weird

app.py

@@ -71,7 +71,7 @@ def chain_node(state: AgentState, chain, name):
 # cell 3
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
 llm = ChatOpenAI(model="gpt-4o-mini-2024-07-18", temperature=0, api_key=OPENAI_API_KEY)
-llm_big = ChatOpenAI(model="gpt-4o-mini-2024-07-18", temperature=0, api_key=OPENAI_API_KEY)
+llm_big = ChatOpenAI(model="gpt-4o", temperature=0, api_key=OPENAI_API_KEY)
 
 eda_task = """Using the data in the dataframe `df` and the package statsmodels, first run an augmented dickey fuller test on the data.
             Using matplotlib plot the time series, display it and save it to 'plot.png'.