Moonshot AI Unveils Kimi K3.1 Pro, a New Open-Weight AI Model

Moonshot AI has launched Kimi K3.1 Pro, the inaugural model in its K3.1 series, along with a faster variant, Kimi K3.1 Pro Highspeed. Described as its most capable 3T-class open-weight model, Kimi K3.1 Pro features a 1-million-token context window. The Highspeed version offers two to three times greater speed with identical capabilities, and the model is available across the Kimi product family and API.