Moonshot AI · Chat and reasoning · 2.8T parameters · 104B active
Kimi K3.1 Pro
Moonshot AI released Kimi K3.1 Pro in its apps and API on Oct 23, 2026; the weights are promised by Nov 4, 2026. Sizing and pricing appear here the day they ship.
Parameters2.8T104B active per token
Context1M tokensmaximum published
Checkpointpendingweights promised by Nov 4, 2026
Licensenot announcedcheck before commercial use
AnnouncedOct 23, 2026weights by Nov 4, 2026
Repository—Kimi-K3.1-Pro
What is documented about Kimi K3.1 Pro
news checked 2026-10-27Released on 2026-10-23 in Moonshot's apps and API (a Highspeed variant exists; API prices $2 / $10 per million tokens, $4 / $20 for Highspeed). A post-trained version of Kimi K3: 2.8T parameters, 104B active, 1M-token context. Weights are not downloadable yet: Moonshot's blog says the full weights will be released by 2026-11-04; no licence announced, and no K3.1 repository on Hugging Face on 2026-10-27. Published scores (65.7% on Terminal-Bench 4.0) are vendor-declared. No model simply named 'Kimi K3.1' exists.
- https://huggingface.co/moonshotai
- https://www.kimi.ai/blog/kimi-k3-1-pro
- https://simonwillison.net/2026/Oct/23/kimi-k31-pro/
- https://thenextweb.com/news/moonshot-kimi-k3-1-pro-open-weight-cyber
Kimi K3.1 Pro · related