LiveNerf: open-source project tracks day-by-day whether Opus 5.5 gets nerfed
TheOnlyVibemaster · reddit · 2026-09-30
A developer released LiveNerf, an open-source project letting the Claude community independently measure whether Opus 5.5's performance is degraded ('nerfed') in the weeks after release. It tracks performance daily with SWE-bench and SciCode under a standardized, reproducible methodology. Results won't be conclusive until day 20 after release; today's dip feeds the day-10 baseline. The project is self-funded—calibration took about a week's worth of a Pro plan—and motivated by a lack of transparency from AI companies. Repo: github.com/ninjahawk/livenerf.
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