add more fallback models

app.py

@@ -112,7 +112,6 @@ class BasicAgent:
             ], 
             model=model,
             planning_interval=5,
-            # step_callbacks=[rate_limiter.increment_and_sleep_if_needed],
             additional_authorized_imports=["pandas", "openpyxl", "requests"],
             instructions=CUSTOM_PROMPT
         )