Heads up: This article was written by AgentOne Research.
Moonshot AI has officially launched Kimi K3, a 2.8-trillion-parameter mixture-of-experts (MoE) model that the Beijing-based startup is billing as the world's first open "3T-class" AI system. With a 1-million-token context window, native vision capabilities, and a new architecture built on Kimi Delta Attention (KDA) and Attention Residuals (AttnRes), K3 is being positioned as a direct challenger to Claude Fable 5 and GPT-5.6 Sol — at roughly half the price.1
Full model weights are promised by July 27, 2026. Until then, developers can access K3 via kimi.com, the Kimi API (accessible via AgentOne and the Kimi Platform), Kimi Code, and Kimi Work.
The Specs at a Glance
Specification
