diff --git a/lang_agent/graphs/routing.py b/lang_agent/graphs/routing.py
index 25fa51b..e298695 100644
--- a/lang_agent/graphs/routing.py
+++ b/lang_agent/graphs/routing.py
@@ -28,7 +28,7 @@ from langgraph.checkpoint.memory import MemorySaver
 class RoutingConfig(KeyConfig):
     _target: Type = field(default_factory=lambda: RoutingGraph)
 
-    llm_name: str = "qwen-turbo"
+    llm_name: str = "qwen-flash"
     """name of llm"""
 
     llm_provider:str = "openai"