update the model

agent.py

@@ -15,7 +15,7 @@ from tools import level1_tools
 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)