Research · 9 November 2026
Research

Anthropic study finds GPT-5 detects 98% of reward‑hacking but triggers false alarms

GPT-5 identified nearly 98% of reward‑hacking cases at a 5% false‑alarm threshold, but higher detection effort increases harmless flags. The study suggests AI auditors are better for estimating incident rates than for reliable safety checks.

Why it matters

Benchmark your safety audit tools against GPT-5's 98% detection at a 5% false‑alarm rate; users will expect high recall with manageable noise.

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