Kimi (AI)

Kimi is an artificial intelligence (AI) chatbot and series of large language models developed by Chinese company Moonshot AI. Its Kimi K3, released July 2026, is the largest open weights model ever, at 2.8 trillion parameters. Moonshot releases the Kimi series of open weights large language models, available via web, API, and the Kimi Code command-line agent. These are capable of multimodal image and video input, and their "Swarm" feature utilizes hundreds of sub-agents for deep research. Kimi K3's performance led the AI industry in China and rivalled frontier models from US companies OpenAI and Anthropic. Despite its open weights, K3's custom license requires revenue sharing of up to 30% for inference providers generating over US$20 million annually. Kimi K2, a one-trillion parameter model, released July 2025, and followed by K2.5 in January 2026, and K2.6 in April. Kimi models have been used as the basis or for post-training of US models, including Thinking Machines Lab's Inkling, Cursor's Composer 2, and Cognition AI's Devin AI. In September 2026, Anthropic accused Moonshot of covertly routing Kimi requests to its Claude models and distilling Claude via these responses.