Moonshot AI
Kimi K3 Officially Released: An Open Frontier Model with Native Vision and Million-Token Context
Kimi K3 is Moonshot AI's flagship model designed for long-horizon coding, knowledge work, and reasoning, featuring native visual understanding and a context window of up to 1M tokens.

Kimi K3 is built on architectural updates such as Kimi Delta Attention and Attention Residuals, focusing on long-cycle software engineering, knowledge work, and agent execution.
Official documentation indicates that K3 is available across Kimi.com, Kimi Work, Kimi Code, and Kimi API, offering varying levels of reasoning intensity.
KEY HIGHLIGHTS
Key highlights
2.8T total parameters
Native visual understanding
Up to 1M token context