**Bug Description** opus 4.8 seems broken since yesterday, became very dumb. you broke something **Environment Info** - Platform: darwin - Terminal: Apple_Terminal - Version: 2.1.187 - Feedback ID: f408fedf-a82e-465f-8dc3-8b414839d00e **Errors** ```json [] ```

[Bug] Claude 3.5 Opus model degradation in performance

Status Closed — not planned

Reported on v2.1.187

Maintainer reply None cached

Activity 1 comment · opened Jun 24, 2026 · closed Jul 1, 2026

Bug Description
opus 4.8 seems broken since yesterday, became very dumb. you broke something

Environment Info

Errors

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