[Bug] Invalid Model Name: "Fable 5" model not available in Claude Code
Status Closed — not planned
Reported on v2.1.226
Maintainer reply None cached
Activity 1 comment · opened Aug 11, 2026 · closed Sep 9, 2026
Bug Description
I’m building a foreign language learning app; why does a notification pop up and the Fable 5 model shut down?: Fable 5's safeguards flagged this message. Our intentionally broad safeguards allow us to deliver more capabilities faster, but can sometimes flag legitimate coding, cybersecurity, and biology tasks. Switched to Opus 4.8. Send feedback with /feedback or learn more: https://support.claude.com/en/articles/15363606
Environment Info
- Platform: darwin
- Terminal: Apple_Terminal
- Version: 2.1.226
- Feedback ID: db7a4c9d-8054-41a9-b8dc-9bb1fd7c32f7
Errors
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