[BUG] OpenAIException - Unsupported parameter: 'stop' is not supported with this model.

[tercel]

Description

model: gpt-5.1

06:15:13 - LiteLLM:DEBUG: main.py:5605 - openai.py: Received openai error - Error code: 400 - {'error': {'message': "Unsupported parameter: 'stop' is not supported with this model.", 'type': 'invalid_request_error', 'param': 'stop', 'code': 'unsupported_parameter'}}
06:15:13 - LiteLLM:DEBUG: utils.py:347 - RAW RESPONSE:
Error code: 400 - {'error': {'message': "Unsupported parameter: 'stop' is not supported with this model.", 'type': 'invalid_request_error', 'param': 'stop', 'code': 'unsupported_parameter'}}

Steps to Reproduce

$ pip show crewai
Name: crewai
Version: 1.4.1

Expected behavior

no error

Screenshots/Code snippets

Version: 1.4.1

Operating System

Ubuntu 20.04

Python Version

3.10

crewAI Version

Version: 1.4.1

crewAI Tools Version

Version: 1.4.1

Virtual Environment

Venv

Evidence

Version: 1.4.1

Possible Solution

None

Additional context

None

[Vidit-Ostwal]

Can you bump the version of crewai and also share how you are initializing the llm object?