assistant-ui

Winter 2025

Open Source React.js Library for AI Chat

Developer ToolsGenerative AIChatWeb DevelopmentAI Assistant

About Company

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.

Active Founders

Simon Farshid

Founder

Simon 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.

Company Facts

Visit Website

LocationSan Francisco, CA, USA

Team Size3

Founded2025

StatusActive