Stop rebuilding the same AI chat infrastructure. ChatJS gives you a production-ready foundation with authentication, 120+ models, streaming, and tools so you can focus on what makes your app unique.
Create a new ChatJS app:
npx @chat-js/cli@latest create my-appThe CLI walks you through gateway, features, and auth choices, generates chat.config.ts, and lists the env vars required by your selections.
- 120+ Models: Claude, GPT, Gemini, Grok via one API
- Auth: GitHub, Google, anonymous. Ready to go.
- Attachments: Images, PDFs, docs. Drag and drop.
- Resumable Streams: Continue generation after page refresh
- Branching: Fork conversations, explore alternatives
- Sharing: Share conversations with public links
- Web Search: Real-time web search integration
- Image Generation: AI-powered image creation
- Code Execution: Run code snippets in sandbox
- MCP: Model Context Protocol support
- Next.js - App Router, React Server Components
- TypeScript - Full type safety
- AI SDK - The AI Toolkit for TypeScript
- AI Gateway - Unified access to 120+ AI models
- Better Auth - Authentication & authorization
- Drizzle ORM - Type-safe database queries
- PostgreSQL - Primary database
- Redis - Caching & resumable streams
- Vercel Blob - Blob storage
- Shadcn/UI - Beautiful, accessible components
- Tailwind CSS - Styling
- tRPC - End-to-end type-safe APIs
- Zod - Schema validation
- Zustand - State management
- Motion - Animations
- t3-env - Environment variables
- Pino - Structured Logging
- Langfuse - LLM observability & analytics
- Vercel Analytics - Web analytics
- Biome - Code linting and formatting
- Ultracite - Biome preset for humans and AI
- Streamdown - Markdown for AI streaming
- AI Elements - AI-native Components
- AI SDK Tools - Developer tools for AI SDK
apps/chat: Next.js chat appapps/docs: Mintlify docspackages/cli: interactive scaffold CLI
bun dev:chat: run chat appbun dev:docs: run docsbun lint: run workspace lintbun test:types: run chat app typecheck
Visit chatjs.dev/docs to view docs.
Apache-2.0