GPT-6 Astra sets Epoch AI ECI record at 169, tops math and continual learning benchmarks
Jsevillamol · x · 2026-09-04
Epoch AI reports GPT-6 Astra set a new ECI record of 169, up from the prior best of 163 though within the reasoning-era trend's uncertainty range. Astra also set records on Epoch's math, continual learning, and game-puzzles benchmarks, and ranks between Opus 4.7 and Fable 5 on the long-horizon coding benchmark MirrorCode. Notably, this is Epoch's first ECI value based on pre-release evals, with OpenAI granting early test access.
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