update core model with gpt-4o

app.py

@@ -10,10 +10,11 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 # --- Basic Agent Definition ---
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
-from smolagents import ToolCallingAgent, DuckDuckGoSearchTool, HfApiModel
+from smolagents import CodeAgent, DuckDuckGoSearchTool, OpenAIServerModel
 class BasicAgent:
     def __init__(self):
-        self.agent = ToolCallingAgent(tools=[DuckDuckGoSearchTool()], model=HfApiModel())
+        model = OpenAIServerModel(model_id="gpt-4o")
+        self.agent = CodeAgent(tools=[DuckDuckGoSearchTool()], model=model)
         print("BasicAgent initialized.")
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")