assistant-ui blog · Mar 2026
Announced multi-platform support for assistant-ui, including React Native, terminal (Ink), and a redesigned Assistant Cloud / Cloud AI SDK.
Open Source React.js Library for AI Chat
Company research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
assistant-ui is a San Francisco-based, YC-backed open-source React/TypeScript company that builds production-grade AI chat interfaces and a paid hosted backend (assistant-cloud) for thread persistence, analytics, and user management.
Primary product
Open-source React/TypeScript library for AI chat interfaces, plus the assistant-cloud managed backend.
Founded
2024
Headquarters
San Francisco, California, United States
Team size
4-9 employees (public sources vary)
Industry
Software Development
Sub-industry
AI chat UI / developer tools
Offices
San Francisco, California, United States
Open Positions
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