Moonshot AILaunchAI ModelsOctober 23, 2026

Moonshot releases Kimi K3.1 Pro open-weight model

Read original source →kimi.ai

Kimi K3.1 Pro is a 3T-class open-weight model with a 1M-token context window, scoring 65.7% on Terminal-Bench 4.0 — ahead of GPT-6 Astra (58.2%) and just behind Claude Opus 5.5 (66.4%). A Highspeed variant runs 2-3x faster; full weights land by Nov 4.

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