[BUG] 2.1.89 Opus 1m no longer available

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Claude opus 1m is no longer in the models list. When it is set through slash command it says it is not available on this plan and redirects to documentation that shows it should be available for max plan users. This was introduced in 2.1.89.

This is separate from previous reports as those had been patched. This is a regression.

What Should Happen?

Opus 1m should be available.

Error Messages/Logs

Steps to Reproduce

Open claude code 2.1.89 and try to set the model to opus 1m.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.88

Claude Code Version

2.1.89

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

_No response_