Open-source React components and runtimes for building AI chat
AI chatbots trained on your website, docs, and FAQs
Stage
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Founded
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Based in
US
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Pricing model
Open source
Freemium
Pricing
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).
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Key features
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
Train on website content, PDFs, and Q&A pairs
Streaming responses from your content
Team collaboration with role-based access
Integrations with WordPress, Shopify, Webflow, Zapier
Multiple installation methods
Google Gemini powered
What makes it different
Works with any backend through pluggable runtime adapters
Complete source code available for customization via CLI
Production-ready runtime handling streaming, tools, and state
Free MIT license with optional paid cloud persistence
Cross-platform support with single chat model
Grounded in your own content using retrieval-augmented generation
No hallucinations—chatbot only answers from approved content
Built for support teams with analytics and lead routing
Security-first design with JWT auth and injection defenses
assistant-ui