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assistant-ui
ActiveOpen Source React.js Library for AI Chat
W25·Winter 2025·B2B·San Francisco, CA, USA·Team of 3·Founded 2024
About
assistant-ui helps frontend developers add AI chat to their apps. Our product is used by several dozen companies, like LangChain, Stack AI, Browser Use, and Athena Intelligence. We're building an open source Typescript/React library and a backend as a service, with first class integrations into popular agent frameworks like LangGraph and Vercel AI SDK.
Founders
Simon Farshid· FounderSimon is the Founder and CEO of assistant-ui. He previously co-founded READO, a book recommendation engine, and grew it to 140k MAUs. Simon started coding at age 12 and has won 8 hackathons in 5 countries.
Product launches · 1 launch
The UX of ChatGPT in your own app, connected to your own AI agents.