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Claude Code Issues / #73099

[Bug] Model auto-downgrade from Fable 5 to Opus 4 on complex security tasks

Status Closed — not planned
Reported on v2.1.198
Maintainer reply None cached
Activity 1 comment · opened Jul 2, 2026 · closed Aug 21, 2026

Bug Description
I asked fable 5 to improve the security implementation of a server, and it flagged as a problem and switch to opus 4.8 while it should keep as fable because this is complex and Opus have been failing lately to do it properly

Environment Info

  • Platform: linux
  • Terminal: vscode
  • Version: 2.1.198
  • Feedback ID: 3de4cf69-627c-495a-a92b-91a65a1ef958

Errors

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