Yale Physicists Re-Grade AI Physics Benchmarks, Find Frontier Models Massively Underscored

MikePFrank · x · 2026-09-16

A new paper had Yale physicists manually re-grade supposed failures of frontier models on major physics benchmarks and found much of the problem lay in broken questions and grading, not the models. Once corrected, frontier models nearly saturated several benchmarks: GPT-5.6 Sol jumps from 47.3% to 78.7% on HLE-Physics mean@4 and hits 94.4% pass@4 on corrected CritPt. The authors call it a brutal indictment of benchmark indices, echoing long-standing doubts from lab employees about leaderboards like Artificial Analysis ranking GPT-6 Astra below peers.

Related event: Yale Physicists' Expert Re-Grading Finds Physics Benchmarks Near-Saturated and Broken(6 posts)→

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