anthropics / anthropics/claude-code
[Bug] Model switch to Opus triggered during security analysis task with Claude 3.5 Sonnet
- Dominant language
- Python
- Stars
- 145k
- Forks
- 23.1k
- PR merge metrics
- PR metrics pending
Description
**Bug Description**
Asked Fable 5.1 in Claude Code to read the Pentest report to verify the findings in the code an then fix them. It got flagged and switched to Opus 4.8.
**Environment Info**
- Platform: linux
- Terminal: konsole
- Version: 2.1.267
- Feedback ID: 045cc08d-5888-457b-83b2-6b55e2b6f8e6
**Errors**
```json
[]
```
Contributor guide
No contributing guide indexed for this repository
Research direction
No files, tests, or entry points are named. Start by reviewing feedback ID 045cc08d-5888-457b-83b2-6b55e2b6f8e6 and reproduce the Pentest-report prompt in Claude Code on Linux with Claude 3.5 Sonnet. Done means the model-selection behavior is explained and the reported switch is corrected or confirmed as intended.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- linux
- Domain
- ai, security
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 38/100