Every release within 3 points of the best model before it, 2023 to 29 October 2026.
Frontier-level: ECI within 3 points of the best model released before it. New record: beats every earlier model. ECI is Epoch AI's Capabilities Index, where higher is better. Gaps count days between consecutive releases in the current selection, with same-day releases counted once and each gap dated by the later release.
Source: Epoch AI data (CC BY 4.0), downloaded 29 Oct 2026.