update model

agent.py

@@ -17,7 +17,7 @@ load_dotenv()
 def build_agent_graph():
     """Build the graph"""
     # Load environment variables from .env file
-    llm = ChatOpenAI(model="gpt-4o-mini")
+    llm = ChatOpenAI(model="gpt-4o")
     
     # Bind tools to LLM
     llm_with_tools = llm.bind_tools(level1_tools)