Introducing Kimi K3.1 Pro
Moonshot's Kimi K3.1 Pro is now on the Kimi API, with full weights promised by November 4, 2026, and a faster 'Highspeed' tier at twice the price. At $2 per million input tokens and $10 per million output, it costs the same as GPT-6.1 Sol and half as much as Claude Opus 5.5, and Moonshot's own benchmarks put it roughly level with Opus 5.5 and GPT-6 Astra.