Kimi K3.1 Pro, a New Open-Weight AI Model with 1-Million-Token Context Window, Rolls Out

Kimi has announced the rollout of Kimi K3.1 Pro, the first model in its new K3.1 series, across its product family including Kimi.ai, Kimi Work, Kimi Code, and through the Kimi API. This open-weight model features a 1-million-token context window and offers substantial improvements in coding, 3D creation, financial research, and other agentic capabilities. Full model weights are slated for release by November 4, 2026.