assistant-ui

Open Source React.js Library for AI Chat

Website ↗Source: Y Combinator ↗

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.

Applied AI & ML AI agents & assistants Developer tools Cloud & infrastructure

Topics

Developer ToolsGenerative AIChatWeb Development AI Assistant B2B Infrastructure

Location: San Francisco, CA, United States
Team size: 3 employees
YC batch: Winter 2025
Status: Active
Stage: Early stage

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Questions and answers

What does assistant-ui do?

Open Source React.js Library for AI Chat

Where is assistant-ui based?

San Francisco, CA, United States

How many people work at assistant-ui?

3 employees, according to the company profile.

Has assistant-ui raised money?

There are no funding rounds for assistant-ui in our data.

What are the alternatives to assistant-ui?

Similar startups: Dexto, Zep AI, and Speko.