Moonshot AI releases flagship Kimi K3.1 Pro model

Moonshot AI has launched Kimi K3.1 Pro, a flagship large language model that upgrades an algorithm released by the company in July 2026. SiliconANGLE AI reports that the model outperforms Claude Opus 5.5 and GPT-6 Astra on certain tasks, while The Economic Times reports that the Chinese startup plans to release full model weights in November. [1][5]

Outlets differ on the parameter count of the new model. SiliconANGLE AI and SiliconANGLE report that the model has 3 trillion parameters, upgraded from an architecture containing 896 individual neural networks that activates 16 at any given time. Conversely, MarkTechPost reports that Kimi K3.1 Pro is a mixture-of-experts model with 2.8 trillion total parameters and 104 billion active parameters. [1][2][3]

According to MarkTechPost, the model features a 1 million token context window and scores 65.7 percent on Terminal-Bench 4.0. The outlet notes that API pricing is set at 2 dollars per million input tokens and 10 dollars per million output tokens. The Cryptonomist reports that the model scored 64.4 on a financial test, while digitaltoday notes its performance in finance analysis and 3D modelling. [2][4][6]

Moonshot AI was founded in Beijing in March 2023 by Yang Zhilin, Zhou Xinyu, and Wu Yuxin. Reaching a valuation of 35 billion dollars by July 2026, it is supported by major investors including Alibaba Group and Tencent. MarkTechPost and The Economic Times both report that open weights for the new model will be released by November 2026. [2][5][8]