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@assistant-ui/react

v0.12.22

Published

TypeScript/React library for AI Chat

Downloads

1,477,720

Vulnerabilities

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Links

Git

Maintainers

yonomyonomagentbase-botagentbase-bot

Keywords

radix-uinextjsvercelai-sdkreactcomponentsuifrontendtailwindshadcnassistantopenaiaichatchatbotcopilotai-chatai-chatbotai-assistantai-copilotchatgptgpt4gpt-4conversational-uiconversational-ai

Readme

npm version npm downloads Ask DeepWiki Weave Badge GitHub License Backed by Y Combinator

⭐️ Star us on GitHub

The UX of ChatGPT in your React app 💬🚀

assistant-ui is an open source TypeScript/React library to build production-grade AI chat experiences fast.

  • Handles streaming, auto-scrolling, accessibility, and real-time updates for you
  • Fully composable primitives inspired by shadcn/ui and cmdk — customize every pixel
  • Works with your stack: AI SDK, LangGraph, Mastra, or any custom backend
  • Broad model support out of the box (OpenAI, Anthropic, Mistral, Perplexity, AWS Bedrock, Azure, Google Gemini, Hugging Face, Fireworks, Cohere, Replicate, Ollama) with easy extension to custom APIs

Why assistant-ui

  • Fast to production: battle-tested primitives, built-in streaming and attachments
  • Designed for customization: composable pieces instead of a monolithic widget
  • Great DX: sensible defaults, keyboard shortcuts, a11y, and strong TypeScript
  • Enterprise-ready: optional chat history and analytics via Assistant Cloud

Getting Started

Run one of the following in your terminal:

npx assistant-ui create   # new project
npx assistant-ui init     # add to existing project

assistant-ui starter template

Features

  • Build: composable primitives to create any chat UX (message list, input, thread, toolbar) and a polished shadcn/ui theme you can fully customize.

  • Ship: production-ready UX out of the box — streaming, auto-scroll, retries, attachments, markdown, code highlighting, and voice input (dictation) — plus keyboard shortcuts and accessibility by default.

  • Generate: render tool calls and JSON as components, collect human approvals inline, and enable safe frontend actions.

  • Integrate: works with AI SDK, LangGraph, Mastra, or custom backends; broad provider support; optional chat history and analytics via Assistant Cloud (single env var).

Backends

  • Assistant Cloud: managed chat persistence and analytics. Deploy with the Cloud Starter template; bring any model/provider.

  • AI SDK: integration with Vercel AI SDK; connect to any supported provider.

  • LangGraph: integration with LangGraph and LangGraph Cloud; connect via LangChain providers.

  • Mastra: integration with Mastra agents/workflows/RAG; model routing via Vercel AI SDK; optional Mastra Cloud.

  • Custom: use assistant-ui on top of your own backend/streaming protocol.

Customization

assistant-ui takes a Radix-style approach: instead of a single monolithic chat component, you compose primitives and bring your own styles. We provide a great starter config; you control everything else.

Overview of components

Sample customization to make a Perplexity lookalike:

Perplexity clone created with assistant-ui

Traction

assistant-ui is the most popular UI library for building AI chat.

Hundreds of companies and projects use assistant-ui to build in-app AI assistants, including , , , , , , , , , , and more.

Chart of assistant-ui's traction

Demos

Community & Support

Backed by Y Combinator. Building something with assistant-ui? We’d love to hear from you.