Kimi unveils K3.1 Pro, a 3T-class open-weight model with a 1M-token context window, and K3.1 Pro Highspeed, with full weights to be released by November 4 (Kimi)

Kimi has unveiled two new models in their K3.1 series: K3.1 Pro and K3.1 Pro Highspeed. The K3.1 Pro model is the most capable 3T-class open-weight model they have released to date, featuring a 1-million-token context window and delivering significant improvements in various fields such as coding, 3D creation, financial research, and other agentic capabilities.

The K3.1 Pro Highspeed model is designed to offer 2-3 times the speed of K3.1 Pro for more responsive interactions. Both models are available on Kimi.ai, Kimi Work, Kimi Code, and the Kimi API, with the full model weights set to be released by November 4.