[BUG] tools.10.model: 'claude-sonnet-4-6' cannot be used as an advisor when the request model is 'claude-opus-4-7'.

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?

In claude code, I am getting this error, everytime I run a task. I am using the latest claude-code with opus selected

tools.10.model: 'claude-sonnet-4-6' cannot be used as an advisor when the request model is 'claude-opus-4-7'.

<img width="1728" height="1117" alt="Image" src="https://github.com/user-attachments/assets/109b13ec-8004-4ec0-b54d-5266feb34448" />

What Should Happen?

It should run without error.

Error Messages/Logs

API Error: 400 tools.10.model: 'claude-sonnet-4-6' cannot be used as an advisor when the request model is 'claude-opus-4-7'.

Steps to Reproduce

1. Starte Claude Code in mac-terminal
2. Send a prompt and it will throw error

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.144

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_