[BUG]

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 code extension for vs code v 2.1.116? it produces an error below, while claude code v2.1.114 works just fine

What Should Happen?

no error

Error Messages/Logs

API Error: 400 {"error":{"message":"{"message":"thinking: Input tag 'adaptive' found using 'type' does not match any of the expected tags: 'disabled', 'enabled'"}. Received Model Group=claude-4-5-sonnet\nAvailable Model Group Fallbacks=['claude-4-5-sonnet-west']\nError doing the fallback: {"message":"thinking: Input tag 'adaptive' found using 'type' does not match any of the expected tags: 'disabled', 'enabled'"}","type":"None","param":"None","code":"400"}}API Error: 400 {"error":{"message":"{"message":"thinking: Input tag 'adaptive' found using 'type' does not match any of the expected tags: 'disabled', 'enabled'"}. Received Model Group=claude-4-5-sonnet\nAvailable Model Group Fallbacks=['claude-4-5-sonnet-west']\nError doing the fallback: {"message":"thinking: Input tag 'adaptive' found using 'type' does not match any of the expected tags: 'disabled', 'enabled'"}","type":"None","param":"None","code":"400"}}

Steps to Reproduce

update extension to v2.1.116 in vs code insiders

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.114

Claude Code Version

2.1.116

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_