LiveNerf: Open-Source Tool Tracks Whether Claude Opus 5.5 Is Being Secretly Nerfed
In response to community suspicions that Claude Opus 5.5 has been secretly nerfed, a developer launched LiveNerf, an open-source project that daily reruns independent benchmarks like GPQA and SWE-bench to track the model's performance over time.
2026-09-28 ~ 2026-09-30 · 2 related posts
- Episode 1: NerfBench retests find no stealth nerfing of Claude Opus 5.5(2026-09-26, 2 posts)
- Episode 2: LiveNerf: Open-Source Tool Tracks Whether Claude Opus 5.5 Is Being Secretly Nerfed(2026-09-28, 2 posts)
- LiveNerf repo tracks Opus 5.5 daily benchmarks to detect if Anthropic nerfs the model — TheOnlyVibemaster · 2026-09-28
- LiveNerf: open-source project tracks day-by-day whether Opus 5.5 gets nerfed — TheOnlyVibemaster · 2026-09-30