Moonshot AI launches new flagship Kim K3.1 Pro model with 3T parameters

Moonshot AI introduced Kimi K3.1 Pro on October 23, 2026, as a post-trained version of its earlier model. The company said it performed strongly on 3D modeling and some coding and financial-analysis evaluations, while trailing competitors on cybersecurity benchmarks.

• SiliconANGLE reported that Moonshot AI introduced Kimi K3.1 Pro on October 23, 2026; the model is an upgraded version of an algorithm released in July.· 1 source
• Kimi K3.1 Pro scored 92.7% on the BenchCAD 3D-model coding benchmark and 65.7% on Terminal-Bench 4.0; it outperformed Claude Opus 5.5 and GPT-6 Astra on OfficeQA Pro v2, according to the report.· 1 source
• The model was available through Moonshot AI’s paid cloud services at launch, with its weights planned for open-source release by November 4; the report said its cybersecurity benchmark results lagged those of Astra and Opus 5.5.· 1 source