LiveNerf's 29-day data finds no nerfing of Claude Opus 5.5
TheOnlyVibemaster · reddit · 2026-10-23
- The community project LiveNerf tracked Claude Opus 5.5 for 29 consecutive days using a frozen 78-question panel (2,262 samples total), and has drawn 1.5k stars on GitHub.
- Results: a daily average score of 59.0% vs. a launch-week baseline of 58.4% — no capability drop of 6.6 points or more was detected, weakening the claim that Anthropic nerfs its models, at least within LiveNerf's detection range.
- The author plans to expand to independently track other models and APIs with the same methodology, is in talks for potential funding, and will track Fable 5.5 the same way at launch.
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