Mistral Small 4

Fast, multimodal, reasoning AI in one open model

Mistral Small 4 is a unified open-weight AI model from Mistral AI that combines fast chat, deep reasoning, coding, and multimodal capabilities in one system. Built with a Mixture-of-Experts architecture and a 256k context window, it delivers high performance with strong efficiency. Developers can adjust reasoning depth depending on the task, making it ideal for building assistants, coding agents, and AI applications at scale.