ai-agents-model-compatibility-when-using-o1-preview-o1-mini-or-perplexity-models-167dac1f

THEN Before passing parameters to litellm, check if the model supports the 'stop' parameter. If not (e.g., o1 series, Perplexity), remove 'stop' from the kwargs. This can be done by patching litellm.completion to delete the 'stop' key, or by updating crewAI's LLM class to conditionally omit the default stop=['\nObservation:'] for such models.

```python
import litellm
original = litellm.completion
def patched(*args, **kwargs):
    if 'stop' in kwargs:
        kwargs.pop('stop')
    return original(*args, **kwargs)
litellm.completion = patched
```