#moonshot

A pelican riding a bicycle past a large padlock that is starting to open, with the Kimi K3.1 Pro name and the date November 4 in the background

AIOctober 25, 2026

Kimi K3.1 Pro lands on the API, open weights promised by November 4

On October 23, 2026, Moonshot opened Kimi K3.1 Pro on its API and promised the full weights by November 4. Artificial Analysis ranks it just behind Claude Opus 5.5: a soon-to-be-open model is now playing in the closed models' league.

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