diff --git a/.gitignore b/.gitignore
index fcaa2be16..f4cc92ce3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,8 @@ local
 .qwen/*
 .trae/*
 .claude-code-router/*
+.codebuddy/*
+.zed/*
 CLAUDE.local.md
 
 # vitest
diff --git a/src/renderer/src/aiCore/middleware/AiSdkMiddlewareBuilder.ts b/src/renderer/src/aiCore/middleware/AiSdkMiddlewareBuilder.ts
index eabdf1815..1f18e49ba 100644
--- a/src/renderer/src/aiCore/middleware/AiSdkMiddlewareBuilder.ts
+++ b/src/renderer/src/aiCore/middleware/AiSdkMiddlewareBuilder.ts
@@ -140,7 +140,17 @@ export function buildAiSdkMiddlewares(config: AiSdkMiddlewareConfig): LanguageMo
   return builder.build()
 }
 
-const tagNameArray = ['think', 'thought', 'reasoning']
+const tagName = {
+  reasoning: 'reasoning',
+  think: 'think',
+  thought: 'thought'
+}
+
+function getReasoningTagName(modelId: string | undefined): string {
+  if (modelId?.includes('gpt-oss')) return tagName.reasoning
+  if (modelId?.includes('gemini')) return tagName.thought
+  return tagName.think
+}
 
 /**
  * 添加provider特定的中间件
@@ -156,7 +166,7 @@ function addProviderSpecificMiddlewares(builder: AiSdkMiddlewareBuilder, config:
     case 'openai':
     case 'azure-openai': {
       if (config.enableReasoning) {
-        const tagName = config.model?.id.includes('gemini') ? tagNameArray[1] : tagNameArray[0]
+        const tagName = getReasoningTagName(config.model?.id.toLowerCase())
         builder.add({
           name: 'thinking-tag-extraction',
           middleware: extractReasoningMiddleware({ tagName })
@@ -168,13 +178,6 @@ function addProviderSpecificMiddlewares(builder: AiSdkMiddlewareBuilder, config:
       // Gemini特定中间件
       break
     case 'aws-bedrock': {
-      if (config.model?.id.includes('gpt-oss')) {
-        const tagName = tagNameArray[2]
-        builder.add({
-          name: 'thinking-tag-extraction',
-          middleware: extractReasoningMiddleware({ tagName })
-        })
-      }
       break
     }
     default:
diff --git a/src/renderer/src/utils/__tests__/api.test.ts b/src/renderer/src/utils/__tests__/api.test.ts
index ee91e2ad2..f25ac2e68 100644
--- a/src/renderer/src/utils/__tests__/api.test.ts
+++ b/src/renderer/src/utils/__tests__/api.test.ts
@@ -25,7 +25,7 @@ describe('api', () => {
     })
 
     it('should handle empty string gracefully', () => {
-      expect(formatApiHost('')).toBe('/v1/')
+      expect(formatApiHost('')).toBe('')
     })
   })
 
diff --git a/src/renderer/src/utils/api.ts b/src/renderer/src/utils/api.ts
index 5e9b8f91a..62d0db562 100644
--- a/src/renderer/src/utils/api.ts
+++ b/src/renderer/src/utils/api.ts
@@ -20,6 +20,10 @@ export function formatApiKeys(value: string): string {
  * @returns {string} 格式化后的 API 主机地址。
  */
 export function formatApiHost(host: string, apiVersion: string = 'v1'): string {
+  if (!host) {
+    return ''
+  }
+
   const forceUseOriginalHost = () => {
     if (host.endsWith('/')) {
       return true