Kimi K3
Flagship multimodal reasoning LLM for long-horizon coding, knowledge work, and tool-rich agent workflows
Kimi K3
Flagship multimodal reasoning LLM for long-horizon coding, knowledge work, and tool-rich agent workflows
Kimi K3 Overview
Kimi K3 is Moonshot AI's flagship model for frontier reasoning, software engineering, and knowledge-intensive work. It combines a 1M-token context window with native visual understanding, configurable reasoning effort, structured outputs, tool calling, and strong long-horizon execution across large codebases and multi-step research workflows. It is well suited to demanding coding agents, deep research systems, document-heavy assistants, and other production applications that need sustained reasoning over very large contexts.
More models from Moonshot AI
Kimi K3.1 Pro is Moonshot AI's flagship open-weight model, a post-trained successor to Kimi K3 built for coding, agent workflows, and knowledge-intensive work. It pairs a 1M-token context window with always-on reasoning at configurable effort, image understanding, structured outputs, and tool calling, and improves on K3 in coding, 3D modeling, financial analysis, and factual accuracy. It is well suited to coding agents that build full projects and games, scripted 3D and CAD modeling in tools such as Blender, and research assistants that work through financial documents and spreadsheets.