[BUG] Error 400 ""thinking.type.enabled" is not supported for this model" still exists in 2.1.113 when used with Opus 4.7 in Bedrock

Resolved 💬 10 comments Opened Apr 17, 2026 by malginin Closed Apr 26, 2026

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?

2.1.113 changelog claims to have fixed the error. However, using a Bedrock custom application profile based on Opus 4.7 still fails just like it did with 2.1.112:

hi
⎿  API Error: 400
{"type":"error","request_id":"req_txjtk5tatvmot5cmubv5hf3ulq2zsqyjhf3jwip2e5tt4lu6dsyq","error":{"type":"invalid_request_error","message":"\"thinking.type.enabled\"
is not supported for this model. Use \"thinking.type.adaptive\" and \"output_config.effort\" to control thinking behavior."}}

Tried this with and without ANTHROPIC_DEFAULT_OPUS_MODEL_SUPPORTED_CAPABILITIES=effort,xhigh_effort,max_effort,thinking,adaptive_thinking,interleaved_thinking

2.1.114 also has this problem.

What Should Happen?

Claude Code should function normally

Error Messages/Logs

Steps to Reproduce

  1. Configure an application inference profile in Bedrock based on the Opus 4.7
  2. Set AWS_PROFILE=x, CLAUDE_CODE_USE_BEDROCK=1, ANTHROPIC_MODEL='arn:...'
  3. Launch Claude Code, prompt it anything

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.113

Platform

AWS Bedrock

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_

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