Corroborated event · 3 outlets
Moonshot AI introduced Kimi K3.1 Pro, a large language model with 3 trillion parameters that it says can outperform Claude Opus 5.5 and GPT-6 Astra on some tasks.
AI brief
Kimi K3.1 Pro became available on the Kimi API, and Moonshot says full model weights will be released by Nov 4, 2026. A "Highspeed" variant is offered at 2-3x the speed and twice the price.
Written by AI from Simon Willison's Weblog's published text.
Background
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Moonshot AI
- Newest model on the API
- Kimi K3.1 Pro · 23 Oct 2026 · $2 in / $10 out per million tokens
- Last 30 days
- 1 news story
More coverage of this story (2)
Moonshot AI launches Kimi K3.1 Pro model
Moonshot AI launches new flagship Kim K3.1 Pro model with 3T parameters
SiliconANGLE AI · 24 Oct 2026, 00:55
Chinese AI model Kimi K3.1 Pro is closing in on Anthropic's Claude Opus 5.5
The Decoder · 23 Oct 2026, 19:00
Primary source
“Introducing Kimi K3.1 Pro Kimi K3.1 Pro landed on the Kimi API today - it's not yet open weights, but Moonshot promise "Full model weights will be released by Nov 4, 2026".”
Interpretation or community commentary rather than straight reporting.
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