model_reasoning_effort is Not Supported in gpt-5.1-codex

What version of Codex is running?

0.58.0

What subscription do you have?

chatGPT Pro

Which model were you using?

gpt-5.1-codex

What platform is your computer?

win11

What issue are you seeing?

unexpected status 400 Bad Request: {
"error": {
"message": "Unsupported value: 'none' is not supported with the 'gpt-5.1-codex' model. Supported values are: 'low', 'medium', and 'high'.",
"type": "invalid_request_error",
"param": "reasoning.effort",
"code": "unsupported_value"
}
}

What steps can reproduce the bug?

<img width="1037" height="543" alt="Image" src="https://github.com/user-attachments/assets/cd0ab515-d80e-44b2-80eb-8987f8db3464" />

What is the expected behavior?

_No response_

Additional information

_No response_