Unable to use gpt-5.2 xhigh
Resolved 💬 2 comments Opened Jan 10, 2026 by miguelpieras Closed Jan 11, 2026
💡 Likely answer: A maintainer (etraut-openai, contributor)
responded on this thread — see the highlighted reply below.
What version of Codex is running?
codex-cli 0.80.0
What subscription do you have?
Pro
Which model were you using?
gpt-5.2
What platform is your computer?
Darwin 24.6.0 arm64 arm
What issue are you seeing?
{
"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"
}
}
What steps can reproduce the bug?
Opened a new codex session, set the /model to gpt-5.2 xhigh and sent a message.
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Happens in 0.79 as well, upgrading to 0.80 does not fix it.
Duplicate of #9039