diff --git a/config/config.example.js b/config/config.example.js
index 61b95afb..b3342c08 100644
--- a/config/config.example.js
+++ b/config/config.example.js
@@ -44,7 +44,7 @@ const config = {
     enabled: process.env.CLAUDE_CODE_USE_BEDROCK === '1',
     defaultRegion: process.env.AWS_REGION || 'us-east-1',
     smallFastModelRegion: process.env.ANTHROPIC_SMALL_FAST_MODEL_AWS_REGION,
-    defaultModel: process.env.ANTHROPIC_MODEL || 'us.anthropic.claude-3-7-sonnet-20250219-v1:0',
+    defaultModel: process.env.ANTHROPIC_MODEL || 'us.anthropic.claude-sonnet-4-20250514-v1:0',
     smallFastModel: process.env.ANTHROPIC_SMALL_FAST_MODEL || 'us.anthropic.claude-3-5-haiku-20241022-v1:0',
     maxOutputTokens: parseInt(process.env.CLAUDE_CODE_MAX_OUTPUT_TOKENS) || 4096,
     maxThinkingTokens: parseInt(process.env.MAX_THINKING_TOKENS) || 1024,
@@ -88,7 +88,7 @@ const config = {
     sessionSecret: process.env.WEB_SESSION_SECRET || 'CHANGE-THIS-SESSION-SECRET'
   },
 
-    // 🔒 客户端限制配置
+  // 🔒 客户端限制配置
   clientRestrictions: {
     // 预定义的客户端列表
     predefinedClients: [