anthropics / anthropics/claude-code

[Bug] Claude Code downgrades to Opus instead of maintaining requested model

Open
#95,411 0 comments 0 reactions 0 assignees View on GitHub
area:model bug needs-repro platform:macos
Dominant language
Python
Stars
145k
Forks
23.1k
PR merge metrics
PR metrics pending

Description

**Bug Description**
Not cool that it downgrade to Opus. I'm investigating a serving incident and I need Fable. Opus has shown to be incapable of handling this level of complexity.

**Environment Info**
- Platform: darwin
- Terminal: iTerm.app
- Version: 2.1.270
- Feedback ID: 8ac51205-27df-48ab-bde5-1d96df7d6634

**Errors**
```json
[]
```

Contributor guide

No contributing guide indexed for this repository

Research direction

Reproduce the downgrade on darwin in iTerm.app using Claude Code version 2.1.270, keeping feedback ID 8ac51205-27df-48ab-bde5-1d96df7d6634 available for investigation. Trace the model-selection path and verify that a request for Fable remains on Fable rather than switching to Opus.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
cli
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
38/100

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