It’s a minor thing because it is easy to handle but when you use codex in vscode it saves the current reasoning efford into the config.toml
Now when you set it to reasoning extra high and then switch to cli you get this:
$ codex
Error loading configuration: unknown variant `xhigh`, expected one of `minimal`, `low`, `medium`, `high`
in `model_reasoning_effort`
Just in case you stumble upon it and can’t figure it out: you can select another reasoning efford in the codex extension in vscode then and then run it again on cli.
Maybe codex cli could give that hint e.g. change the reasoning efford in your IDE extension to lower than Extra High or something more smart…