diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index 22813ab..4edc219 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -1,6 +1,8 @@
 import { NextRequest } from 'next/server'
 
-const LLM_API_URL = 'https://api.riotpiao.com/v1/chat/completions'
+const LLM_API_URL = process.env.NODE_ENV === 'production'
+  ? 'http://api-gateway.api.svc.cluster.local:8080/v1/chat/completions'
+  : 'https://api.riotpiao.com/v1/chat/completions'
 const MODEL = 'reasoning'
 
 const SYSTEM_PROMPT = `Poimen. Rock Liang's AI assistant. Answer about technical background, projects, expertise. Specific facts + metrics.