When trying to use gpt 5.2 (not -Codex): Unsupported value: 'low' is not supported with the 'gpt-5.1-codex-max' model.

Resolved 💬 2 comments Opened Jan 11, 2026 by datacatalyst-io Closed Jan 11, 2026

What version of Codex is running?

v0.80.0

What subscription do you have?

Pro

Which model were you using?

Trying to use gpt5.2 xhigh

What platform is your computer?

WSL 2 on Windows

What issue are you seeing?

After latest upgrade if I try to use any model other than gpt5.2-codex, I get some variant of:

■ {
"error": {
"message": "Unsupported value: 'low' is not supported with the 'gpt-5.1-codex-max' model. Supported values are:
'medium'.",
"type": "invalid_request_error",
"param": "text.verbosity",
"code": "unsupported_value"
}
}

In this case I'm trying to use gpt-5.2 on xhigh.

What steps can reproduce the bug?

  1. Launch Codex v0.80.0 on Windows in WSL 2
  2. Change the model to gpt5.2 xHigh
  3. Type "Ready to go?"

What is the expected behavior?

Expected: Some kind of affirmation.
Actual: invalid_request_error

Additional information

_No response_

View original on GitHub ↗

This issue has 2 comments on GitHub. Read the full discussion on GitHub ↗