Moonshot releases Kimi K3 weights, a 2.8 trillion parameter model

Moonshot AI has released the weights for Kimi K3, a 2.8 trillion parameter model, on Hugging Face. The files total approximately 1.56 terabytes. Simon Willison reported the release on July 27, noting that Moonshot had signaled the move earlier in the month.

Willison’s writeup describes K3 as a large model of considerable capability, though the supplied material does not detail specific benchmark results or technical architecture beyond its parameter count and file size.

The release carries licensing terms distinct from standard open-source conventions. Moonshot introduced a modified version of the MIT license with the prior K2 release, and that license framework applies here as well. The modification’s specific terms are not detailed in this dispatch, but its existence marks a departure from unmodified open-source licensing typically seen with other large weight releases.

No further technical specifications, training details, or comparative benchmarks accompany this report. The Specola notes the publication date of July 27 as reported by Willison, without independent confirmation of the underlying release timeline from Moonshot itself.

Readers seeking the model weights or license terms should consult the Hugging Face repository and the license file directly, as linked in Willison’s original post.