refinements

app.py

@@ -23,7 +23,7 @@ st.session_state.key = open_api_key
 
 def init_session() -> None:
     tools = get_tools()
-    st.session_state.agent = Agent(get_llm(model_name='gpt-4', model_temperature=0, api_key=st.session_state.key),
+    st.session_state.agent = Agent(get_llm(model_name='gpt-4o', model_temperature=0, api_key=st.session_state.key),
                                    tools)
     st.session_state.socrates = SocraticGPT(role=SOCRATES, tools=st.session_state.agent._tools,
                                             key=st.session_state.key, n_round=N_ROUND)