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Deploy background agents, connect your favorite services (Gmail, Calendar, Notion, GitHub), and get things done through natural conversation.\n\n![OS Chat — Open-source AI chat app (oschat.ai)](./public/opengraph-image.png)\n\n## 🚀 Why OS Chat?\n\n- **🔓 Open Source T3 Chat Alternative** - Get all the speed and multi-model access of T3 Chat, but open source, self-hostable, and enhanced with background agents and service integrations\n- **🤖 Your AI Personal Assistant** - More than chat - deploy background agents, automate workflows, and manage your digital life\n- **🔗 Connect Everything** - Direct integration with Gmail, Calendar, Notion, GitHub, Slack, and 10+ more services via Composio\n- **⏰ Smart Automation** - Deploy background agents with email notifications - let your assistant work while you sleep\n- **🧠 50+ AI Models** - Access the latest from OpenAI, Anthropic, Google, Meta, and more in one interface\n- **🎯 Truly Personal** - Customize personality traits, personal context, and preferences for tailored interactions\n- **👤 Multi-Profile Setup** - Use separate profiles for Work, Personal, Study, etc. with isolated chats and settings (up to 5 total)\n- **🔒 Privacy-First** - Open source, self-hostable, with encrypted API key storage\n\n## ✨ Features\n\n### ⏰ Background Agents \u0026 Automation\n\n- **Smart Background Agents** - Deploy AI agents to run one-time, daily, or weekly with timezone awareness\n- **Email Notifications** - Get notified when your background agents complete successfully\n- **Automated Workflows** - Let your AI assistant handle routine work while you focus on what matters\n- **Execution History** - Track and monitor all your background agent runs with detailed logs\n\n### 🔗 Service Connectors \u0026 Integrations (via Composio)\n\n- **Gmail Integration** - Access, read, and manage your email messages directly through chat\n- **Google Calendar** - View, create, and schedule calendar events seamlessly\n- **Google Drive \u0026 Docs** - Access files, create documents, and collaborate on projects\n- **Notion Workspace** - Read and write to your Notion pages and databases\n- **GitHub Management** - Manage repositories, issues, and pull requests\n- **Slack, Linear, X (Twitter)** - And 10+ more services\n\n### 🤖 AI \u0026 Models\n\n- **50+ AI Models** - Access OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, xAI, Moonshot, Z.AI, MiniMax, and Qwen models\n- **Multi-modal Support** - Text, images, and reasoning across all supported models\n- **Image Generation** - Create high-quality images with GPT Image 1.5, Nano Banana Pro, Imagen 4, and Flux Schnell\n- **Reasoning Models** - View AI thinking process with o3, Claude 4, Gemini Thinking, and DeepSeek R1\n- **Web Search Integration** - Real-time internet search using Exa, Tavily, and Brave APIs\n\n### 💬 Chat Management\n\n- **Profile-Based Spaces** - Keep separate threads and preferences per profile (for example: Work vs Personal)\n- **Up to 5 Profiles** - 1 default profile plus 4 additional profiles per account\n- **Smart Organization** - Automatic grouping by Today, Yesterday, Last 7 Days, etc.\n- **Pinned Chats** - Keep important conversations at the top\n- **Chat Branching** - Create alternative conversation paths from any assistant message\n- **Advanced Search** - Full-text search across chat history with content snippets\n- **Data Portability** - Export/import chat history with full data control\n\n### 🎨 Interface \u0026 Experience\n\n- **Responsive Design** - Beautiful interface that works on desktop and mobile\n- **Theme System** - Beautiful light and dark modes with smooth transitions\n- **Keyboard Shortcuts** - Quick access with ⌘+K (search), ⌘+Shift+O (new chat), ⌘+B (toggle sidebar)\n- **Real-time Streaming** - Instant message streaming for immediate responses\n\n## 🤖 Available Models\n\n### 💬 Text \u0026 Chat Models\n\n- **OpenAI**: GPT-5.2, GPT-5.2 Pro, GPT-5.1, GPT-5, GPT-5 Mini/Nano, GPT OSS 20B/120B, o3, o4 Mini\n- **Anthropic**: Claude 4.5 Opus, Claude 4.5 Sonnet, Claude 4.5 Haiku (with reasoning)\n- **Google**: Gemini 3 Pro/Flash, Gemini 2.5 Pro/Flash (with thinking)\n- **Meta**: Llama 4 Maverick, Llama 4 Scout\n- **DeepSeek**: V3.2, V3.1, R1 (with reasoning variants)\n- **xAI**: Grok 4.1 Fast, Grok 4, Grok 3\n- **Moonshot**: Kimi K2, Kimi K2 Thinking\n- **Z.AI**: GLM 4.7, GLM 4.6, GLM 4.5 (with thinking)\n- **MiniMax**: M2.1, M2\n- **Qwen**: Qwen3 Coder, Qwen3 235B\n\n### 🎨 Image Generation\n\n- **OpenAI**: GPT Image 1.5\n- **Google**: Nano Banana Pro, Nano Banana, Imagen 4, Imagen 4 Ultra\n- **Fal**: Flux Schnell\n\n## 🛠️ Built with\n\n- [TanStack Start](https://tanstack.com/start) - Full-stack React framework with SSR\n- [TanStack Router](https://tanstack.com/router) - Type-safe file-based routing\n- [TanStack Query](https://tanstack.com/query) - Powerful data fetching and caching\n- [Vite](https://vite.dev) - Next-generation frontend tooling\n- [Nitro](https://nitro.build) - Universal server engine\n- [React 19](https://react.dev) - UI library with latest features\n- [t3-env](https://env.t3.gg) - Type-safe environment variables with Zod\n- [Vercel AI SDK v5](https://vercel.com/blog/introducing-the-vercel-ai-sdk) - Model integration and streaming\n- [Convex](https://convex.dev) - Real-time backend, authentication, and database\n- [Composio](https://composio.dev) - Service integrations (Gmail, Calendar, Notion, GitHub, etc.)\n- [shadcn/ui](https://ui.shadcn.com) - Modern component library for UI\n- [Framer Motion](https://motion.dev) - Smooth animations and transitions\n- [Zustand](https://zustand.docs.pmnd.rs) - Lightweight state management\n- [Cloudflare R2](https://developers.cloudflare.com/r2/) - Object storage for file attachments\n- [Tailwind CSS v4](https://tailwindcss.com) - Utility-first CSS framework\n- [Ultracite](https://ultracite.io) - Lightning-fast linting with Biome\n\n## 🚀 Getting Started\n\nSee the **[Installation Guide](./docs/installation.md)** for complete setup instructions.\n\n### Quick Start\n\n```bash\n# Clone and install\ngit clone https://github.com/ajanraj/OpenChat.git\ncd OpenChat \u0026\u0026 bun install\n\n# Set up Convex backend\nbunx convex login \u0026\u0026 bunx convex dev --once\n\n# Configure environment\ncp .env.example .env\n\n# Run development server\nbun dev\n```\n\nVisit [http://localhost:3000](http://localhost:3000) to see OS Chat running locally!\n\n## 📜 Development Commands\n\n| Command             | Description                            |\n| ------------------- | -------------------------------------- |\n| `bun dev`           | Start development server on port 3000  |\n| `bun build`         | Build for production                   |\n| `bun test`          | Run tests with Vitest                  |\n| `bun run lint`      | Run Ultracite linter                   |\n| `bun run typecheck` | Run TypeScript type checking with tsgo |\n| `bunx convex dev`   | Run Convex development server          |\n\n## 🗺️ Roadmap\n\n- **Projects \u0026 Workspaces** - Organize your chats into projects and workspaces\n- **MCP integration** - Model Context Protocol support for enhanced AI capabilities\n- **Stream Resuming** - Resume interrupted streams using Redis\n\n## 🤝 Contributing\n\nWe welcome contributions! See the [Installation Guide](./docs/installation.md) to set up your development environment.\n\n1. Fork the repository\n2. Create your feature branch (`git checkout -b feature/amazing-feature`)\n3. Run `bun run lint` and `bun run format` before committing\n4. Push to the branch and open a Pull Request\n\n### Areas We'd Love Help With\n\n- Stream resuming using Redis\n- Performance optimizations\n- MCP integration\n- Additional service connectors\n\n## ⚠️ Notes\n\n**Current Status**: Beta Release - OS Chat is actively developed with regular feature updates.\n\n**Compatibility**: Built with TanStack Start, Vite, and Nitro for modern full-stack React architecture.\n\n**Privacy**: All data is processed securely with user control over exports, imports, and data management.\n\n---\n\nCopyright 2025 Ajan Raj. 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