Epoch AI
@EpochAIResearch
Epoch AI says **GPT-6 Astra** set a new **ECI** record at **169**, up from the prior best of **163**, while staying within their uncertainty band for the reasoning-era ECI trend.
- Also reports new records on Epoch’s math, continual learning, and game-puzzles benchmarks.
- On long-horizon coding (**MirrorCode**), Astra ranks between Opus 4.7 and Fable 5.
- OpenAI gave Epoch pre-release access; charts and per-benchmark detail are in the thread (FrontierMath Open Problems / Tier 4 saturation notes, FrontierMath Erdős, MirrorCode 46.7% High-effort).
Primary source: @EpochAIResearch thread.
