Kimi K3.1 Pro

Kimi K3.1 Pro is Moonshot’s most capable 3T-class model, a post-trained update to K3 with a 1M-token context. Moonshot reports gains in coding, 3D modeling, finance and agentic tasks, including 65.7% on Terminal-Bench 4.0. A Highspeed version runs 2-3x faster. It’s live on Kimi.ai, the apps, Kimi Code and the API. Moonshot says open weights are due by November 4, 2026.