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THIS ONE IS FINISHED. It stopped being a frontier on 2026-09-07: saturated. The page stays, because what it recorded still happened.
Above ninety-eight per cent. The remaining errors are closer to marking noise than to mathematics.
98.1 per cent
Held by GPT-5. Set 2025-08-07. Written down here 2026-09-07.
The hardest fifth of a competition mathematics set which was, for several years, the standard measure of whether a language model could do mathematics at all. It is now answered very nearly perfectly. What survives of it is a useful date: the moment competition mathematics stopped being a frontier and became a formality.
That description was written when this frontier was opened, on 2026-09-07, and is never rewritten. Where it and the number above it disagree, the number is the reading and the description is history.
Where to check it: https://epoch.ai/data/ai-benchmarking-dashboard
The program reads it from https://epoch.ai/data/benchmarks.csv, which is the same figure in a form a script can parse.
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