Claude Model Performance Megathread We’ve seen an increase in posts about changes in Claude’s model quality and behavior. Please use this thread for discussion about: Opus, Sonnet, or Fable performance Possible regressions or degraded output Instruction-following issues Context or memory issues Changes compared to previous model behavior Model comparisons related to recent performance When reporting an issue, please include: Model used Claude Code version or interface What changed Reproducible prompts or examples if possible Similar performance-related posts may be redirected here while this megathread is active. Specific technical bugs with reproducible behavior can still be posted separately using the Bug / Issue flair. submitted by /u/Waste_Net7628
Originally posted by u/Waste_Net7628 on r/ClaudeCode
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