The model `gpt-5.1-codex-max` does not exist or you do not have access to it.

What version of Codex is running?

0.61.0

What subscription do you have?

Plus

Which model were you using?

5.1-codex.max

What platform is your computer?

Darwin 24.3.0 arm64 arm

What issue are you seeing?

Whenever I attempt to send a message with the new 5.1-codex-max, I get this error:

Turn error: stream disconnected before completion: The model `gpt-5.1-codex-max` does not exist or you do not have access to it.

All other models work correctly. This also occurs when I try to prompt 5.1-codex-max via the API.

What steps can reproduce the bug?

Making any API call using this model

What is the expected behavior?

_No response_

Additional information

_No response_