ai-agents-model-param-conflict-when-using-a-model-e-g-gpt-5-that-does-not-support-5fcc299f

THEN Set `litellm.drop_params=True` globally or per request to silently drop unsupported parameters. Alternatively, explicitly allow the parameter by including `allowed_openai_params=['reasoning_effort']` in the request. For the proxy, add `litellm_settings: drop_params: true` to the config.

# In your code:
litellm.drop_params = True
# Or per request:
response = litellm.completion(..., allowed_openai_params=['reasoning_effort'])