Epoch AI unveils FrontierMath Erdős: pre-release Astra solves only 2 of 68
Chris-MelodyFirst · reddit · 2026-09-04
Epoch AI announces FrontierMath Erdős, a new 68-problem benchmark. A pre-release Astra solved 2 of 68, while GPT-5.6 Sol, GPT-5.5, Claude Fable 5.1 and Claude Fable 5 all failed on every attempt, making it by far the hardest math benchmark for frontier models. Details in Epoch AI's announcement.
Related event: Epoch AI Launches FrontierMath Erdős; GPT-6 Astra First to Break Zero(10 posts)→
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