Moonshot AI Releases Kimi K3.1 Pro, First Model in New K3.1 Series

Moonshot AI launched Kimi K3.1 Pro and a faster Highspeed variant on October 24, 2026, marking its most advanced 3T-class open-weight model with a 1M-token context window. The models show strong benchmark performance, surpassing GPT-6 Astra in coding tasks and nearing Claude Opus 5.5 in 3D reconstruction and financial analysis.