FrontierMath Erdős benchmark: Astra solves 2 of 68, others fail
Epoch AI's new FrontierMath Erdős benchmark, featuring 68 unsolved problems selected by Thomas Bloom, saw a pre-release Astra solve 2, while GPT-5.6 Sol, GPT-5.5, Claude Fable 5.1, and Claude Fable 5 all failed.
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