	status                *string
 	error_message         *string
 	last_used_at          *time.Time
@@ -1822,6 +1824,62 @@ func (m *AccountMutation) ResetPriority() {
 	m.addpriority = nil
 }
 
+// SetRateMultiplier sets the "rate_multiplier" field.
+func (m *AccountMutation) SetRateMultiplier(f float64) {
+	m.rate_multiplier = &f
+	m.addrate_multiplier = nil
+}
+
+// RateMultiplier returns the value of the "rate_multiplier" field in the mutation.
+func (m *AccountMutation) RateMultiplier() (r float64, exists bool) {
+	v := m.rate_multiplier
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldRateMultiplier returns the old "rate_multiplier" field's value of the Account entity.
+// If the Account object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *AccountMutation) OldRateMultiplier(ctx context.Context) (v float64, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldRateMultiplier is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldRateMultiplier requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldRateMultiplier: %w", err)
+	}
+	return oldValue.RateMultiplier, nil
+}
+
+// AddRateMultiplier adds f to the "rate_multiplier" field.
+func (m *AccountMutation) AddRateMultiplier(f float64) {
+	if m.addrate_multiplier != nil {
+		*m.addrate_multiplier += f
+	} else {
+		m.addrate_multiplier = &f
+	}
+}
+
+// AddedRateMultiplier returns the value that was added to the "rate_multiplier" field in this mutation.
+func (m *AccountMutation) AddedRateMultiplier() (r float64, exists bool) {
+	v := m.addrate_multiplier
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ResetRateMultiplier resets all changes to the "rate_multiplier" field.
+func (m *AccountMutation) ResetRateMultiplier() {
+	m.rate_multiplier = nil
+	m.addrate_multiplier = nil
+}
+
 // SetStatus sets the "status" field.
 func (m *AccountMutation) SetStatus(s string) {
 	m.status = &s
@@ -2540,7 +2598,7 @@ func (m *AccountMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *AccountMutation) Fields() []string {
-	fields := make([]string, 0, 24)
+	fields := make([]string, 0, 25)
 	if m.created_at != nil {
 		fields = append(fields, account.FieldCreatedAt)
 	}
@@ -2577,6 +2635,9 @@ func (m *AccountMutation) Fields() []string {
 	if m.priority != nil {
 		fields = append(fields, account.FieldPriority)
 	}
+	if m.rate_multiplier != nil {
+		fields = append(fields, account.FieldRateMultiplier)
+	}
 	if m.status != nil {
 		fields = append(fields, account.FieldStatus)
 	}
@@ -2645,6 +2706,8 @@ func (m *AccountMutation) Field(name string) (ent.Value, bool) {
 		return m.Concurrency()
 	case account.FieldPriority:
 		return m.Priority()
+	case account.FieldRateMultiplier:
+		return m.RateMultiplier()
 	case account.FieldStatus:
 		return m.Status()
 	case account.FieldErrorMessage:
@@ -2702,6 +2765,8 @@ func (m *AccountMutation) OldField(ctx context.Context, name string) (ent.Value,
 		return m.OldConcurrency(ctx)
 	case account.FieldPriority:
 		return m.OldPriority(ctx)
+	case account.FieldRateMultiplier:
+		return m.OldRateMultiplier(ctx)
 	case account.FieldStatus:
 		return m.OldStatus(ctx)
 	case account.FieldErrorMessage:
@@ -2819,6 +2884,13 @@ func (m *AccountMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetPriority(v)
 		return nil
+	case account.FieldRateMultiplier:
+		v, ok := value.(float64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetRateMultiplier(v)
+		return nil
 	case account.FieldStatus:
 		v, ok := value.(string)
 		if !ok {
@@ -2917,6 +2989,9 @@ func (m *AccountMutation) AddedFields() []string {
 	if m.addpriority != nil {
 		fields = append(fields, account.FieldPriority)
 	}
+	if m.addrate_multiplier != nil {
+		fields = append(fields, account.FieldRateMultiplier)
+	}
 	return fields
 }
 
@@ -2929,6 +3004,8 @@ func (m *AccountMutation) AddedField(name string) (ent.Value, bool) {
 		return m.AddedConcurrency()
 	case account.FieldPriority:
 		return m.AddedPriority()
+	case account.FieldRateMultiplier:
+		return m.AddedRateMultiplier()
 	}
 	return nil, false
 }
@@ -2952,6 +3029,13 @@ func (m *AccountMutation) AddField(name string, value ent.Value) error {
 		}
 		m.AddPriority(v)
 		return nil
+	case account.FieldRateMultiplier:
+		v, ok := value.(float64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddRateMultiplier(v)
+		return nil
 	}
 	return fmt.Errorf("unknown Account numeric field %s", name)
 }
@@ -3090,6 +3174,9 @@ func (m *AccountMutation) ResetField(name string) error {
 	case account.FieldPriority:
 		m.ResetPriority()
 		return nil
+	case account.FieldRateMultiplier:
+		m.ResetRateMultiplier()
+		return nil
 	case account.FieldStatus:
 		m.ResetStatus()
 		return nil
@@ -10190,6 +10277,8 @@ type UsageLogMutation struct {
 	addactual_cost              *float64
 	rate_multiplier             *float64
 	addrate_multiplier          *float64
+	account_rate_multiplier     *float64
+	addaccount_rate_multiplier  *float64
 	billing_type                *int8
 	addbilling_type             *int8
 	stream                      *bool
@@ -11323,6 +11412,76 @@ func (m *UsageLogMutation) ResetRateMultiplier() {
 	m.addrate_multiplier = nil
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (m *UsageLogMutation) SetAccountRateMultiplier(f float64) {
+	m.account_rate_multiplier = &f
+	m.addaccount_rate_multiplier = nil
+}
+
+// AccountRateMultiplier returns the value of the "account_rate_multiplier" field in the mutation.
+func (m *UsageLogMutation) AccountRateMultiplier() (r float64, exists bool) {
+	v := m.account_rate_multiplier
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldAccountRateMultiplier returns the old "account_rate_multiplier" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldAccountRateMultiplier(ctx context.Context) (v *float64, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldAccountRateMultiplier is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldAccountRateMultiplier requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldAccountRateMultiplier: %w", err)
+	}
+	return oldValue.AccountRateMultiplier, nil
+}
+
+// AddAccountRateMultiplier adds f to the "account_rate_multiplier" field.
+func (m *UsageLogMutation) AddAccountRateMultiplier(f float64) {
+	if m.addaccount_rate_multiplier != nil {
+		*m.addaccount_rate_multiplier += f
+	} else {
+		m.addaccount_rate_multiplier = &f
+	}
+}
+
+// AddedAccountRateMultiplier returns the value that was added to the "account_rate_multiplier" field in this mutation.
+func (m *UsageLogMutation) AddedAccountRateMultiplier() (r float64, exists bool) {
+	v := m.addaccount_rate_multiplier
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (m *UsageLogMutation) ClearAccountRateMultiplier() {
+	m.account_rate_multiplier = nil
+	m.addaccount_rate_multiplier = nil
+	m.clearedFields[usagelog.FieldAccountRateMultiplier] = struct{}{}
+}
+
+// AccountRateMultiplierCleared returns if the "account_rate_multiplier" field was cleared in this mutation.
+func (m *UsageLogMutation) AccountRateMultiplierCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldAccountRateMultiplier]
+	return ok
+}
+
+// ResetAccountRateMultiplier resets all changes to the "account_rate_multiplier" field.
+func (m *UsageLogMutation) ResetAccountRateMultiplier() {
+	m.account_rate_multiplier = nil
+	m.addaccount_rate_multiplier = nil
+	delete(m.clearedFields, usagelog.FieldAccountRateMultiplier)
+}
+
 // SetBillingType sets the "billing_type" field.
 func (m *UsageLogMutation) SetBillingType(i int8) {
 	m.billing_type = &i
@@ -11963,7 +12122,7 @@ func (m *UsageLogMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *UsageLogMutation) Fields() []string {
-	fields := make([]string, 0, 29)
+	fields := make([]string, 0, 30)
 	if m.user != nil {
 		fields = append(fields, usagelog.FieldUserID)
 	}
@@ -12024,6 +12183,9 @@ func (m *UsageLogMutation) Fields() []string {
 	if m.rate_multiplier != nil {
 		fields = append(fields, usagelog.FieldRateMultiplier)
 	}
+	if m.account_rate_multiplier != nil {
+		fields = append(fields, usagelog.FieldAccountRateMultiplier)
+	}
 	if m.billing_type != nil {
 		fields = append(fields, usagelog.FieldBillingType)
 	}
@@ -12099,6 +12261,8 @@ func (m *UsageLogMutation) Field(name string) (ent.Value, bool) {
 		return m.ActualCost()
 	case usagelog.FieldRateMultiplier:
 		return m.RateMultiplier()
+	case usagelog.FieldAccountRateMultiplier:
+		return m.AccountRateMultiplier()
 	case usagelog.FieldBillingType:
 		return m.BillingType()
 	case usagelog.FieldStream:
@@ -12166,6 +12330,8 @@ func (m *UsageLogMutation) OldField(ctx context.Context, name string) (ent.Value
 		return m.OldActualCost(ctx)
 	case usagelog.FieldRateMultiplier:
 		return m.OldRateMultiplier(ctx)
+	case usagelog.FieldAccountRateMultiplier:
+		return m.OldAccountRateMultiplier(ctx)
 	case usagelog.FieldBillingType:
 		return m.OldBillingType(ctx)
 	case usagelog.FieldStream:
@@ -12333,6 +12499,13 @@ func (m *UsageLogMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetRateMultiplier(v)
 		return nil
+	case usagelog.FieldAccountRateMultiplier:
+		v, ok := value.(float64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetAccountRateMultiplier(v)
+		return nil
 	case usagelog.FieldBillingType:
 		v, ok := value.(int8)
 		if !ok {
@@ -12443,6 +12616,9 @@ func (m *UsageLogMutation) AddedFields() []string {
 	if m.addrate_multiplier != nil {
 		fields = append(fields, usagelog.FieldRateMultiplier)
 	}
+	if m.addaccount_rate_multiplier != nil {
+		fields = append(fields, usagelog.FieldAccountRateMultiplier)
+	}
 	if m.addbilling_type != nil {
 		fields = append(fields, usagelog.FieldBillingType)
 	}
@@ -12489,6 +12665,8 @@ func (m *UsageLogMutation) AddedField(name string) (ent.Value, bool) {
 		return m.AddedActualCost()
 	case usagelog.FieldRateMultiplier:
 		return m.AddedRateMultiplier()
+	case usagelog.FieldAccountRateMultiplier:
+		return m.AddedAccountRateMultiplier()
 	case usagelog.FieldBillingType:
 		return m.AddedBillingType()
 	case usagelog.FieldDurationMs:
@@ -12597,6 +12775,13 @@ func (m *UsageLogMutation) AddField(name string, value ent.Value) error {
 		}
 		m.AddRateMultiplier(v)
 		return nil
+	case usagelog.FieldAccountRateMultiplier:
+		v, ok := value.(float64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddAccountRateMultiplier(v)
+		return nil
 	case usagelog.FieldBillingType:
 		v, ok := value.(int8)
 		if !ok {
@@ -12639,6 +12824,9 @@ func (m *UsageLogMutation) ClearedFields() []string {
 	if m.FieldCleared(usagelog.FieldSubscriptionID) {
 		fields = append(fields, usagelog.FieldSubscriptionID)
 	}
+	if m.FieldCleared(usagelog.FieldAccountRateMultiplier) {
+		fields = append(fields, usagelog.FieldAccountRateMultiplier)
+	}
 	if m.FieldCleared(usagelog.FieldDurationMs) {
 		fields = append(fields, usagelog.FieldDurationMs)
 	}
@@ -12674,6 +12862,9 @@ func (m *UsageLogMutation) ClearField(name string) error {
 	case usagelog.FieldSubscriptionID:
 		m.ClearSubscriptionID()
 		return nil
+	case usagelog.FieldAccountRateMultiplier:
+		m.ClearAccountRateMultiplier()
+		return nil
 	case usagelog.FieldDurationMs:
 		m.ClearDurationMs()
 		return nil
@@ -12757,6 +12948,9 @@ func (m *UsageLogMutation) ResetField(name string) error {
 	case usagelog.FieldRateMultiplier:
 		m.ResetRateMultiplier()
 		return nil
+	case usagelog.FieldAccountRateMultiplier:
+		m.ResetAccountRateMultiplier()
+		return nil
 	case usagelog.FieldBillingType:
 		m.ResetBillingType()
 		return nil

backend/ent/runtime/runtime.go

@@ -177,22 +177,26 @@ func init() {
 	accountDescPriority := accountFields[8].Descriptor()
 	// account.DefaultPriority holds the default value on creation for the priority field.
 	account.DefaultPriority = accountDescPriority.Default.(int)
+	// accountDescRateMultiplier is the schema descriptor for rate_multiplier field.
+	accountDescRateMultiplier := accountFields[9].Descriptor()
+	// account.DefaultRateMultiplier holds the default value on creation for the rate_multiplier field.
+	account.DefaultRateMultiplier = accountDescRateMultiplier.Default.(float64)
 	// accountDescStatus is the schema descriptor for status field.
-	accountDescStatus := accountFields[9].Descriptor()
+	accountDescStatus := accountFields[10].Descriptor()
 	// account.DefaultStatus holds the default value on creation for the status field.
 	account.DefaultStatus = accountDescStatus.Default.(string)
 	// account.StatusValidator is a validator for the "status" field. It is called by the builders before save.
 	account.StatusValidator = accountDescStatus.Validators[0].(func(string) error)
 	// accountDescAutoPauseOnExpired is the schema descriptor for auto_pause_on_expired field.
-	accountDescAutoPauseOnExpired := accountFields[13].Descriptor()
+	accountDescAutoPauseOnExpired := accountFields[14].Descriptor()
 	// account.DefaultAutoPauseOnExpired holds the default value on creation for the auto_pause_on_expired field.
 	account.DefaultAutoPauseOnExpired = accountDescAutoPauseOnExpired.Default.(bool)
 	// accountDescSchedulable is the schema descriptor for schedulable field.
-	accountDescSchedulable := accountFields[14].Descriptor()
+	accountDescSchedulable := accountFields[15].Descriptor()
 	// account.DefaultSchedulable holds the default value on creation for the schedulable field.
 	account.DefaultSchedulable = accountDescSchedulable.Default.(bool)
 	// accountDescSessionWindowStatus is the schema descriptor for session_window_status field.
-	accountDescSessionWindowStatus := accountFields[20].Descriptor()
+	accountDescSessionWindowStatus := accountFields[21].Descriptor()
 	// account.SessionWindowStatusValidator is a validator for the "session_window_status" field. It is called by the builders before save.
 	account.SessionWindowStatusValidator = accountDescSessionWindowStatus.Validators[0].(func(string) error)
 	accountgroupFields := schema.AccountGroup{}.Fields()
@@ -578,31 +582,31 @@ func init() {
 	// usagelog.DefaultRateMultiplier holds the default value on creation for the rate_multiplier field.
 	usagelog.DefaultRateMultiplier = usagelogDescRateMultiplier.Default.(float64)
 	// usagelogDescBillingType is the schema descriptor for billing_type field.
-	usagelogDescBillingType := usagelogFields[20].Descriptor()
+	usagelogDescBillingType := usagelogFields[21].Descriptor()
 	// usagelog.DefaultBillingType holds the default value on creation for the billing_type field.
 	usagelog.DefaultBillingType = usagelogDescBillingType.Default.(int8)
 	// usagelogDescStream is the schema descriptor for stream field.
-	usagelogDescStream := usagelogFields[21].Descriptor()
+	usagelogDescStream := usagelogFields[22].Descriptor()
 	// usagelog.DefaultStream holds the default value on creation for the stream field.
 	usagelog.DefaultStream = usagelogDescStream.Default.(bool)
 	// usagelogDescUserAgent is the schema descriptor for user_agent field.
-	usagelogDescUserAgent := usagelogFields[24].Descriptor()
+	usagelogDescUserAgent := usagelogFields[25].Descriptor()
 	// usagelog.UserAgentValidator is a validator for the "user_agent" field. It is called by the builders before save.
 	usagelog.UserAgentValidator = usagelogDescUserAgent.Validators[0].(func(string) error)
 	// usagelogDescIPAddress is the schema descriptor for ip_address field.
-	usagelogDescIPAddress := usagelogFields[25].Descriptor()
+	usagelogDescIPAddress := usagelogFields[26].Descriptor()
 	// usagelog.IPAddressValidator is a validator for the "ip_address" field. It is called by the builders before save.
 	usagelog.IPAddressValidator = usagelogDescIPAddress.Validators[0].(func(string) error)
 	// usagelogDescImageCount is the schema descriptor for image_count field.
-	usagelogDescImageCount := usagelogFields[26].Descriptor()
+	usagelogDescImageCount := usagelogFields[27].Descriptor()
 	// usagelog.DefaultImageCount holds the default value on creation for the image_count field.
 	usagelog.DefaultImageCount = usagelogDescImageCount.Default.(int)
 	// usagelogDescImageSize is the schema descriptor for image_size field.
-	usagelogDescImageSize := usagelogFields[27].Descriptor()
+	usagelogDescImageSize := usagelogFields[28].Descriptor()
 	// usagelog.ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
 	usagelog.ImageSizeValidator = usagelogDescImageSize.Validators[0].(func(string) error)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[28].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[29].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()

backend/ent/schema/account.go

@@ -102,6 +102,12 @@ func (Account) Fields() []ent.Field {
 		field.Int("priority").
 			Default(50),
 
+		// rate_multiplier: 账号计费倍率（>=0，允许 0 表示该账号计费为 0）
+		// 仅影响账号维度计费口径，不影响用户/API Key 扣费（分组倍率）
+		field.Float("rate_multiplier").
+			SchemaType(map[string]string{dialect.Postgres: "decimal(10,4)"}).
+			Default(1.0),
+
 		// status: 账户状态，如 "active", "error", "disabled"
 		field.String("status").
 			MaxLen(20).

backend/ent/schema/usage_log.go

@@ -85,6 +85,12 @@ func (UsageLog) Fields() []ent.Field {
 			Default(1).
 			SchemaType(map[string]string{dialect.Postgres: "decimal(10,4)"}),
 
+		// account_rate_multiplier: 账号计费倍率快照（NULL 表示按 1.0 处理）
+		field.Float("account_rate_multiplier").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "decimal(10,4)"}),
+
 		// 其他字段
 		field.Int8("billing_type").
 			Default(0),

backend/ent/usagelog.go

@@ -62,6 +62,8 @@ type UsageLog struct {
 	ActualCost float64 `json:"actual_cost,omitempty"`
 	// RateMultiplier holds the value of the "rate_multiplier" field.
 	RateMultiplier float64 `json:"rate_multiplier,omitempty"`
+	// AccountRateMultiplier holds the value of the "account_rate_multiplier" field.
+	AccountRateMultiplier *float64 `json:"account_rate_multiplier,omitempty"`
 	// BillingType holds the value of the "billing_type" field.
 	BillingType int8 `json:"billing_type,omitempty"`
 	// Stream holds the value of the "stream" field.
@@ -165,7 +167,7 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 		switch columns[i] {
 		case usagelog.FieldStream:
 			values[i] = new(sql.NullBool)
-		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier:
+		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier, usagelog.FieldAccountRateMultiplier:
 			values[i] = new(sql.NullFloat64)
 		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
 			values[i] = new(sql.NullInt64)
@@ -316,6 +318,13 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.RateMultiplier = value.Float64
 			}
+		case usagelog.FieldAccountRateMultiplier:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field account_rate_multiplier", values[i])
+			} else if value.Valid {
+				_m.AccountRateMultiplier = new(float64)
+				*_m.AccountRateMultiplier = value.Float64
+			}
 		case usagelog.FieldBillingType:
 			if value, ok := values[i].(*sql.NullInt64); !ok {
 				return fmt.Errorf("unexpected type %T for field billing_type", values[i])
@@ -500,6 +509,11 @@ func (_m *UsageLog) String() string {
 	builder.WriteString("rate_multiplier=")
 	builder.WriteString(fmt.Sprintf("%v", _m.RateMultiplier))
 	builder.WriteString(", ")
+	if v := _m.AccountRateMultiplier; v != nil {
+		builder.WriteString("account_rate_multiplier=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
 	builder.WriteString("billing_type=")
 	builder.WriteString(fmt.Sprintf("%v", _m.BillingType))
 	builder.WriteString(", ")

backend/ent/usagelog/usagelog.go

@@ -54,6 +54,8 @@ const (
 	FieldActualCost = "actual_cost"
 	// FieldRateMultiplier holds the string denoting the rate_multiplier field in the database.
 	FieldRateMultiplier = "rate_multiplier"
+	// FieldAccountRateMultiplier holds the string denoting the account_rate_multiplier field in the database.
+	FieldAccountRateMultiplier = "account_rate_multiplier"
 	// FieldBillingType holds the string denoting the billing_type field in the database.
 	FieldBillingType = "billing_type"
 	// FieldStream holds the string denoting the stream field in the database.
@@ -144,6 +146,7 @@ var Columns = []string{
 	FieldTotalCost,
 	FieldActualCost,
 	FieldRateMultiplier,
+	FieldAccountRateMultiplier,
 	FieldBillingType,
 	FieldStream,
 	FieldDurationMs,
@@ -320,6 +323,11 @@ func ByRateMultiplier(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldRateMultiplier, opts...).ToFunc()
 }
 
+// ByAccountRateMultiplier orders the results by the account_rate_multiplier field.
+func ByAccountRateMultiplier(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldAccountRateMultiplier, opts...).ToFunc()
+}
+
 // ByBillingType orders the results by the billing_type field.
 func ByBillingType(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldBillingType, opts...).ToFunc()

backend/ent/usagelog/where.go

@@ -155,6 +155,11 @@ func RateMultiplier(v float64) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldRateMultiplier, v))
 }
 
+// AccountRateMultiplier applies equality check predicate on the "account_rate_multiplier" field. It's identical to AccountRateMultiplierEQ.
+func AccountRateMultiplier(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldAccountRateMultiplier, v))
+}
+
 // BillingType applies equality check predicate on the "billing_type" field. It's identical to BillingTypeEQ.
 func BillingType(v int8) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldBillingType, v))
@@ -970,6 +975,56 @@ func RateMultiplierLTE(v float64) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldLTE(FieldRateMultiplier, v))
 }
 
+// AccountRateMultiplierEQ applies the EQ predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierEQ(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierNEQ applies the NEQ predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierNEQ(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierIn applies the In predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierIn(vs ...float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldAccountRateMultiplier, vs...))
+}
+
+// AccountRateMultiplierNotIn applies the NotIn predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierNotIn(vs ...float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldAccountRateMultiplier, vs...))
+}
+
+// AccountRateMultiplierGT applies the GT predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierGT(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierGTE applies the GTE predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierGTE(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierLT applies the LT predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierLT(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierLTE applies the LTE predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierLTE(v float64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldAccountRateMultiplier, v))
+}
+
+// AccountRateMultiplierIsNil applies the IsNil predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldAccountRateMultiplier))
+}
+
+// AccountRateMultiplierNotNil applies the NotNil predicate on the "account_rate_multiplier" field.
+func AccountRateMultiplierNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldAccountRateMultiplier))
+}
+
 // BillingTypeEQ applies the EQ predicate on the "billing_type" field.
 func BillingTypeEQ(v int8) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldBillingType, v))

backend/ent/usagelog_create.go

@@ -267,6 +267,20 @@ func (_c *UsageLogCreate) SetNillableRateMultiplier(v *float64) *UsageLogCreate
 	return _c
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (_c *UsageLogCreate) SetAccountRateMultiplier(v float64) *UsageLogCreate {
+	_c.mutation.SetAccountRateMultiplier(v)
+	return _c
+}
+
+// SetNillableAccountRateMultiplier sets the "account_rate_multiplier" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableAccountRateMultiplier(v *float64) *UsageLogCreate {
+	if v != nil {
+		_c.SetAccountRateMultiplier(*v)
+	}
+	return _c
+}
+
 // SetBillingType sets the "billing_type" field.
 func (_c *UsageLogCreate) SetBillingType(v int8) *UsageLogCreate {
 	_c.mutation.SetBillingType(v)
@@ -712,6 +726,10 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldRateMultiplier, field.TypeFloat64, value)
 		_node.RateMultiplier = value
 	}
+	if value, ok := _c.mutation.AccountRateMultiplier(); ok {
+		_spec.SetField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64, value)
+		_node.AccountRateMultiplier = &value
+	}
 	if value, ok := _c.mutation.BillingType(); ok {
 		_spec.SetField(usagelog.FieldBillingType, field.TypeInt8, value)
 		_node.BillingType = value
@@ -1215,6 +1233,30 @@ func (u *UsageLogUpsert) AddRateMultiplier(v float64) *UsageLogUpsert {
 	return u
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (u *UsageLogUpsert) SetAccountRateMultiplier(v float64) *UsageLogUpsert {
+	u.Set(usagelog.FieldAccountRateMultiplier, v)
+	return u
+}
+
+// UpdateAccountRateMultiplier sets the "account_rate_multiplier" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateAccountRateMultiplier() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldAccountRateMultiplier)
+	return u
+}
+
+// AddAccountRateMultiplier adds v to the "account_rate_multiplier" field.
+func (u *UsageLogUpsert) AddAccountRateMultiplier(v float64) *UsageLogUpsert {
+	u.Add(usagelog.FieldAccountRateMultiplier, v)
+	return u
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (u *UsageLogUpsert) ClearAccountRateMultiplier() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldAccountRateMultiplier)
+	return u
+}
+
 // SetBillingType sets the "billing_type" field.
 func (u *UsageLogUpsert) SetBillingType(v int8) *UsageLogUpsert {
 	u.Set(usagelog.FieldBillingType, v)
@@ -1795,6 +1837,34 @@ func (u *UsageLogUpsertOne) UpdateRateMultiplier() *UsageLogUpsertOne {
 	})
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (u *UsageLogUpsertOne) SetAccountRateMultiplier(v float64) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetAccountRateMultiplier(v)
+	})
+}
+
+// AddAccountRateMultiplier adds v to the "account_rate_multiplier" field.
+func (u *UsageLogUpsertOne) AddAccountRateMultiplier(v float64) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddAccountRateMultiplier(v)
+	})
+}
+
+// UpdateAccountRateMultiplier sets the "account_rate_multiplier" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateAccountRateMultiplier() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateAccountRateMultiplier()
+	})
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (u *UsageLogUpsertOne) ClearAccountRateMultiplier() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearAccountRateMultiplier()
+	})
+}
+
 // SetBillingType sets the "billing_type" field.
 func (u *UsageLogUpsertOne) SetBillingType(v int8) *UsageLogUpsertOne {
 	return u.Update(func(s *UsageLogUpsert) {
@@ -2566,6 +2636,34 @@ func (u *UsageLogUpsertBulk) UpdateRateMultiplier() *UsageLogUpsertBulk {
 	})
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (u *UsageLogUpsertBulk) SetAccountRateMultiplier(v float64) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetAccountRateMultiplier(v)
+	})
+}
+
+// AddAccountRateMultiplier adds v to the "account_rate_multiplier" field.
+func (u *UsageLogUpsertBulk) AddAccountRateMultiplier(v float64) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddAccountRateMultiplier(v)
+	})
+}
+
+// UpdateAccountRateMultiplier sets the "account_rate_multiplier" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateAccountRateMultiplier() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateAccountRateMultiplier()
+	})
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (u *UsageLogUpsertBulk) ClearAccountRateMultiplier() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearAccountRateMultiplier()
+	})
+}
+
 // SetBillingType sets the "billing_type" field.
 func (u *UsageLogUpsertBulk) SetBillingType(v int8) *UsageLogUpsertBulk {
 	return u.Update(func(s *UsageLogUpsert) {

backend/ent/usagelog_update.go

@@ -415,6 +415,33 @@ func (_u *UsageLogUpdate) AddRateMultiplier(v float64) *UsageLogUpdate {
 	return _u
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (_u *UsageLogUpdate) SetAccountRateMultiplier(v float64) *UsageLogUpdate {
+	_u.mutation.ResetAccountRateMultiplier()
+	_u.mutation.SetAccountRateMultiplier(v)
+	return _u
+}
+
+// SetNillableAccountRateMultiplier sets the "account_rate_multiplier" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableAccountRateMultiplier(v *float64) *UsageLogUpdate {
+	if v != nil {
+		_u.SetAccountRateMultiplier(*v)
+	}
+	return _u
+}
+
+// AddAccountRateMultiplier adds value to the "account_rate_multiplier" field.
+func (_u *UsageLogUpdate) AddAccountRateMultiplier(v float64) *UsageLogUpdate {
+	_u.mutation.AddAccountRateMultiplier(v)
+	return _u
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (_u *UsageLogUpdate) ClearAccountRateMultiplier() *UsageLogUpdate {
+	_u.mutation.ClearAccountRateMultiplier()
+	return _u
+}
+
 // SetBillingType sets the "billing_type" field.
 func (_u *UsageLogUpdate) SetBillingType(v int8) *UsageLogUpdate {
 	_u.mutation.ResetBillingType()
@@ -807,6 +834,15 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if value, ok := _u.mutation.AddedRateMultiplier(); ok {
 		_spec.AddField(usagelog.FieldRateMultiplier, field.TypeFloat64, value)
 	}
+	if value, ok := _u.mutation.AccountRateMultiplier(); ok {
+		_spec.SetField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedAccountRateMultiplier(); ok {
+		_spec.AddField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64, value)
+	}
+	if _u.mutation.AccountRateMultiplierCleared() {
+		_spec.ClearField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64)
+	}
 	if value, ok := _u.mutation.BillingType(); ok {
 		_spec.SetField(usagelog.FieldBillingType, field.TypeInt8, value)
 	}
@@ -1406,6 +1442,33 @@ func (_u *UsageLogUpdateOne) AddRateMultiplier(v float64) *UsageLogUpdateOne {
 	return _u
 }
 
+// SetAccountRateMultiplier sets the "account_rate_multiplier" field.
+func (_u *UsageLogUpdateOne) SetAccountRateMultiplier(v float64) *UsageLogUpdateOne {
+	_u.mutation.ResetAccountRateMultiplier()
+	_u.mutation.SetAccountRateMultiplier(v)
+	return _u
+}
+
+// SetNillableAccountRateMultiplier sets the "account_rate_multiplier" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableAccountRateMultiplier(v *float64) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetAccountRateMultiplier(*v)
+	}
+	return _u
+}
+
+// AddAccountRateMultiplier adds value to the "account_rate_multiplier" field.
+func (_u *UsageLogUpdateOne) AddAccountRateMultiplier(v float64) *UsageLogUpdateOne {
+	_u.mutation.AddAccountRateMultiplier(v)
+	return _u
+}
+
+// ClearAccountRateMultiplier clears the value of the "account_rate_multiplier" field.
+func (_u *UsageLogUpdateOne) ClearAccountRateMultiplier() *UsageLogUpdateOne {
+	_u.mutation.ClearAccountRateMultiplier()
+	return _u
+}
+
 // SetBillingType sets the "billing_type" field.
 func (_u *UsageLogUpdateOne) SetBillingType(v int8) *UsageLogUpdateOne {
 	_u.mutation.ResetBillingType()
@@ -1828,6 +1891,15 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if value, ok := _u.mutation.AddedRateMultiplier(); ok {
 		_spec.AddField(usagelog.FieldRateMultiplier, field.TypeFloat64, value)
 	}
+	if value, ok := _u.mutation.AccountRateMultiplier(); ok {
+		_spec.SetField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedAccountRateMultiplier(); ok {
+		_spec.AddField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64, value)
+	}
+	if _u.mutation.AccountRateMultiplierCleared() {
+		_spec.ClearField(usagelog.FieldAccountRateMultiplier, field.TypeFloat64)
+	}
 	if value, ok := _u.mutation.BillingType(); ok {
 		_spec.SetField(usagelog.FieldBillingType, field.TypeInt8, value)
 	}

backend/internal/handler/admin/account_handler.go

@@ -84,6 +84,7 @@ type CreateAccountRequest struct {
 	ProxyID                 *int64         `json:"proxy_id"`
 	Concurrency             int            `json:"concurrency"`
 	Priority                int            `json:"priority"`
+	RateMultiplier          *float64       `json:"rate_multiplier"`
 	GroupIDs                []int64        `json:"group_ids"`
 	ExpiresAt               *int64         `json:"expires_at"`
 	AutoPauseOnExpired      *bool          `json:"auto_pause_on_expired"`
@@ -101,6 +102,7 @@ type UpdateAccountRequest struct {
 	ProxyID                 *int64         `json:"proxy_id"`
 	Concurrency             *int           `json:"concurrency"`
 	Priority                *int           `json:"priority"`
+	RateMultiplier          *float64       `json:"rate_multiplier"`
 	Status                  string         `json:"status" binding:"omitempty,oneof=active inactive"`
 	GroupIDs                *[]int64       `json:"group_ids"`
 	ExpiresAt               *int64         `json:"expires_at"`
@@ -115,6 +117,7 @@ type BulkUpdateAccountsRequest struct {
 	ProxyID                 *int64         `json:"proxy_id"`
 	Concurrency             *int           `json:"concurrency"`
 	Priority                *int           `json:"priority"`
+	RateMultiplier          *float64       `json:"rate_multiplier"`
 	Status                  string         `json:"status" binding:"omitempty,oneof=active inactive error"`
 	Schedulable             *bool          `json:"schedulable"`
 	GroupIDs                *[]int64       `json:"group_ids"`
@@ -199,6 +202,10 @@ func (h *AccountHandler) Create(c *gin.Context) {
 		response.BadRequest(c, "Invalid request: "+err.Error())
 		return
 	}
+	if req.RateMultiplier != nil && *req.RateMultiplier < 0 {
+		response.BadRequest(c, "rate_multiplier must be >= 0")
+		return
+	}
 
 	// 确定是否跳过混合渠道检查
 	skipCheck := req.ConfirmMixedChannelRisk != nil && *req.ConfirmMixedChannelRisk
@@ -213,6 +220,7 @@ func (h *AccountHandler) Create(c *gin.Context) {
 		ProxyID:               req.ProxyID,
 		Concurrency:           req.Concurrency,
 		Priority:              req.Priority,
+		RateMultiplier:        req.RateMultiplier,
 		GroupIDs:              req.GroupIDs,
 		ExpiresAt:             req.ExpiresAt,
 		AutoPauseOnExpired:    req.AutoPauseOnExpired,
@@ -258,6 +266,10 @@ func (h *AccountHandler) Update(c *gin.Context) {
 		response.BadRequest(c, "Invalid request: "+err.Error())
 		return
 	}
+	if req.RateMultiplier != nil && *req.RateMultiplier < 0 {
+		response.BadRequest(c, "rate_multiplier must be >= 0")
+		return
+	}
 
 	// 确定是否跳过混合渠道检查
 	skipCheck := req.ConfirmMixedChannelRisk != nil && *req.ConfirmMixedChannelRisk
@@ -271,6 +283,7 @@ func (h *AccountHandler) Update(c *gin.Context) {
 		ProxyID:               req.ProxyID,
 		Concurrency:           req.Concurrency, // 指针类型，nil 表示未提供
 		Priority:              req.Priority,    // 指针类型，nil 表示未提供
+		RateMultiplier:        req.RateMultiplier,
 		Status:                req.Status,
 		GroupIDs:              req.GroupIDs,
 		ExpiresAt:             req.ExpiresAt,
@@ -652,6 +665,10 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 		response.BadRequest(c, "Invalid request: "+err.Error())
 		return
 	}
+	if req.RateMultiplier != nil && *req.RateMultiplier < 0 {
+		response.BadRequest(c, "rate_multiplier must be >= 0")
+		return
+	}
 
 	// 确定是否跳过混合渠道检查
 	skipCheck := req.ConfirmMixedChannelRisk != nil && *req.ConfirmMixedChannelRisk
@@ -660,6 +677,7 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 		req.ProxyID != nil ||
 		req.Concurrency != nil ||
 		req.Priority != nil ||
+		req.RateMultiplier != nil ||
 		req.Status != "" ||
 		req.Schedulable != nil ||
 		req.GroupIDs != nil ||
@@ -677,6 +695,7 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 		ProxyID:               req.ProxyID,
 		Concurrency:           req.Concurrency,
 		Priority:              req.Priority,
+		RateMultiplier:        req.RateMultiplier,
 		Status:                req.Status,
 		Schedulable:           req.Schedulable,
 		GroupIDs:              req.GroupIDs,

backend/internal/handler/dto/mappers.go

@@ -125,6 +125,7 @@ func AccountFromServiceShallow(a *service.Account) *Account {
 		ProxyID:                 a.ProxyID,
 		Concurrency:             a.Concurrency,
 		Priority:                a.Priority,
+		RateMultiplier:          a.BillingRateMultiplier(),
 		Status:                  a.Status,
 		ErrorMessage:            a.ErrorMessage,
 		LastUsedAt:              a.LastUsedAt,
@@ -279,6 +280,7 @@ func usageLogFromServiceBase(l *service.UsageLog, account *AccountSummary, inclu
 		TotalCost:             l.TotalCost,
 		ActualCost:            l.ActualCost,
 		RateMultiplier:        l.RateMultiplier,
+		AccountRateMultiplier: l.AccountRateMultiplier,
 		BillingType:           l.BillingType,
 		Stream:                l.Stream,
 		DurationMs:            l.DurationMs,

backend/internal/handler/dto/types.go

@@ -76,6 +76,7 @@ type Account struct {
 	ProxyID            *int64         `json:"proxy_id"`
 	Concurrency        int            `json:"concurrency"`
 	Priority           int            `json:"priority"`
+	RateMultiplier     float64        `json:"rate_multiplier"`
 	Status             string         `json:"status"`
 	ErrorMessage       string         `json:"error_message"`
 	LastUsedAt         *time.Time     `json:"last_used_at"`
@@ -176,6 +177,7 @@ type UsageLog struct {
 	TotalCost             float64  `json:"total_cost"`
 	ActualCost            float64  `json:"actual_cost"`
 	RateMultiplier        float64  `json:"rate_multiplier"`
+	AccountRateMultiplier *float64 `json:"account_rate_multiplier"`
 
 	BillingType  int8 `json:"billing_type"`
 	Stream       bool `json:"stream"`

backend/internal/pkg/usagestats/account_stats.go

@@ -1,8 +1,14 @@
 package usagestats
 
 // AccountStats 账号使用统计
+//
+// cost: 账号口径费用（使用 total_cost * account_rate_multiplier）
+// standard_cost: 标准费用（使用 total_cost，不含倍率）
+// user_cost: 用户/API Key 口径费用（使用 actual_cost，受分组倍率影响）
 type AccountStats struct {
 	Requests     int64   `json:"requests"`
 	Tokens       int64   `json:"tokens"`
 	Cost         float64 `json:"cost"`
+	StandardCost float64 `json:"standard_cost"`
+	UserCost     float64 `json:"user_cost"`
 }

backend/internal/pkg/usagestats/usage_log_types.go

@@ -154,6 +154,7 @@ type UsageStats struct {
 	TotalTokens       int64    `json:"total_tokens"`
 	TotalCost         float64  `json:"total_cost"`
 	TotalActualCost   float64  `json:"total_actual_cost"`
+	TotalAccountCost  *float64 `json:"total_account_cost,omitempty"`
 	AverageDurationMs float64  `json:"average_duration_ms"`
 }
 
@@ -177,25 +178,29 @@ type AccountUsageHistory struct {
 	Label      string  `json:"label"`
 	Requests   int64   `json:"requests"`
 	Tokens     int64   `json:"tokens"`
-	Cost       float64 `json:"cost"`
-	ActualCost float64 `json:"actual_cost"`
+	Cost       float64 `json:"cost"`        // 标准计费（total_cost）
+	ActualCost float64 `json:"actual_cost"` // 账号口径费用（total_cost * account_rate_multiplier）
+	UserCost   float64 `json:"user_cost"`   // 用户口径费用（actual_cost，受分组倍率影响）
 }
 
 // AccountUsageSummary represents summary statistics for an account
 type AccountUsageSummary struct {
 	Days              int     `json:"days"`
 	ActualDaysUsed    int     `json:"actual_days_used"`
-	TotalCost         float64 `json:"total_cost"`
+	TotalCost         float64 `json:"total_cost"`      // 账号口径费用
+	TotalUserCost     float64 `json:"total_user_cost"` // 用户口径费用
 	TotalStandardCost float64 `json:"total_standard_cost"`
 	TotalRequests     int64   `json:"total_requests"`
 	TotalTokens       int64   `json:"total_tokens"`
-	AvgDailyCost      float64 `json:"avg_daily_cost"`
+	AvgDailyCost      float64 `json:"avg_daily_cost"` // 账号口径日均
+	AvgDailyUserCost  float64 `json:"avg_daily_user_cost"`
 	AvgDailyRequests  float64 `json:"avg_daily_requests"`
 	AvgDailyTokens    float64 `json:"avg_daily_tokens"`
 	AvgDurationMs     float64 `json:"avg_duration_ms"`
 	Today             *struct {
 		Date     string  `json:"date"`
 		Cost     float64 `json:"cost"`
+		UserCost float64 `json:"user_cost"`
 		Requests int64   `json:"requests"`
 		Tokens   int64   `json:"tokens"`
 	} `json:"today"`
@@ -203,6 +208,7 @@ type AccountUsageSummary struct {
 		Date     string  `json:"date"`
 		Label    string  `json:"label"`
 		Cost     float64 `json:"cost"`
+		UserCost float64 `json:"user_cost"`
 		Requests int64   `json:"requests"`
 	} `json:"highest_cost_day"`
 	HighestRequestDay *struct {
@@ -210,6 +216,7 @@ type AccountUsageSummary struct {
 		Label    string  `json:"label"`
 		Requests int64   `json:"requests"`
 		Cost     float64 `json:"cost"`
+		UserCost float64 `json:"user_cost"`
 	} `json:"highest_request_day"`
 }
 

backend/internal/repository/account_repo.go

@@ -80,6 +80,10 @@ func (r *accountRepository) Create(ctx context.Context, account *service.Account
 		SetSchedulable(account.Schedulable).
 		SetAutoPauseOnExpired(account.AutoPauseOnExpired)
 
+	if account.RateMultiplier != nil {
+		builder.SetRateMultiplier(*account.RateMultiplier)
+	}
+
 	if account.ProxyID != nil {
 		builder.SetProxyID(*account.ProxyID)
 	}
@@ -291,6 +295,10 @@ func (r *accountRepository) Update(ctx context.Context, account *service.Account
 		SetSchedulable(account.Schedulable).
 		SetAutoPauseOnExpired(account.AutoPauseOnExpired)
 
+	if account.RateMultiplier != nil {
+		builder.SetRateMultiplier(*account.RateMultiplier)
+	}
+
 	if account.ProxyID != nil {
 		builder.SetProxyID(*account.ProxyID)
 	} else {
@@ -999,6 +1007,11 @@ func (r *accountRepository) BulkUpdate(ctx context.Context, ids []int64, updates
 		args = append(args, *updates.Priority)
 		idx++
 	}
+	if updates.RateMultiplier != nil {
+		setClauses = append(setClauses, "rate_multiplier = $"+itoa(idx))
+		args = append(args, *updates.RateMultiplier)
+		idx++
+	}
 	if updates.Status != nil {
 		setClauses = append(setClauses, "status = $"+itoa(idx))
 		args = append(args, *updates.Status)
@@ -1347,6 +1360,8 @@ func accountEntityToService(m *dbent.Account) *service.Account {
 		return nil
 	}
 
+	rateMultiplier := m.RateMultiplier
+
 	return &service.Account{
 		ID:                  m.ID,
 		Name:                m.Name,
@@ -1358,6 +1373,7 @@ func accountEntityToService(m *dbent.Account) *service.Account {
 		ProxyID:             m.ProxyID,
 		Concurrency:         m.Concurrency,
 		Priority:            m.Priority,
+		RateMultiplier:      &rateMultiplier,
 		Status:              m.Status,
 		ErrorMessage:        derefString(m.ErrorMessage),
 		LastUsedAt:          m.LastUsedAt,

backend/internal/repository/usage_log_repo.go

@@ -22,7 +22,7 @@ import (
 	"github.com/lib/pq"
 )
 
-const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, billing_type, stream, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, created_at"
+const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, stream, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, created_at"
 
 type usageLogRepository struct {
 	client *dbent.Client
@@ -105,6 +105,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 			total_cost,
 			actual_cost,
 			rate_multiplier,
+			account_rate_multiplier,
 			billing_type,
 			stream,
 			duration_ms,
@@ -120,7 +121,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 			$8, $9, $10, $11,
 			$12, $13,
 			$14, $15, $16, $17, $18, $19,
-			$20, $21, $22, $23, $24, $25, $26, $27, $28, $29
+			$20, $21, $22, $23, $24, $25, $26, $27, $28, $29, $30
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 		RETURNING id, created_at
@@ -160,6 +161,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 		log.TotalCost,
 		log.ActualCost,
 		rateMultiplier,
+		log.AccountRateMultiplier,
 		log.BillingType,
 		log.Stream,
 		duration,
@@ -835,7 +837,9 @@ func (r *usageLogRepository) GetAccountTodayStats(ctx context.Context, accountID
 		SELECT
 			COUNT(*) as requests,
 			COALESCE(SUM(input_tokens + output_tokens + cache_creation_tokens + cache_read_tokens), 0) as tokens,
-			COALESCE(SUM(actual_cost), 0) as cost
+			COALESCE(SUM(total_cost * COALESCE(account_rate_multiplier, 1)), 0) as cost,
+			COALESCE(SUM(total_cost), 0) as standard_cost,
+			COALESCE(SUM(actual_cost), 0) as user_cost
 		FROM usage_logs
 		WHERE account_id = $1 AND created_at >= $2
 	`
@@ -849,6 +853,8 @@ func (r *usageLogRepository) GetAccountTodayStats(ctx context.Context, accountID
 		&stats.Requests,
 		&stats.Tokens,
 		&stats.Cost,
+		&stats.StandardCost,
+		&stats.UserCost,
 	); err != nil {
 		return nil, err
 	}
@@ -861,7 +867,9 @@ func (r *usageLogRepository) GetAccountWindowStats(ctx context.Context, accountI
 		SELECT
 			COUNT(*) as requests,
 			COALESCE(SUM(input_tokens + output_tokens + cache_creation_tokens + cache_read_tokens), 0) as tokens,
-			COALESCE(SUM(actual_cost), 0) as cost
+			COALESCE(SUM(total_cost * COALESCE(account_rate_multiplier, 1)), 0) as cost,
+			COALESCE(SUM(total_cost), 0) as standard_cost,
+			COALESCE(SUM(actual_cost), 0) as user_cost
 		FROM usage_logs
 		WHERE account_id = $1 AND created_at >= $2
 	`
@@ -875,6 +883,8 @@ func (r *usageLogRepository) GetAccountWindowStats(ctx context.Context, accountI
 		&stats.Requests,
 		&stats.Tokens,
 		&stats.Cost,
+		&stats.StandardCost,
+		&stats.UserCost,
 	); err != nil {
 		return nil, err
 	}
@@ -1454,7 +1464,13 @@ func (r *usageLogRepository) GetUsageTrendWithFilters(ctx context.Context, start
 
 // GetModelStatsWithFilters returns model statistics with optional user/api_key filters
 func (r *usageLogRepository) GetModelStatsWithFilters(ctx context.Context, startTime, endTime time.Time, userID, apiKeyID, accountID int64) (results []ModelStat, err error) {
-	query := `
+	actualCostExpr := "COALESCE(SUM(actual_cost), 0) as actual_cost"
+	// 当仅按 account_id 聚合时，实际费用使用账号倍率（total_cost * account_rate_multiplier）。
+	if accountID > 0 && userID == 0 && apiKeyID == 0 {
+		actualCostExpr = "COALESCE(SUM(total_cost * COALESCE(account_rate_multiplier, 1)), 0) as actual_cost"
+	}
+
+	query := fmt.Sprintf(`
 		SELECT
 			model,
 			COUNT(*) as requests,
@@ -1462,10 +1478,10 @@ func (r *usageLogRepository) GetModelStatsWithFilters(ctx context.Context, start
 			COALESCE(SUM(output_tokens), 0) as output_tokens,
 			COALESCE(SUM(input_tokens + output_tokens + cache_creation_tokens + cache_read_tokens), 0) as total_tokens,
 			COALESCE(SUM(total_cost), 0) as cost,
-			COALESCE(SUM(actual_cost), 0) as actual_cost
+			%s
 		FROM usage_logs
 		WHERE created_at >= $1 AND created_at < $2
-	`
+	`, actualCostExpr)
 
 	args := []any{startTime, endTime}
 	if userID > 0 {
@@ -1587,12 +1603,14 @@ func (r *usageLogRepository) GetStatsWithFilters(ctx context.Context, filters Us
 			COALESCE(SUM(cache_creation_tokens + cache_read_tokens), 0) as total_cache_tokens,
 			COALESCE(SUM(total_cost), 0) as total_cost,
 			COALESCE(SUM(actual_cost), 0) as total_actual_cost,
+			COALESCE(SUM(total_cost * COALESCE(account_rate_multiplier, 1)), 0) as total_account_cost,
 			COALESCE(AVG(duration_ms), 0) as avg_duration_ms
 		FROM usage_logs
 		%s
 	`, buildWhere(conditions))
 
 	stats := &UsageStats{}
+	var totalAccountCost float64
 	if err := scanSingleRow(
 		ctx,
 		r.sql,
@@ -1604,10 +1622,14 @@ func (r *usageLogRepository) GetStatsWithFilters(ctx context.Context, filters Us
 		&stats.TotalCacheTokens,
 		&stats.TotalCost,
 		&stats.TotalActualCost,
+		&totalAccountCost,
 		&stats.AverageDurationMs,
 	); err != nil {
 		return nil, err
 	}
+	if filters.AccountID > 0 {
+		stats.TotalAccountCost = &totalAccountCost
+	}
 	stats.TotalTokens = stats.TotalInputTokens + stats.TotalOutputTokens + stats.TotalCacheTokens
 	return stats, nil
 }
@@ -1634,7 +1656,8 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 			COUNT(*) as requests,
 			COALESCE(SUM(input_tokens + output_tokens + cache_creation_tokens + cache_read_tokens), 0) as tokens,
 			COALESCE(SUM(total_cost), 0) as cost,
-			COALESCE(SUM(actual_cost), 0) as actual_cost
+			COALESCE(SUM(total_cost * COALESCE(account_rate_multiplier, 1)), 0) as actual_cost,
+			COALESCE(SUM(actual_cost), 0) as user_cost
 		FROM usage_logs
 		WHERE account_id = $1 AND created_at >= $2 AND created_at < $3
 		GROUP BY date
@@ -1661,7 +1684,8 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 		var tokens int64
 		var cost float64
 		var actualCost float64
-		if err = rows.Scan(&date, &requests, &tokens, &cost, &actualCost); err != nil {
+		var userCost float64
+		if err = rows.Scan(&date, &requests, &tokens, &cost, &actualCost, &userCost); err != nil {
 			return nil, err
 		}
 		t, _ := time.Parse("2006-01-02", date)
@@ -1672,19 +1696,21 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 			Tokens:     tokens,
 			Cost:       cost,
 			ActualCost: actualCost,
+			UserCost:   userCost,
 		})
 	}
 	if err = rows.Err(); err != nil {
 		return nil, err
 	}
 
-	var totalActualCost, totalStandardCost float64
+	var totalAccountCost, totalUserCost, totalStandardCost float64
 	var totalRequests, totalTokens int64
 	var highestCostDay, highestRequestDay *AccountUsageHistory
 
 	for i := range history {
 		h := &history[i]
-		totalActualCost += h.ActualCost
+		totalAccountCost += h.ActualCost
+		totalUserCost += h.UserCost
 		totalStandardCost += h.Cost
 		totalRequests += h.Requests
 		totalTokens += h.Tokens
@@ -1711,11 +1737,13 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 	summary := AccountUsageSummary{
 		Days:              daysCount,
 		ActualDaysUsed:    actualDaysUsed,
-		TotalCost:         totalActualCost,
+		TotalCost:         totalAccountCost,
+		TotalUserCost:     totalUserCost,
 		TotalStandardCost: totalStandardCost,
 		TotalRequests:     totalRequests,
 		TotalTokens:       totalTokens,
-		AvgDailyCost:      totalActualCost / float64(actualDaysUsed),
+		AvgDailyCost:      totalAccountCost / float64(actualDaysUsed),
+		AvgDailyUserCost:  totalUserCost / float64(actualDaysUsed),
 		AvgDailyRequests:  float64(totalRequests) / float64(actualDaysUsed),
 		AvgDailyTokens:    float64(totalTokens) / float64(actualDaysUsed),
 		AvgDurationMs:     avgDuration,
@@ -1727,11 +1755,13 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 			summary.Today = &struct {
 				Date     string  `json:"date"`
 				Cost     float64 `json:"cost"`
+				UserCost float64 `json:"user_cost"`
 				Requests int64   `json:"requests"`
 				Tokens   int64   `json:"tokens"`
 			}{
 				Date:     history[i].Date,
 				Cost:     history[i].ActualCost,
+				UserCost: history[i].UserCost,
 				Requests: history[i].Requests,
 				Tokens:   history[i].Tokens,
 			}
@@ -1744,11 +1774,13 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 			Date     string  `json:"date"`
 			Label    string  `json:"label"`
 			Cost     float64 `json:"cost"`
+			UserCost float64 `json:"user_cost"`
 			Requests int64   `json:"requests"`
 		}{
 			Date:     highestCostDay.Date,
 			Label:    highestCostDay.Label,
 			Cost:     highestCostDay.ActualCost,
+			UserCost: highestCostDay.UserCost,
 			Requests: highestCostDay.Requests,
 		}
 	}
@@ -1759,11 +1791,13 @@ func (r *usageLogRepository) GetAccountUsageStats(ctx context.Context, accountID
 			Label    string  `json:"label"`
 			Requests int64   `json:"requests"`
 			Cost     float64 `json:"cost"`
+			UserCost float64 `json:"user_cost"`
 		}{
 			Date:     highestRequestDay.Date,
 			Label:    highestRequestDay.Label,
 			Requests: highestRequestDay.Requests,
 			Cost:     highestRequestDay.ActualCost,
+			UserCost: highestRequestDay.UserCost,
 		}
 	}
 
@@ -2015,6 +2049,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		totalCost             float64
 		actualCost            float64
 		rateMultiplier        float64
+		accountRateMultiplier sql.NullFloat64
 		billingType           int16
 		stream                bool
 		durationMs            sql.NullInt64
@@ -2048,6 +2083,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		&totalCost,
 		&actualCost,
 		&rateMultiplier,
+		&accountRateMultiplier,
 		&billingType,
 		&stream,
 		&durationMs,
@@ -2080,6 +2116,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		TotalCost:             totalCost,
 		ActualCost:            actualCost,
 		RateMultiplier:        rateMultiplier,
+		AccountRateMultiplier: nullFloat64Ptr(accountRateMultiplier),
 		BillingType:           int8(billingType),
 		Stream:                stream,
 		ImageCount:            imageCount,
@@ -2186,6 +2223,14 @@ func nullInt(v *int) sql.NullInt64 {
 	return sql.NullInt64{Int64: int64(*v), Valid: true}
 }
 
+func nullFloat64Ptr(v sql.NullFloat64) *float64 {
+	if !v.Valid {
+		return nil
+	}
+	out := v.Float64
+	return &out
+}
+
 func nullString(v *string) sql.NullString {
 	if v == nil || *v == "" {
 		return sql.NullString{}

backend/internal/repository/usage_log_repo_integration_test.go

@@ -11,6 +11,7 @@ import (
 
 	dbent "github.com/Wei-Shaw/sub2api/ent"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 	"github.com/stretchr/testify/suite"
@@ -95,6 +96,34 @@ func (s *UsageLogRepoSuite) TestGetByID_NotFound() {
 	s.Require().Error(err, "expected error for non-existent ID")
 }
 
+func (s *UsageLogRepoSuite) TestGetByID_ReturnsAccountRateMultiplier() {
+	user := mustCreateUser(s.T(), s.client, &service.User{Email: "getbyid-mult@test.com"})
+	apiKey := mustCreateApiKey(s.T(), s.client, &service.APIKey{UserID: user.ID, Key: "sk-getbyid-mult", Name: "k"})
+	account := mustCreateAccount(s.T(), s.client, &service.Account{Name: "acc-getbyid-mult"})
+
+	m := 0.5
+	log := &service.UsageLog{
+		UserID:                user.ID,
+		APIKeyID:              apiKey.ID,
+		AccountID:             account.ID,
+		RequestID:             uuid.New().String(),
+		Model:                 "claude-3",
+		InputTokens:           10,
+		OutputTokens:          20,
+		TotalCost:             1.0,
+		ActualCost:            2.0,
+		AccountRateMultiplier: &m,
+		CreatedAt:             timezone.Today().Add(2 * time.Hour),
+	}
+	_, err := s.repo.Create(s.ctx, log)
+	s.Require().NoError(err)
+
+	got, err := s.repo.GetByID(s.ctx, log.ID)
+	s.Require().NoError(err)
+	s.Require().NotNil(got.AccountRateMultiplier)
+	s.Require().InEpsilon(0.5, *got.AccountRateMultiplier, 0.0001)
+}
+
 // --- Delete ---
 
 func (s *UsageLogRepoSuite) TestDelete() {
@@ -403,12 +432,49 @@ func (s *UsageLogRepoSuite) TestGetAccountTodayStats() {
 	apiKey := mustCreateApiKey(s.T(), s.client, &service.APIKey{UserID: user.ID, Key: "sk-acctoday", Name: "k"})
 	account := mustCreateAccount(s.T(), s.client, &service.Account{Name: "acc-today"})
 
-	s.createUsageLog(user, apiKey, account, 10, 20, 0.5, time.Now())
+	createdAt := timezone.Today().Add(1 * time.Hour)
+
+	m1 := 1.5
+	m2 := 0.0
+	_, err := s.repo.Create(s.ctx, &service.UsageLog{
+		UserID:                user.ID,
+		APIKeyID:              apiKey.ID,
+		AccountID:             account.ID,
+		RequestID:             uuid.New().String(),
+		Model:                 "claude-3",
+		InputTokens:           10,
+		OutputTokens:          20,
+		TotalCost:             1.0,
+		ActualCost:            2.0,
+		AccountRateMultiplier: &m1,
+		CreatedAt:             createdAt,
+	})
+	s.Require().NoError(err)
+	_, err = s.repo.Create(s.ctx, &service.UsageLog{
+		UserID:                user.ID,
+		APIKeyID:              apiKey.ID,
+		AccountID:             account.ID,
+		RequestID:             uuid.New().String(),
+		Model:                 "claude-3",
+		InputTokens:           5,
+		OutputTokens:          5,
+		TotalCost:             0.5,
+		ActualCost:            1.0,
+		AccountRateMultiplier: &m2,
+		CreatedAt:             createdAt,
+	})
+	s.Require().NoError(err)
 
 	stats, err := s.repo.GetAccountTodayStats(s.ctx, account.ID)
 	s.Require().NoError(err, "GetAccountTodayStats")
-	s.Require().Equal(int64(1), stats.Requests)
-	s.Require().Equal(int64(30), stats.Tokens)
+	s.Require().Equal(int64(2), stats.Requests)
+	s.Require().Equal(int64(40), stats.Tokens)
+	// account cost = SUM(total_cost * account_rate_multiplier)
+	s.Require().InEpsilon(1.5, stats.Cost, 0.0001)
+	// standard cost = SUM(total_cost)
+	s.Require().InEpsilon(1.5, stats.StandardCost, 0.0001)
+	// user cost = SUM(actual_cost)
+	s.Require().InEpsilon(3.0, stats.UserCost, 0.0001)
 }
 
 func (s *UsageLogRepoSuite) TestDashboardAggregationConsistency() {

backend/internal/server/api_contract_test.go

@@ -241,6 +241,7 @@ func TestAPIContracts(t *testing.T) {
 							"total_cost": 0.5,
 						"actual_cost": 0.5,
 						"rate_multiplier": 1,
+						"account_rate_multiplier": null,
 						"billing_type": 0,
 							"stream": true,
 							"duration_ms": 100,

backend/internal/service/account.go

@@ -19,6 +19,9 @@ type Account struct {
 	ProxyID     *int64
 	Concurrency int
 	Priority    int
+	// RateMultiplier 账号计费倍率（>=0，允许 0 表示该账号计费为 0）。
+	// 使用指针用于兼容旧版本调度缓存（Redis）中缺字段的情况：nil 表示按 1.0 处理。
+	RateMultiplier     *float64
 	Status             string
 	ErrorMessage       string
 	LastUsedAt         *time.Time
@@ -57,6 +60,20 @@ func (a *Account) IsActive() bool {
 	return a.Status == StatusActive
 }
 
+// BillingRateMultiplier 返回账号计费倍率。
+// - nil 表示未配置/旧缓存缺字段，按 1.0 处理
+// - 允许 0，表示该账号计费为 0
+// - 负数属于非法数据，出于安全考虑按 1.0 处理
+func (a *Account) BillingRateMultiplier() float64 {
+	if a == nil || a.RateMultiplier == nil {
+		return 1.0
+	}
+	if *a.RateMultiplier < 0 {
+		return 1.0
+	}
+	return *a.RateMultiplier
+}
+
 func (a *Account) IsSchedulable() bool {
 	if !a.IsActive() || !a.Schedulable {
 		return false

backend/internal/service/account_billing_rate_multiplier_test.go

@@ -0,0 +1,27 @@
+package service
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAccount_BillingRateMultiplier_DefaultsToOneWhenNil(t *testing.T) {
+	var a Account
+	require.NoError(t, json.Unmarshal([]byte(`{"id":1,"name":"acc","status":"active"}`), &a))
+	require.Nil(t, a.RateMultiplier)
+	require.Equal(t, 1.0, a.BillingRateMultiplier())
+}
+
+func TestAccount_BillingRateMultiplier_AllowsZero(t *testing.T) {
+	v := 0.0
+	a := Account{RateMultiplier: &v}
+	require.Equal(t, 0.0, a.BillingRateMultiplier())
+}
+
+func TestAccount_BillingRateMultiplier_NegativeFallsBackToOne(t *testing.T) {
+	v := -1.0
+	a := Account{RateMultiplier: &v}
+	require.Equal(t, 1.0, a.BillingRateMultiplier())
+}

backend/internal/service/account_service.go

@@ -67,6 +67,7 @@ type AccountBulkUpdate struct {
 	ProxyID        *int64
 	Concurrency    *int
 	Priority       *int
+	RateMultiplier *float64
 	Status         *string
 	Schedulable    *bool
 	Credentials    map[string]any

backend/internal/service/account_usage_service.go

@@ -96,10 +96,16 @@ func NewUsageCache() *UsageCache {
 }
 
 // WindowStats 窗口期统计
+//
+// cost: 账号口径费用（total_cost * account_rate_multiplier）
+// standard_cost: 标准费用（total_cost，不含倍率）
+// user_cost: 用户/API Key 口径费用（actual_cost，受分组倍率影响）
 type WindowStats struct {
 	Requests     int64   `json:"requests"`
 	Tokens       int64   `json:"tokens"`
 	Cost         float64 `json:"cost"`
+	StandardCost float64 `json:"standard_cost"`
+	UserCost     float64 `json:"user_cost"`
 }
 
 // UsageProgress 使用量进度
@@ -380,6 +386,8 @@ func (s *AccountUsageService) addWindowStats(ctx context.Context, account *Accou
 			Requests:     stats.Requests,
 			Tokens:       stats.Tokens,
 			Cost:         stats.Cost,
+			StandardCost: stats.StandardCost,
+			UserCost:     stats.UserCost,
 		}
 
 		// 缓存窗口统计（1 分钟）
@@ -406,6 +414,8 @@ func (s *AccountUsageService) GetTodayStats(ctx context.Context, accountID int64
 		Requests:     stats.Requests,
 		Tokens:       stats.Tokens,
 		Cost:         stats.Cost,
+		StandardCost: stats.StandardCost,
+		UserCost:     stats.UserCost,
 	}, nil
 }
 

backend/internal/service/admin_service.go

@@ -136,6 +136,7 @@ type CreateAccountInput struct {
 	ProxyID            *int64
 	Concurrency        int
 	Priority           int
+	RateMultiplier     *float64 // 账号计费倍率（>=0，允许 0）
 	GroupIDs           []int64
 	ExpiresAt          *int64
 	AutoPauseOnExpired *bool
@@ -153,6 +154,7 @@ type UpdateAccountInput struct {
 	ProxyID               *int64
 	Concurrency           *int     // 使用指针区分"未提供"和"设置为0"
 	Priority              *int     // 使用指针区分"未提供"和"设置为0"
+	RateMultiplier        *float64 // 账号计费倍率（>=0，允许 0）
 	Status                string
 	GroupIDs              *[]int64
 	ExpiresAt             *int64
@@ -167,6 +169,7 @@ type BulkUpdateAccountsInput struct {
 	ProxyID        *int64
 	Concurrency    *int
 	Priority       *int
+	RateMultiplier *float64 // 账号计费倍率（>=0，允许 0）
 	Status         string
 	Schedulable    *bool
 	GroupIDs       *[]int64
@@ -817,6 +820,12 @@ func (s *adminServiceImpl) CreateAccount(ctx context.Context, input *CreateAccou
 	} else {
 		account.AutoPauseOnExpired = true
 	}
+	if input.RateMultiplier != nil {
+		if *input.RateMultiplier < 0 {
+			return nil, errors.New("rate_multiplier must be >= 0")
+		}
+		account.RateMultiplier = input.RateMultiplier
+	}
 	if err := s.accountRepo.Create(ctx, account); err != nil {
 		return nil, err
 	}
@@ -869,6 +878,12 @@ func (s *adminServiceImpl) UpdateAccount(ctx context.Context, id int64, input *U
 	if input.Priority != nil {
 		account.Priority = *input.Priority
 	}
+	if input.RateMultiplier != nil {
+		if *input.RateMultiplier < 0 {
+			return nil, errors.New("rate_multiplier must be >= 0")
+		}
+		account.RateMultiplier = input.RateMultiplier
+	}
 	if input.Status != "" {
 		account.Status = input.Status
 	}
@@ -942,6 +957,12 @@ func (s *adminServiceImpl) BulkUpdateAccounts(ctx context.Context, input *BulkUp
 		}
 	}
 
+	if input.RateMultiplier != nil {
+		if *input.RateMultiplier < 0 {
+			return nil, errors.New("rate_multiplier must be >= 0")
+		}
+	}
+
 	// Prepare bulk updates for columns and JSONB fields.
 	repoUpdates := AccountBulkUpdate{
 		Credentials: input.Credentials,
@@ -959,6 +980,9 @@ func (s *adminServiceImpl) BulkUpdateAccounts(ctx context.Context, input *BulkUp
 	if input.Priority != nil {
 		repoUpdates.Priority = input.Priority
 	}
+	if input.RateMultiplier != nil {
+		repoUpdates.RateMultiplier = input.RateMultiplier
+	}
 	if input.Status != "" {
 		repoUpdates.Status = &input.Status
 	}

backend/internal/service/gateway_service.go

@@ -2618,6 +2618,7 @@ func (s *GatewayService) RecordUsage(ctx context.Context, input *RecordUsageInpu
 	if result.ImageSize != "" {
 		imageSize = &result.ImageSize
 	}
+	accountRateMultiplier := account.BillingRateMultiplier()
 	usageLog := &UsageLog{
 		UserID:                user.ID,
 		APIKeyID:              apiKey.ID,
@@ -2635,6 +2636,7 @@ func (s *GatewayService) RecordUsage(ctx context.Context, input *RecordUsageInpu
 		TotalCost:             cost.TotalCost,
 		ActualCost:            cost.ActualCost,
 		RateMultiplier:        multiplier,
+		AccountRateMultiplier: &accountRateMultiplier,
 		BillingType:           billingType,
 		Stream:                result.Stream,
 		DurationMs:            &durationMs,

backend/internal/service/openai_gateway_service.go

@@ -1432,6 +1432,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 
 	// Create usage log
 	durationMs := int(result.Duration.Milliseconds())
+	accountRateMultiplier := account.BillingRateMultiplier()
 	usageLog := &UsageLog{
 		UserID:                user.ID,
 		APIKeyID:              apiKey.ID,
@@ -1449,6 +1450,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		TotalCost:             cost.TotalCost,
 		ActualCost:            cost.ActualCost,
 		RateMultiplier:        multiplier,
+		AccountRateMultiplier: &accountRateMultiplier,
 		BillingType:           billingType,
 		Stream:                result.Stream,
 		DurationMs:            &durationMs,

backend/internal/service/usage_log.go

@@ -33,6 +33,8 @@ type UsageLog struct {
 	TotalCost         float64
 	ActualCost        float64
 	RateMultiplier    float64
+	// AccountRateMultiplier 账号计费倍率快照（nil 表示历史数据，按 1.0 处理）
+	AccountRateMultiplier *float64
 
 	BillingType  int8
 	Stream       bool

backend/migrations/037_add_account_rate_multiplier.sql

@@ -0,0 +1,14 @@
+-- Add account billing rate multiplier and per-usage snapshot.
+--
+-- accounts.rate_multiplier: 账号计费倍率（>=0，允许 0 表示该账号计费为 0）。
+-- usage_logs.account_rate_multiplier: 每条 usage log 的账号倍率快照，用于实现
+--   “倍率调整仅影响之后请求”，并支持同一天分段倍率加权统计。
+--
+-- 注意：usage_logs.account_rate_multiplier 不做回填、不设置 NOT NULL。
+-- 老数据为 NULL 时，统计口径按 1.0 处理（COALESCE）。
+
+ALTER TABLE IF EXISTS accounts
+  ADD COLUMN IF NOT EXISTS rate_multiplier DECIMAL(10,4) NOT NULL DEFAULT 1.0;
+
+ALTER TABLE IF EXISTS usage_logs
+  ADD COLUMN IF NOT EXISTS account_rate_multiplier DECIMAL(10,4);

frontend/src/api/admin/usage.ts

@@ -16,6 +16,7 @@ export interface AdminUsageStatsResponse {
   total_tokens: number
   total_cost: number
   total_actual_cost: number
+  total_account_cost?: number
   average_duration_ms: number
 }
 

frontend/src/components/account/AccountStatsModal.vue

@@ -73,11 +73,12 @@
             </p>
             <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
               {{ t('admin.accounts.stats.accumulatedCost') }}
-              <span class="text-gray-400 dark:text-gray-500"
-                >({{ t('admin.accounts.stats.standardCost') }}: ${{
+              <span class="text-gray-400 dark:text-gray-500">
+                ({{ t('usage.userBilled') }}: ${{ formatCost(stats.summary.total_user_cost) }} ·
+                {{ t('admin.accounts.stats.standardCost') }}: ${{
                   formatCost(stats.summary.total_standard_cost)
-                }})</span
-              >
+                }})
+              </span>
             </p>
           </div>
 
@@ -127,6 +128,9 @@
                   days: stats.summary.actual_days_used
                 })
               }}
+              <span class="text-gray-400 dark:text-gray-500">
+                ({{ t('usage.userBilled') }}: ${{ formatCost(stats.summary.avg_daily_user_cost) }})
+              </span>
             </p>
           </div>
 
@@ -189,13 +193,17 @@
             </div>
             <div class="space-y-2">
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-gray-900 dark:text-white"
                   >${{ formatCost(stats.summary.today?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.today?.user_cost || 0) }}</span
+                >
+              </div>
               <div class="flex items-center justify-between">
                 <span class="text-xs text-gray-500 dark:text-gray-400">{{
                   t('admin.accounts.stats.requests')
@@ -240,13 +248,17 @@
                 }}</span>
               </div>
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-orange-600 dark:text-orange-400"
                   >${{ formatCost(stats.summary.highest_cost_day?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.highest_cost_day?.user_cost || 0) }}</span
+                >
+              </div>
               <div class="flex items-center justify-between">
                 <span class="text-xs text-gray-500 dark:text-gray-400">{{
                   t('admin.accounts.stats.requests')
@@ -291,13 +303,17 @@
                 }}</span>
               </div>
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-gray-900 dark:text-white"
                   >${{ formatCost(stats.summary.highest_request_day?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.highest_request_day?.user_cost || 0) }}</span
+                >
+              </div>
             </div>
           </div>
         </div>
@@ -397,13 +413,17 @@
                 }}</span>
               </div>
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.todayCost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-gray-900 dark:text-white"
                   >${{ formatCost(stats.summary.today?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.today?.user_cost || 0) }}</span
+                >
+              </div>
             </div>
           </div>
         </div>
@@ -517,14 +537,24 @@ const trendChartData = computed(() => {
     labels: stats.value.history.map((h) => h.label),
     datasets: [
       {
-        label: t('admin.accounts.stats.cost') + ' (USD)',
-        data: stats.value.history.map((h) => h.cost),
+        label: t('usage.accountBilled') + ' (USD)',
+        data: stats.value.history.map((h) => h.actual_cost),
         borderColor: '#3b82f6',
         backgroundColor: 'rgba(59, 130, 246, 0.1)',
         fill: true,
         tension: 0.3,
         yAxisID: 'y'
       },
+      {
+        label: t('usage.userBilled') + ' (USD)',
+        data: stats.value.history.map((h) => h.user_cost),
+        borderColor: '#10b981',
+        backgroundColor: 'rgba(16, 185, 129, 0.08)',
+        fill: false,
+        tension: 0.3,
+        borderDash: [5, 5],
+        yAxisID: 'y'
+      },
       {
         label: t('admin.accounts.stats.requests'),
         data: stats.value.history.map((h) => h.requests),
@@ -602,7 +632,7 @@ const lineChartOptions = computed(() => ({
       },
       title: {
         display: true,
-        text: t('admin.accounts.stats.cost') + ' (USD)',
+        text: t('usage.accountBilled') + ' (USD)',
         color: '#3b82f6',
         font: {
           size: 11

frontend/src/components/account/AccountTodayStatsCell.vue

@@ -32,15 +32,20 @@
           formatTokens(stats.tokens)
         }}</span>
       </div>
-      <!-- Cost -->
+      <!-- Cost (Account) -->
       <div class="flex items-center gap-1">
-        <span class="text-gray-500 dark:text-gray-400"
-          >{{ t('admin.accounts.stats.cost') }}:</span
-        >
+        <span class="text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}:</span>
         <span class="font-medium text-emerald-600 dark:text-emerald-400">{{
           formatCurrency(stats.cost)
         }}</span>
       </div>
+      <!-- Cost (User/API Key) -->
+      <div v-if="stats.user_cost != null" class="flex items-center gap-1">
+        <span class="text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}:</span>
+        <span class="font-medium text-gray-700 dark:text-gray-300">{{
+          formatCurrency(stats.user_cost)
+        }}</span>
+      </div>
     </div>
 
     <!-- No data -->

frontend/src/components/account/BulkEditAccountModal.vue

@@ -459,7 +459,7 @@
       </div>
 
       <!-- Concurrency & Priority -->
-      <div class="grid grid-cols-2 gap-4 border-t border-gray-200 pt-4 dark:border-dark-600">
+      <div class="grid grid-cols-2 gap-4 border-t border-gray-200 pt-4 dark:border-dark-600 lg:grid-cols-3">
         <div>
           <div class="mb-3 flex items-center justify-between">
             <label
@@ -516,6 +516,36 @@
             aria-labelledby="bulk-edit-priority-label"
           />
         </div>
+        <div>
+          <div class="mb-3 flex items-center justify-between">
+            <label
+              id="bulk-edit-rate-multiplier-label"
+              class="input-label mb-0"
+              for="bulk-edit-rate-multiplier-enabled"
+            >
+              {{ t('admin.accounts.billingRateMultiplier') }}
+            </label>
+            <input
+              v-model="enableRateMultiplier"
+              id="bulk-edit-rate-multiplier-enabled"
+              type="checkbox"
+              aria-controls="bulk-edit-rate-multiplier"
+              class="rounded border-gray-300 text-primary-600 focus:ring-primary-500"
+            />
+          </div>
+          <input
+            v-model.number="rateMultiplier"
+            id="bulk-edit-rate-multiplier"
+            type="number"
+            min="0"
+            step="0.01"
+            :disabled="!enableRateMultiplier"
+            class="input"
+            :class="!enableRateMultiplier && 'cursor-not-allowed opacity-50'"
+            aria-labelledby="bulk-edit-rate-multiplier-label"
+          />
+          <p class="input-hint">{{ t('admin.accounts.billingRateMultiplierHint') }}</p>
+        </div>
       </div>
 
       <!-- Status -->
@@ -655,6 +685,7 @@ const enableInterceptWarmup = ref(false)
 const enableProxy = ref(false)
 const enableConcurrency = ref(false)
 const enablePriority = ref(false)
+const enableRateMultiplier = ref(false)
 const enableStatus = ref(false)
 const enableGroups = ref(false)
 
@@ -670,6 +701,7 @@ const interceptWarmupRequests = ref(false)
 const proxyId = ref<number | null>(null)
 const concurrency = ref(1)
 const priority = ref(1)
+const rateMultiplier = ref(1)
 const status = ref<'active' | 'inactive'>('active')
 const groupIds = ref<number[]>([])
 
@@ -863,6 +895,10 @@ const buildUpdatePayload = (): Record<string, unknown> | null => {
     updates.priority = priority.value
   }
 
+  if (enableRateMultiplier.value) {
+    updates.rate_multiplier = rateMultiplier.value
+  }
+
   if (enableStatus.value) {
     updates.status = status.value
   }
@@ -923,6 +959,7 @@ const handleSubmit = async () => {
     enableProxy.value ||
     enableConcurrency.value ||
     enablePriority.value ||
+    enableRateMultiplier.value ||
     enableStatus.value ||
     enableGroups.value
 
@@ -977,6 +1014,7 @@ watch(
       enableProxy.value = false
       enableConcurrency.value = false
       enablePriority.value = false
+      enableRateMultiplier.value = false
       enableStatus.value = false
       enableGroups.value = false
 
@@ -991,6 +1029,7 @@ watch(
       proxyId.value = null
       concurrency.value = 1
       priority.value = 1
+      rateMultiplier.value = 1
       status.value = 'active'
       groupIds.value = []
     }

frontend/src/components/account/CreateAccountModal.vue

@@ -1196,7 +1196,7 @@
         <ProxySelector v-model="form.proxy_id" :proxies="proxies" />
       </div>
 
-      <div class="grid grid-cols-2 gap-4">
+      <div class="grid grid-cols-2 gap-4 lg:grid-cols-3">
         <div>
           <label class="input-label">{{ t('admin.accounts.concurrency') }}</label>
           <input v-model.number="form.concurrency" type="number" min="1" class="input" />
@@ -1212,6 +1212,11 @@
           />
           <p class="input-hint">{{ t('admin.accounts.priorityHint') }}</p>
         </div>
+        <div>
+          <label class="input-label">{{ t('admin.accounts.billingRateMultiplier') }}</label>
+          <input v-model.number="form.rate_multiplier" type="number" min="0" step="0.01" class="input" />
+          <p class="input-hint">{{ t('admin.accounts.billingRateMultiplierHint') }}</p>
+        </div>
       </div>
       <div class="border-t border-gray-200 pt-4 dark:border-dark-600">
         <label class="input-label">{{ t('admin.accounts.expiresAt') }}</label>
@@ -1832,6 +1837,7 @@ const form = reactive({
   proxy_id: null as number | null,
   concurrency: 10,
   priority: 1,
+  rate_multiplier: 1,
   group_ids: [] as number[],
   expires_at: null as number | null
 })
@@ -2119,6 +2125,7 @@ const resetForm = () => {
   form.proxy_id = null
   form.concurrency = 10
   form.priority = 1
+  form.rate_multiplier = 1
   form.group_ids = []
   form.expires_at = null
   accountCategory.value = 'oauth-based'
@@ -2272,6 +2279,7 @@ const createAccountAndFinish = async (
     proxy_id: form.proxy_id,
     concurrency: form.concurrency,
     priority: form.priority,
+    rate_multiplier: form.rate_multiplier,
     group_ids: form.group_ids,
     expires_at: form.expires_at,
     auto_pause_on_expired: autoPauseOnExpired.value
@@ -2490,6 +2498,7 @@ const handleCookieAuth = async (sessionKey: string) => {
           proxy_id: form.proxy_id,
           concurrency: form.concurrency,
           priority: form.priority,
+          rate_multiplier: form.rate_multiplier,
           group_ids: form.group_ids,
           expires_at: form.expires_at,
           auto_pause_on_expired: autoPauseOnExpired.value

frontend/src/components/account/EditAccountModal.vue

@@ -549,7 +549,7 @@
         <ProxySelector v-model="form.proxy_id" :proxies="proxies" />
       </div>
 
-      <div class="grid grid-cols-2 gap-4">
+      <div class="grid grid-cols-2 gap-4 lg:grid-cols-3">
         <div>
           <label class="input-label">{{ t('admin.accounts.concurrency') }}</label>
           <input v-model.number="form.concurrency" type="number" min="1" class="input" />
@@ -564,6 +564,11 @@
             data-tour="account-form-priority"
           />
         </div>
+        <div>
+          <label class="input-label">{{ t('admin.accounts.billingRateMultiplier') }}</label>
+          <input v-model.number="form.rate_multiplier" type="number" min="0" step="0.01" class="input" />
+          <p class="input-hint">{{ t('admin.accounts.billingRateMultiplierHint') }}</p>
+        </div>
       </div>
       <div class="border-t border-gray-200 pt-4 dark:border-dark-600">
         <label class="input-label">{{ t('admin.accounts.expiresAt') }}</label>
@@ -807,6 +812,7 @@ const form = reactive({
   proxy_id: null as number | null,
   concurrency: 1,
   priority: 1,
+  rate_multiplier: 1,
   status: 'active' as 'active' | 'inactive',
   group_ids: [] as number[],
   expires_at: null as number | null
@@ -834,6 +840,7 @@ watch(
       form.proxy_id = newAccount.proxy_id
       form.concurrency = newAccount.concurrency
       form.priority = newAccount.priority
+      form.rate_multiplier = newAccount.rate_multiplier ?? 1
       form.status = newAccount.status as 'active' | 'inactive'
       form.group_ids = newAccount.group_ids || []
       form.expires_at = newAccount.expires_at ?? null

frontend/src/components/account/UsageProgressBar.vue

@@ -15,7 +15,13 @@
         <span class="rounded bg-gray-100 px-1.5 py-0.5 dark:bg-gray-800">
           {{ formatTokens }}
         </span>
-        <span class="rounded bg-gray-100 px-1.5 py-0.5 dark:bg-gray-800"> ${{ formatCost }} </span>
+        <span class="rounded bg-gray-100 px-1.5 py-0.5 dark:bg-gray-800"> A ${{ formatAccountCost }} </span>
+        <span
+          v-if="windowStats?.user_cost != null"
+          class="rounded bg-gray-100 px-1.5 py-0.5 dark:bg-gray-800"
+        >
+          U ${{ formatUserCost }}
+        </span>
       </div>
     </div>
 
@@ -149,8 +155,13 @@ const formatTokens = computed(() => {
   return t.toString()
 })
 
-const formatCost = computed(() => {
+const formatAccountCost = computed(() => {
   if (!props.windowStats) return '0.00'
   return props.windowStats.cost.toFixed(2)
 })
+
+const formatUserCost = computed(() => {
+  if (!props.windowStats || props.windowStats.user_cost == null) return '0.00'
+  return props.windowStats.user_cost.toFixed(2)
+})
 </script>

frontend/src/components/admin/account/AccountStatsModal.vue

@@ -61,11 +61,12 @@
             </p>
             <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
               {{ t('admin.accounts.stats.accumulatedCost') }}
-              <span class="text-gray-400 dark:text-gray-500"
-                >({{ t('admin.accounts.stats.standardCost') }}: ${{
+              <span class="text-gray-400 dark:text-gray-500">
+                ({{ t('usage.userBilled') }}: ${{ formatCost(stats.summary.total_user_cost) }} ·
+                {{ t('admin.accounts.stats.standardCost') }}: ${{
                   formatCost(stats.summary.total_standard_cost)
-                }})</span
-              >
+                }})
+              </span>
             </p>
           </div>
 
@@ -114,6 +115,9 @@
                   days: stats.summary.actual_days_used
                 })
               }}
+              <span class="text-gray-400 dark:text-gray-500">
+                ({{ t('usage.userBilled') }}: ${{ formatCost(stats.summary.avg_daily_user_cost) }})
+              </span>
             </p>
           </div>
 
@@ -164,13 +168,17 @@
             </div>
             <div class="space-y-2">
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-gray-900 dark:text-white"
                   >${{ formatCost(stats.summary.today?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.today?.user_cost || 0) }}</span
+                >
+              </div>
               <div class="flex items-center justify-between">
                 <span class="text-xs text-gray-500 dark:text-gray-400">{{
                   t('admin.accounts.stats.requests')
@@ -210,13 +218,17 @@
                 }}</span>
               </div>
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-orange-600 dark:text-orange-400"
                   >${{ formatCost(stats.summary.highest_cost_day?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.highest_cost_day?.user_cost || 0) }}</span
+                >
+              </div>
               <div class="flex items-center justify-between">
                 <span class="text-xs text-gray-500 dark:text-gray-400">{{
                   t('admin.accounts.stats.requests')
@@ -260,13 +272,17 @@
                 }}</span>
               </div>
               <div class="flex items-center justify-between">
-                <span class="text-xs text-gray-500 dark:text-gray-400">{{
-                  t('admin.accounts.stats.cost')
-                }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.accountBilled') }}</span>
                 <span class="text-sm font-semibold text-gray-900 dark:text-white"
                   >${{ formatCost(stats.summary.highest_request_day?.cost || 0) }}</span
                 >
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('usage.userBilled') }}</span>
+                <span class="text-sm font-semibold text-gray-900 dark:text-white"
+                  >${{ formatCost(stats.summary.highest_request_day?.user_cost || 0) }}</span
+                >
+              </div>
             </div>
           </div>
         </div>
@@ -485,14 +501,24 @@ const trendChartData = computed(() => {
     labels: stats.value.history.map((h) => h.label),
     datasets: [
       {
-        label: t('admin.accounts.stats.cost') + ' (USD)',
-        data: stats.value.history.map((h) => h.cost),
+        label: t('usage.accountBilled') + ' (USD)',
+        data: stats.value.history.map((h) => h.actual_cost),
         borderColor: '#3b82f6',
         backgroundColor: 'rgba(59, 130, 246, 0.1)',
         fill: true,
         tension: 0.3,
         yAxisID: 'y'
       },
+      {
+        label: t('usage.userBilled') + ' (USD)',
+        data: stats.value.history.map((h) => h.user_cost),
+        borderColor: '#10b981',
+        backgroundColor: 'rgba(16, 185, 129, 0.08)',
+        fill: false,
+        tension: 0.3,
+        borderDash: [5, 5],
+        yAxisID: 'y'
+      },
       {
         label: t('admin.accounts.stats.requests'),
         data: stats.value.history.map((h) => h.requests),
@@ -570,7 +596,7 @@ const lineChartOptions = computed(() => ({
       },
       title: {
         display: true,
-        text: t('admin.accounts.stats.cost') + ' (USD)',
+        text: t('usage.accountBilled') + ' (USD)',
         color: '#3b82f6',
         font: {
           size: 11

frontend/src/components/admin/usage/UsageStatsCards.vue

@@ -27,9 +27,18 @@
       </div>
       <div class="min-w-0 flex-1">
         <p class="text-xs font-medium text-gray-500">{{ t('usage.totalCost') }}</p>
-        <p class="text-xl font-bold text-green-600">${{ (stats?.total_actual_cost || 0).toFixed(4) }}</p>
-        <p class="text-xs text-gray-400">
-          {{ t('usage.standardCost') }}: <span class="line-through">${{ (stats?.total_cost || 0).toFixed(4) }}</span>
+        <p class="text-xl font-bold text-green-600">
+          ${{ ((stats?.total_account_cost ?? stats?.total_actual_cost) || 0).toFixed(4) }}
+        </p>
+        <p class="text-xs text-gray-400" v-if="stats?.total_account_cost != null">
+          {{ t('usage.userBilled') }}:
+          <span class="text-gray-300">${{ (stats?.total_actual_cost || 0).toFixed(4) }}</span>
+          · {{ t('usage.standardCost') }}:
+          <span class="text-gray-300">${{ (stats?.total_cost || 0).toFixed(4) }}</span>
+        </p>
+        <p class="text-xs text-gray-400" v-else>
+          {{ t('usage.standardCost') }}:
+          <span class="line-through">${{ (stats?.total_cost || 0).toFixed(4) }}</span>
         </p>
       </div>
     </div>

frontend/src/components/admin/usage/UsageTable.vue

@@ -81,7 +81,8 @@
         </template>
 
         <template #cell-cost="{ row }">
-          <div class="flex items-center gap-1.5 text-sm">
+          <div class="text-sm">
+            <div class="flex items-center gap-1.5">
               <span class="font-medium text-green-600 dark:text-green-400">${{ row.actual_cost?.toFixed(6) || '0.000000' }}</span>
               <!-- Cost Detail Tooltip -->
               <div
@@ -94,6 +95,10 @@
                 </div>
               </div>
             </div>
+            <div v-if="row.account_rate_multiplier != null" class="mt-0.5 text-[11px] text-gray-400">
+              A ${{ (row.total_cost * row.account_rate_multiplier).toFixed(6) }}
+            </div>
+          </div>
         </template>
 
         <template #cell-first_token="{ row }">
@@ -202,14 +207,24 @@
             <span class="text-gray-400">{{ t('usage.rate') }}</span>
             <span class="font-semibold text-blue-400">{{ (tooltipData?.rate_multiplier || 1).toFixed(2) }}x</span>
           </div>
+          <div class="flex items-center justify-between gap-6">
+            <span class="text-gray-400">{{ t('usage.accountMultiplier') }}</span>
+            <span class="font-semibold text-blue-400">{{ (tooltipData?.account_rate_multiplier ?? 1).toFixed(2) }}x</span>
+          </div>
           <div class="flex items-center justify-between gap-6">
             <span class="text-gray-400">{{ t('usage.original') }}</span>
             <span class="font-medium text-white">${{ tooltipData?.total_cost?.toFixed(6) || '0.000000' }}</span>
           </div>
-          <div class="flex items-center justify-between gap-6 border-t border-gray-700 pt-1.5">
-            <span class="text-gray-400">{{ t('usage.billed') }}</span>
+          <div class="flex items-center justify-between gap-6">
+            <span class="text-gray-400">{{ t('usage.userBilled') }}</span>
             <span class="font-semibold text-green-400">${{ tooltipData?.actual_cost?.toFixed(6) || '0.000000' }}</span>
           </div>
+          <div class="flex items-center justify-between gap-6 border-t border-gray-700 pt-1.5">
+            <span class="text-gray-400">{{ t('usage.accountBilled') }}</span>
+            <span class="font-semibold text-green-400">
+              ${{ (((tooltipData?.total_cost || 0) * (tooltipData?.account_rate_multiplier ?? 1)) || 0).toFixed(6) }}
+            </span>
+          </div>
         </div>
         <div class="absolute right-full top-1/2 h-0 w-0 -translate-y-1/2 border-b-[6px] border-r-[6px] border-t-[6px] border-b-transparent border-r-gray-900 border-t-transparent dark:border-r-gray-800"></div>
       </div>

frontend/src/i18n/locales/en.ts

@@ -429,6 +429,9 @@ export default {
     totalCost: 'Total Cost',
     standardCost: 'Standard',
     actualCost: 'Actual',
+    userBilled: 'User billed',
+    accountBilled: 'Account billed',
+    accountMultiplier: 'Account rate',
     avgDuration: 'Avg Duration',
     inSelectedRange: 'in selected range',
     perRequest: 'per request',
@@ -1058,6 +1061,7 @@ export default {
         concurrencyStatus: 'Concurrency',
         notes: 'Notes',
         priority: 'Priority',
+        billingRateMultiplier: 'Billing Rate',
         weight: 'Weight',
         status: 'Status',
         schedulable: 'Schedulable',
@@ -1225,6 +1229,8 @@ export default {
       concurrency: 'Concurrency',
       priority: 'Priority',
       priorityHint: 'Lower value accounts are used first',
+      billingRateMultiplier: 'Billing Rate Multiplier',
+      billingRateMultiplierHint: '>=0, 0 means free. Affects account billing only',
       expiresAt: 'Expires At',
       expiresAtHint: 'Leave empty for no expiration',
       higherPriorityFirst: 'Lower value means higher priority',

frontend/src/i18n/locales/zh.ts

@@ -426,6 +426,9 @@ export default {
     totalCost: '总消费',
     standardCost: '标准',
     actualCost: '实际',
+    userBilled: '用户扣费',
+    accountBilled: '账号计费',
+    accountMultiplier: '账号倍率',
     avgDuration: '平均耗时',
     inSelectedRange: '所选范围内',
     perRequest: '每次请求',
@@ -1108,6 +1111,7 @@ export default {
         concurrencyStatus: '并发',
         notes: '备注',
         priority: '优先级',
+        billingRateMultiplier: '账号倍率',
         weight: '权重',
         status: '状态',
         schedulable: '调度',
@@ -1359,6 +1363,8 @@ export default {
       concurrency: '并发数',
       priority: '优先级',
       priorityHint: '优先级越小的账号优先使用',
+      billingRateMultiplier: '账号计费倍率',
+      billingRateMultiplierHint: '>=0，0 表示该账号计费为 0；仅影响账号计费口径',
       expiresAt: '过期时间',
       expiresAtHint: '留空表示不过期',
       higherPriorityFirst: '数值越小优先级越高',

frontend/src/types/index.ts

@@ -428,6 +428,7 @@ export interface Account {
   concurrency: number
   current_concurrency?: number // Real-time concurrency count from Redis
   priority: number
+  rate_multiplier?: number // Account billing multiplier (>=0, 0 means free)
   status: 'active' | 'inactive' | 'error'
   error_message: string | null
   last_used_at: string | null
@@ -457,7 +458,9 @@ export interface Account {
 export interface WindowStats {
   requests: number
   tokens: number
-  cost: number
+  cost: number // Account cost (account multiplier)
+  standard_cost?: number
+  user_cost?: number
 }
 
 export interface UsageProgress {
@@ -522,6 +525,7 @@ export interface CreateAccountRequest {
   proxy_id?: number | null
   concurrency?: number
   priority?: number
+  rate_multiplier?: number // Account billing multiplier (>=0, 0 means free)
   group_ids?: number[]
   expires_at?: number | null
   auto_pause_on_expired?: boolean
@@ -537,6 +541,7 @@ export interface UpdateAccountRequest {
   proxy_id?: number | null
   concurrency?: number
   priority?: number
+  rate_multiplier?: number // Account billing multiplier (>=0, 0 means free)
   schedulable?: boolean
   status?: 'active' | 'inactive'
   group_ids?: number[]
@@ -593,6 +598,7 @@ export interface UsageLog {
   total_cost: number
   actual_cost: number
   rate_multiplier: number
+  account_rate_multiplier?: number | null
 
   stream: boolean
   duration_ms: number
@@ -852,23 +858,27 @@ export interface AccountUsageHistory {
   requests: number
   tokens: number
   cost: number
-  actual_cost: number
+  actual_cost: number // Account cost (account multiplier)
+  user_cost: number // User/API key billed cost (group multiplier)
 }
 
 export interface AccountUsageSummary {
   days: number
   actual_days_used: number
-  total_cost: number
+  total_cost: number // Account cost (account multiplier)
+  total_user_cost: number
   total_standard_cost: number
   total_requests: number
   total_tokens: number
-  avg_daily_cost: number
+  avg_daily_cost: number // Account cost
+  avg_daily_user_cost: number
   avg_daily_requests: number
   avg_daily_tokens: number
   avg_duration_ms: number
   today: {
     date: string
     cost: number
+    user_cost: number
     requests: number
     tokens: number
   } | null
@@ -876,6 +886,7 @@ export interface AccountUsageSummary {
     date: string
     label: string
     cost: number
+    user_cost: number
     requests: number
   } | null
   highest_request_day: {
@@ -883,6 +894,7 @@ export interface AccountUsageSummary {
     label: string
     requests: number
     cost: number
+    user_cost: number
   } | null
 }
 

frontend/src/views/admin/AccountsView.vue

@@ -61,6 +61,11 @@
           <template #cell-usage="{ row }">
             <AccountUsageCell :account="row" />
           </template>
+          <template #cell-rate_multiplier="{ row }">
+            <span class="text-sm font-mono text-gray-700 dark:text-gray-300">
+              {{ (row.rate_multiplier ?? 1).toFixed(2) }}x
+            </span>
+          </template>
           <template #cell-priority="{ value }">
             <span class="text-sm text-gray-700 dark:text-gray-300">{{ value }}</span>
           </template>
@@ -193,6 +198,7 @@ const cols = computed(() => {
     c.push(
       { key: 'usage', label: t('admin.accounts.columns.usageWindows'), sortable: false },
       { key: 'priority', label: t('admin.accounts.columns.priority'), sortable: true },
+      { key: 'rate_multiplier', label: t('admin.accounts.columns.billingRateMultiplier'), sortable: true },
       { key: 'last_used_at', label: t('admin.accounts.columns.lastUsed'), sortable: true },
     { key: 'expires_at', label: t('admin.accounts.columns.expiresAt'), sortable: true },
     { key: 'notes', label: t('admin.accounts.columns.notes'), sortable: false },

frontend/src/views/admin/UsageView.vue

@@ -94,7 +94,7 @@ const exportToExcel = async () => {
         t('admin.usage.cacheReadTokens'), t('admin.usage.cacheCreationTokens'),
         t('admin.usage.inputCost'), t('admin.usage.outputCost'),
         t('admin.usage.cacheReadCost'), t('admin.usage.cacheCreationCost'),
-        t('usage.rate'), t('usage.original'), t('usage.billed'),
+        t('usage.rate'), t('usage.accountMultiplier'), t('usage.original'), t('usage.userBilled'), t('usage.accountBilled'),
         t('usage.firstToken'), t('usage.duration'),
         t('admin.usage.requestId'), t('usage.userAgent'), t('admin.usage.ipAddress')
       ]
@@ -115,8 +115,10 @@ const exportToExcel = async () => {
         log.cache_read_cost?.toFixed(6) || '0.000000',
         log.cache_creation_cost?.toFixed(6) || '0.000000',
         log.rate_multiplier?.toFixed(2) || '1.00',
+        (log.account_rate_multiplier ?? 1).toFixed(2),
         log.total_cost?.toFixed(6) || '0.000000',
         log.actual_cost?.toFixed(6) || '0.000000',
+        (log.total_cost * (log.account_rate_multiplier ?? 1)).toFixed(6),
         log.first_token_ms ?? '',
         log.duration_ms,
         log.request_id || '',