OpenAI's GPT-6 Astra Cracks Epoch's Hardest Math Benchmark in 14 Months

A math benchmark built to resist AI just fell. GPT-6 Astra cracked the final Tier 4 problem, closing out a 98 percent run in 14 months.

$OpenAI's GPT-6 Astra Cracks Epoch's Hardest Math Benchmark in 14 Months$

Source

Epoch AI

Published

Sep 10, 2026, 5:38 PM

Author

AlphaSignal Newsroom

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1 min read

A math benchmark built to resist AI just fell. GPT-6 Astra cracked the final Tier 4 problem, closing out a 98 percent run in 14 months.

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