Launches·October 23, 2026 at 1:45 PM EDT·2 sources
Moonshot AI Launches New Kimi K3.1 Pro Model
Context window1M-token
Full weights releaseNovember 4
Model scale3T-class
What happened
- Moonshot AI announced Kimi K3.1 Pro, built on the architecture of its Kimi K3 predecessor.
- K3.1 Pro is a 3T-class open-weight model with a 1M-token context window, according to Kimi.
- Moonshot AI said the model rivals top-tier U.S. frontier models on some benchmarks and ranks fourth on the Artificial Analysis Intelligence leaderboard.
Model scale
3T-class
Context window
1M-token
Full weights release
November 4
Artificial Analysis Intelligence ranking
fourth
Why it matters
The launch highlights continued competition in advanced AI models and the growing availability of open-weight systems. It may matter to technology investors and venture professionals tracking model capabilities and platform competition.
What to watch. Kimi is scheduled to release the full model weights by November 4.
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Timeline
- First reported by TechmemeOct 23Kimi unveils K3.1 Pro, a 3T-class open-weight model with a 1M-token context window, and K3.1 Pro Highspeed, with full weights to be released by November 4 (Kimi)
- The Information reportsYesterdayMoonshot AI Launches New Kimi K3.1 Pro Model
Who is involved
Moonshot AI Launches New Kimi K3.1 Pro ModelMoonshot AIKimi
Company
Sources (2)
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