Kimi K3.1 Pro Tech Blog: Advancing Open Intelligence

www.kimi.aiSaved Oct 24, 2026

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Kontxt KontxtOct 24th, 2026

Moonshot AI announces Kimi K3.1 Pro, a 3T-class open-weight model with a 1-million-token context window, alongside a faster Highspeed version. The company reports strong performance across coding, 3D modeling, financial research, and agentic tasks, including 65.7% on Terminal-Bench 4.0 and 92.7% on BenchCAD with tools. It highlights a reduction in claim-level hallucination rates from 23.4% to 8.3% versus K3 and describes targeted removal of cyber-related training data to reduce offensive capability. The model is available across Kimi products and API, with full weights scheduled for release by Nov. 4, 2026.