GPT-6 Astra Solves Every FrontierMath Tier 4 Problem

Epoch AI announced that GPT-6 Astra solved the last remaining problem, completing all questions in the FrontierMath Tier 4 benchmark—research-level math problems released only 14 months ago to test the limits of AI reasoning.

2026-09-11 ~ 2026-09-11 · 4 related posts

• GPT-6 Astra solves final FrontierMath Tier 4 problem, completing the benchmark — Miles_Brundage · 2026-09-11
• FrontierMath Tier 4 fully solved 14 months after launch; LEAP panel forecasts lag reality — Afinetheorem · 2026-09-11
• GPT-6 Astra Solves Final FrontierMath Tier 4 Problem, Saturating the Benchmark in ~14 Months — soumitrashukla9 · 2026-09-11

1 near-duplicate retellings: NathanpmYoung