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Announcing FrontierMath Erdős | Epoch AI

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A benchmark of 68 significant Erdős problems, open as of August 2026, curated by Thomas Bloom and formalized in Lean. AI systems must prove or disprove them within a fixed budget.

If you’ve followed AI math capabilities at all this year, you’ve likely heard of Erdős problems. Some of the first open math problems to be solved by AI were Erdős problems. The first unequivocal “wow” moment for AI in math came on an Erdős problem. Erdős problems have become something of a central benchmark for tracking AI math capabilities, but this status is relatively informal. With our new math benchmark, FrontierMath Erdős, we aim to add some rigor when it comes to using Erdős problems to measure AI math capabilities. What is an Erdős problem? The phrase has come to mean any problem…

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