Yang Zhilin's Moonshot AI published the 2.8-trillion-parameter model on Hugging Face on November 4th, under a Kimi-specific license.
By [Ryan Merket](https://runtimewire.com/author/ryan-merket)
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Primary source: [Kimi / Moonshot AI (official)](https://x.com/Kimi_Moonshot/status/2118010528123773297)
Why it matters #
The release lets developers download and serve Moonshot AI's most capable Kimi model instead of relying only on its API, while the Kimi-specific license keeps limits on that openness. Outside teams can now test Moonshot AI's coding and agent claims under their own harnesses, and customers gain a self-hosting option to weigh against hosted pricing.
Moonshot AI, led by co-founder and chief executive Yang Zhilin, released the model weights for Kimi K3.1 Pro on November 4th, 2026, completing a promise the Beijing company made when it introduced the model in October. Moonshot AI announced the release in a post on X that linked to the Kimi K3.1 Pro repository on Hugging Face and added: "We'll keep advancing open intelligence." The model card describes Kimi K3.1 Pro as…
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