Kimi-K3 is the latest model from Moonshot AI, set for release on July 27, 2026. It is the world's first open 3T-class model, featuring a new architecture based on Kimi Delta Attention and Attention Residuals, with native agentic capabilities including tool calling, browsing, and multi-step reasoning.

Moonshot AI's Kimi K3 was launched on July 17 but halted new subscriptions due to overwhelming demand. The company plans to release K3's full model weights by July 27, enabling other organizations to host and modify the model.

We have information that Moonshot AI distilled Anthropic’s Fable for the development of its K3 model. To do this they developed a sophisticated internal platform to conduct large scale distillation against U.S. models, allowing them to quickly switch between multiple methods of access to avoid detection. Moonshot AI has also acquired GB300-equipped servers and has accessed GB300s in Thailand, like...

Kimi K3, a 2.8T parameter model from Moonshot AI, scores 57 on the Artificial Analysis Intelligence Index and has an Elo of 1543 on the AA-Briefcase benchmark, making it second only to Fable 5. Kimi K3 costs more to run than Opus 4.8 and averages nearly an hour per task, showing a +727 improvement over Kimi K2.6.

Moonshot AI has launched Kimi K3, their most capable model to date with 2.8 trillion parameters. It is currently accessible via their website and API, with an open weight release scheduled for July 27, 2026.