[BUG] I'm experiencing the same issue on Claude Max plan in Seoul, Korea.

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?

I'm experiencing the same issue on Claude Max plan in Seoul, Korea.

• Claude Code version: 2.1.32 (up to date)
• Model claude-opus-4-6 can be selected manually via /model,

but the thinking lever (arrow key control) is not functional.

• The model appears in the list but there's no way to confirm

it's actually running Opus 4.6 vs 4.5.

Would appreciate a fix or workaround. Thanks!

What Should Happen?

I need to be able to configure the claude-opus-4-6 model in the CLI environment. I'm a Max plan user and access Claude from Seoul, Korea. If the delay in updating is due to the rollout, I don't understand the situation.

Error Messages/Logs

Steps to Reproduce

<img width="929" height="186" alt="Image" src="https://github.com/user-attachments/assets/ecfaea31-c086-4726-b3f7-d1f92f638863" />

I've applied the model to force the addition of a chat input window recommended by the IDE, which is not selected in the CLI. However, the level setting using the left and right arrow keys does not work, so I cannot trust the proper installation of claude-opus-4-6.

<img width="911" height="420" alt="Image" src="https://github.com/user-attachments/assets/7658d84e-ea31-4695-a522-3980008c0a00" />
<img width="931" height="222" alt="Image" src="https://github.com/user-attachments/assets/d4035a96-5bd5-4742-bd9e-0bf5c1921aa4" />

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

Current version: 2.1.32

Claude Code Version

Current version: 2.1.32

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_