Introducing Kimi K3.1 Pro

Summary

Moonshot released Kimi K3.1 Pro on its Kimi API, not yet as open weights, with full weights promised by Nov 4, 2026. Input tokens cost $2.00 and output $10.00 per million, and a Highspeed version runs 2-3x faster at twice the price. Artificial Analysis scored it 55, behind only Claude Opus 5.5 at 58.

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