AI Chatbots & Assistants
assistant-ui
Open-source React components and runtimes for building AI chat
- 0community votes
- 53DR by Ahrefs +1 (up) since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 8 Nov 2026.
React library for building AI chat interfaces with streaming, tools, and persistence. MIT licensed, free to use with optional hosted persistence.
What it is
assistant-ui is an open-source React library for building AI chat interfaces and conversational AI agents. It provides components and a runtime that handle streaming, tools, reasoning, voice, and other features for production chat applications.
The library is MIT licensed and free to use with any backend. It supports multiple platforms including React, Vue, React Native, and Ink. Developers can customize every surface of the UI by composing components, and a CLI copies source code into projects for full control.
assistant-ui integrates with AI SDK, LangGraph, LangChain, and custom backends through adapters. For optional hosted persistence of threads, history, and user authentication, the company offers assistant-cloud with paid tiers.
Systems
- Streaming support for real-time chat output
- Tool execution and integration
- Thread persistence and history
- Voice support
- Generative UI rendering
- Message attachments
- Conversation branching
- Multi-platform support (React, Vue, React Native, Ink)
- Runtime adapter support (AI SDK, LangGraph, LangChain)
- Fully customizable component composition
Pricing
Pricing model: Open source
The core library is free and MIT licensed. assistant-cloud offers: Free ($0, 200 MAU included), Pro ($50/mo, 500 MAU included plus $0.10 per additional MAU), Enterprise (custom MAU pricing, contact for details).
Want to see what assistant-ui does next? Follow them for milestones, new products and stories by email.
assistant-ui metrics
Signal readout for assistant-ui.com: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 53 Domain Rating +1 (up) since last check
- 12 Trust Flow no change since last check
- 39 Citation Flow no change since last check
- 572 Referring domains no change since last check
- 4,466 External backlinks no change since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 8 Nov 2026. Strongest signal topic: Computers/Programming/Languages (12). Majestic signal 7 Nov 2026, signal shifted 7 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
assistant-ui domain signal
Show the signal details
Public RDAP record, last read 13 Nov 2026, 08:33 UTC.
- Domain age 2 years
- Registered
- Expires
- Registrar Spaceship, Inc.
- DNSSEC Signed
assistant-ui post-launch signal
The record for assistant-ui after its launch on Nexora Launch (7 November 2026), from the readings we keep.
- 53 Domain Rating (Ahrefs) +1 (up) since launch
at launch: 52 (7 Nov 2026); latest: 13 Nov 2026 - 12 Trust Flow (Majestic)
first measured 7 Nov 2026 - 572 Referring domains (Majestic)
first measured 7 Nov 2026
Day 5 since launch. Next receipt: day 30, 7 Dec 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
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Quick answers
- Do I need Cloud to use the library?
- No. assistant-ui is a free TypeScript and React library that you can use with your own backend. Cloud persistence is optional, not required.
- What counts as an MAU?
- A monthly active user is someone who sends at least one message in that month. Viewers who never send a message do not count.
- Can I bring my own database?
- Yes. The open source library lets you persist threads yourself. Enterprise Cloud also includes integration with your own backend, plus replication and on-premises deployment.
assistant-ui has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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