GPT-6 Astra edges out Fable 5.1 on arXiv math benchmark at a third of the cost

Haider. @haider1Originally posted 2026.09.17

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GPT-6 Astra brutally mogged Fable 5.1 on a benchmark testing research-level math problems from recent arXiv papers 88.6% vs. 87.7%, while costing just $3.63/problem vs. $12.77 similar performance at less than one-third the cost

This post quotes another post: “BrokenArXiv and ArXivMath benchmarks updated with recently refuted conjectures”