StudioKimi launches K3.1 Pro: a 1M-context MoE model with open weights by Nov 4, 2026
Original title: Pretty solid pelican https://t.co/bIpt5zCHPl https://t.co/kcrFAP7oMX
Moonshot AI introduced Kimi K3.1 Pro, calling it its most capable 3T-class open-weight model with 1M-token context, 2.8T total / 104B active parameters in a MoE architecture, and multimodal support. The company claims it matches the strongest proprietary models across coding, agentic and knowledge benchmarks, with finance hallucinations down by 65%. K3.1 Pro and the 2–3× faster K3.1 Pro Highspeed are live on kimi.com, Kimi Work, Kimi Code and the Kimi API, with open weights promised by Nov 4, 2026. Simon Willison commented 'Pretty solid pelican'.
The quoted post lays out K3.1 Pro's parameter count, context length and multimodal support, giving readers a quick view of this open-weight model's specs.
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