From c28f691f32e0b90d0b1e2c9ab31915b8f8017426 Mon Sep 17 00:00:00 2001
From: erio <asakifeng@gmail.com>
Date: Fri, 6 Mar 2026 14:32:08 +0800
Subject: [PATCH] fix(openai): remove misplaced passthrough check from
 isModelSupportedByAccount
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isModelSupportedByAccount 不被 OpenAI 调度路径调用，
OpenAI /responses 和 /chat/completions 走的是
openai_account_scheduler.go，透传短路已在 PR #806 的
第二个 commit 中正确添加到该文件。

此处的检查是多余的死代码，因为 OpenAI 账号不会走到
isModelSupportedByAccount 的这个分支。
---
 backend/internal/service/gateway_service.go | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/backend/internal/service/gateway_service.go b/backend/internal/service/gateway_service.go
index 9f5c8299..075f3ef0 100644
--- a/backend/internal/service/gateway_service.go
+++ b/backend/internal/service/gateway_service.go
@@ -3320,10 +3320,6 @@ func (s *GatewayService) isModelSupportedByAccount(account *Account, requestedMo
 	if account.Platform == PlatformSora {
 		return s.isSoraModelSupportedByAccount(account, requestedModel)
 	}
-	// OpenAI 透传模式：仅替换认证，允许所有模型
-	if account.Platform == PlatformOpenAI && account.IsOpenAIPassthroughEnabled() {
-		return true
-	}
 	// OAuth/SetupToken 账号使用 Anthropic 标准映射（短ID → 长ID）
 	if account.Platform == PlatformAnthropic && account.Type != AccountTypeAPIKey {
 		requestedModel = claude.NormalizeModelID(requestedModel)