Assistant UI is an open-source TypeScript/React library for rapid, production-ready AI chat UIs. It delivers composable primitives, streaming, auto-scroll, accessibility, and theme customization, enabling developers to craft polished chat experiences that integrate with multiple AI models and backend services. Built for real-time interactions and excellent DX, it lets teams ship reliable AI chat apps faster while handling UI complexity.

The Assistant UI is a powerful, open-source TypeScript/React library designed to facilitate the rapid development of AI chat applications. Tailored for developers seeking to create production-grade chat experiences, this library encompasses a comprehensive set of features that simplify the complexities of building chat interfaces. With an emphasis on customization, accessibility, and real-time user interactions, Assistant UI enables developers to focus on delivering an exceptional user experience while handling the underlying technical challenges. The theme is built with composable primitives inspired by popular design systems, allowing developers to create highly tailored chat interfaces. Whether it’s integrating with various AI models or leveraging existing backend systems, Assistant UI is designed to work seamlessly with a diverse technology stack. This library not only provides a polished user experience but also supports essential functionalities such as streaming, auto-scrolling, and accessibility, making it an ideal choice for modern AI-driven applications.