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Ship an AI chat MVP fast
Start from a working Next.js AI chat app starter instead of wiring authentication, model routing, and streaming from scratch.
Ship AI chat in minutes, not months
An open-source, production-ready AI chat foundation. Authentication, 120+ models, streaming, tool calling — everything you need to launch.
Access 120+ models from leading AI providers
OpenAIAnthropicGooglexAIMeta
Tech Stack
Built on the best tools
A modern, type-safe stack chosen for developer experience and production reliability.
TypeScript
Better Auth
Drizzle ORM
PostgreSQL
Redis
Vercel Blob
shadcn/ui
Tailwind CSS
Zod
tRPC
Biome
Motion
Everything you need, out of the box
Production features that would take months to build, ready in minutes.
Platform
120+ Models
Claude, GPT, Gemini, Grok, Llama — one unified interface. Switch providers mid-conversation without losing context.
Canvas
Create and edit rich documents, code files, and spreadsheets with version history, inline diffs, and real-time collaboration.
Parallel Responses
Send one message to multiple models at once. Compare quality, tone, and accuracy across providers side-by-side.
Authentication
Built-in OAuth with Google, GitHub, and Vercel. Session management, anonymous mode, and rate limiting.
MCP Support
Extend capabilities with external tools and services via the Model Context Protocol.
Branching
Fork any conversation to explore different directions without losing context.
Built-in Tools
Deep Research
Multi-step research agent that synthesizes the web into comprehensive reports.
Reasoning
Models that support reasoning can think before answering. Collapsible thinking sections and automatic model splitting.
Code Execution
Python in a secure sandbox with pandas, numpy, matplotlib, and more pre-installed.
Web Search
Real-time search with inline citations grounding every conversation.
Image Generation
Create and edit images with AI, inline in any conversation.
Video Generation
AI-powered videos with configurable aspect ratios and durations.
Why developers use ChatJS
A practical starting point for shipping AI chat products
ChatJS gives you a credible baseline for building AI chat apps fast: real product infrastructure, flexible model support, and room to grow beyond a demo.
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Prototype across multiple model providers
Compare OpenAI, Anthropic, Google, xAI, and open models behind one interface without rebuilding your app shell.
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Move from side project to production
Keep the same codebase as you add auth, observability, tool calling, document workflows, and deployment polish.
FAQ
Questions developers ask before adopting an AI chat starter
These answers cover the common evaluation points for teams looking for a Next.js AI chat template they can extend in production.
What is ChatJS?
ChatJS is an open-source Next.js AI chat app starter that gives you a production-ready foundation with authentication, streaming UI, tool calling, and support for 120+ models.
Who is ChatJS for?
It is aimed at developers and product teams building AI copilots, internal assistants, customer chat products, or multi-model playgrounds that need to ship quickly without starting from zero.
Can I use ChatJS with multiple AI providers?
Yes. The project is designed for multi-provider workflows, so you can evaluate and route across model vendors without rebuilding your frontend and app infrastructure.
Is ChatJS suitable for production use?
Yes. The starter includes the core building blocks teams usually need before launch, including auth, model integrations, streaming responses, and a modern type-safe stack.
Get started in under five minutes
Scaffold a new project with a single command. Customize it, deploy it, ship it.
Terminal
$ npx @chat-js/cli@latest create my-app