Users report sudden quality drop in Claude Code Opus 5, potentially linked to watermarking
iNcorruptibly · reddit · 2026-08-22
A long-time Claude Code user observed a dramatic shift in Claude Opus 5's writing quality over the last 24 hours. The output has become significantly more redundant and verbose, with a distinct style change. The user, who is typically skeptical of claims about model nerfing, found this change too obvious to ignore and speculates it might be related to the newly implemented watermarking system.
Related event: Users Suspect Opus 5 Verbosity Linked to Watermarking(2 posts)→
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