About
Assistant-ui is an open-source React toolkit for building production-ready AI chat experiences. It offers a ChatGPT-style UI with composable components and state management for streaming, interruptions, and multi-turn conversations, integrating with various LLM providers and backends. The company serves developers looking to ship AI chat directly into their applications.
Key facts
At-a-glance profile data
- Website
- assistant-ui.com
- Headquarters
- San Francisco, United States
- Founded
- 2024
- Total funding
- $500K (Seed)
- Business model
- B2B
Assistant-ui pricing
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 200 MAU included, Thread persistence and history, Thread list and auto-generated titles |
| Pro | $50 / month | 500 MAU included, $0.10 per additional MAU, Everything in Free |
| Enterprise | Contact sales | Custom MAU pricing, Your own backend integration, Data replication |
MAU means monthly active users who send at least one message. Viewers who never send a message do not count. B2C pricing available via [email protected]. Contact sales for Enterprise.
Plans as published by Assistant-ui, checked September 2026. Current prices on assistant-ui.com
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 1 Jan 2025 | Seed | $500K | Y Combinator |
Tech stack
Detected on assistant-ui.com, last scanned 22 Sept 2026. Run your own scan
- Frontend
- Next.js, Tailwind CSS
- Payments
- Stripe
- CMS / Builders
- Ghost
- CDN
- Cloudflare, Vercel
- Email provider
- Google Workspace
- Status page
- BetterStack
Frequently asked
How much funding has Assistant-ui raised?
Assistant-ui has raised a total of $500K in funding. The most recent round on record is Seed.