The Open Source ChatGPT Alternative - Bring Your Own API Key

🎯 Mission: Make AI accessible to everyone by providing a free, open-source ChatGPT interface where users control their own API keys and data.

OpenGPT's clean and intuitive interface - bringing the power of ChatGPT with complete privacy and control

• 💬 ChatGPT-like Interface - Familiar and intuitive chat experience
• 🔑 Bring Your Own API Key - No subscriptions, use your OpenAI credits directly
• 🧠 Intelligent Memory System - Advanced conversation context with 4-layer memory architecture
• 📱 Fully Responsive - Perfect experience on desktop, tablet, and mobile
• ⚡ Real-time Streaming - See responses as they're generated, just like ChatGPT
• 💾 Persistent Chat History - All conversations saved locally with full control
• 🗂️ Smart Chat Management - Organize with search, rename, delete, and auto-titles

• 🎯 4-Layer Architecture - Immediate, recent, historical, and important context layers
• 📊 Token Optimization - 85-90% token reduction for long conversations
• 🔄 Automatic Summarization - Intelligent compression of conversation history
• 💡 Context Preservation - Never lose important details from past messages
• ⚡ Infinite Scalability - Handle 500+ message conversations efficiently

• 🔐 Encrypted Local Storage - Your API keys are encrypted and stored locally
• 🚫 Zero Data Collection - We don't see, store, or analyze your conversations
• 🏠 Completely Local - All processing happens in your browser
• 🛡️ XSS Protection - Built-in security against common web vulnerabilities
• 🔒 No Server Logging - Your conversations never touch our servers

• 🌙 Beautiful Dark Theme - Sleek, modern design that's easy on the eyes
• 🎭 Smooth Animations - Polished micro-interactions throughout
• ⌨️ Keyboard Shortcuts - Power user friendly with Enter to send
• 📄 Markdown Support - Rich text rendering with code highlighting
• 📎 File Upload - Support for text, code, and document files
• 🎛️ Model Selection - Choose from GPT-4, GPT-3.5-turbo, and more

• Node.js 18+ - Download here
• OpenAI API Key - Get yours here

1. Clone the repository

git clone https://github.com/royxlab/OpenGPT.git
cd OpenGPT

2. Install dependencies

npm install
# or
yarn install
# or
pnpm install

3. Run the development server

npm run dev
# or
yarn dev
# or
pnpm dev

4. Open your browser

   Navigate to http://localhost:3000

5. Add your API key

   Click the settings icon and securely add your OpenAI API key

That's it! Start chatting with AI while maintaining complete control over your data.

// Your API key workflow:
1. Enter API key in settings →
2. Encrypted with AES-256 →
3. Stored locally in browser →
4. Never sent to our servers →
5. Used directly with OpenAI API

// 4-Layer Memory System:
Layer 1: Immediate Context (5-8 messages)    // 800-1200 tokens
Layer 2: Recent Chunks (summarized)          // 600-900 tokens
Layer 3: Historical Summary (compressed)     // 400-600 tokens
Layer 4: Important Messages (preserved)      // 200-400 tokens

Total: ~3k tokens (regardless of conversation length)

// Local Browser Storage:
├── Encrypted API Keys
├── Chat Messages (by conversation ID)
├── Memory Context (intelligent summaries)
├── User Preferences
└── No server-side data (100% local)

• Framework: Next.js 15+ (App Router)
• Language: TypeScript (Strict Mode)
• Styling: Tailwind CSS + shadcn/ui
• State Management: React Hooks + Local Storage
• Memory System: Custom intelligent context management
• Security: AES-256 encryption for API keys
• Deployment: Vercel-ready with Docker support

├── app/                    # Next.js App Router
│   ├── api/               # API routes (chat, models)
│   ├── globals.css        # Global styles
│   └── page.tsx          # Main chat interface
├── components/            # React components
│   ├── ui/               # shadcn/ui components
│   ├── chat-sidebar.tsx  # Chat management
│   ├── sidebar.tsx       # Expanded sidebar
│   ├── mini-sidebar.tsx  # Collapsed sidebar
│   └── model-selector.tsx # AI model selection
├── lib/                  # Utility functions
│   ├── chat-memory.ts    # Memory system
│   └── utils.ts         # Helper functions
└── public/              # Static assets

All models from OpenAI are supported

const DEFAULT_CONFIG = {
  model: "gpt-4o-mini",
  temperature: 0.7,
  streaming: true,
  memoryEnabled: true,
  autoTitle: true,
};

1. Click the button above
2. Fork the repository
3. Deploy automatically
4. Start using immediately!

# Build for production
npm run build

# Start production server
npm start

# Build the image
docker build -t opengpt .

# Run the container
docker run -p 3000:3000 opengpt

Perfect for complete privacy! Deploy on your own server:

# Clone and build
git clone https://github.com/royxlab/OpenGPT.git
cd OpenGPT
npm install
npm run build

# Run with PM2 (recommended)
pm2 start npm --name "opengpt" -- start

We welcome contributions! Here's how you can help:

Found a bug? Please create an issue with:

• Clear description of the problem
• Steps to reproduce
• Expected vs actual behavior
• Screenshots if applicable

Have an idea? We'd love to hear it! Please include:

• Clear description of the feature
• Use case and benefits
• Any implementation ideas

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Make your changes
4. Test thoroughly
5. Commit with clear messages: git commit -m 'Add amazing feature'
6. Push to your branch: git push origin feature/amazing-feature
7. Open a Pull Request

• Use TypeScript for all new code
• Follow existing code style and patterns
• Add comments for complex logic
• Test your changes thoroughly
• Update documentation if needed

• 💬 GitHub Discussions: Ask questions & share ideas
• 🐛 Issues: Report bugs
• 📧 Email: [email protected]

❓ Is my API key safe? ✅ Yes! Your API key is encrypted and stored only in your browser. We never see it.

❓ Do you collect my conversations? ✅ No! All conversations stay on your device. Zero data collection.

❓ Can I use this offline? ❌ You need internet for API calls to OpenAI, but your data stays local.

❓ Which models are supported? ✅ All OpenAI models: GPT-4, GPT-4 Turbo, GPT-4o, GPT-3.5 Turbo, and more.

❓ Can I export my chats? ✅ Yes! Your chats are saved locally and can be backed up from browser storage.

❓ Is this really free? ✅ Completely free! You only pay OpenAI for your API usage.

• Multi-Provider Support (Anthropic, Google, Cohere)
• Voice Input/Output with speech recognition
• Plugin System for custom extensions
• Team Collaboration features
• Advanced Prompt Library with templates
• Data Export/Import (JSON, Markdown, CSV)
• Mobile App (React Native)
• Offline Mode with local models

This project is licensed under the MIT License - see the LICENSE file for details.

• ✅ Free to use for any purpose
• ✅ Free to modify and distribute
• ✅ Free for commercial use
• ✅ No restrictions on usage

• OpenAI - For the incredible GPT models
• Vercel - For Next.js and amazing deployment platform
• shadcn - For beautiful UI components
• The Open Source Community - For inspiration and contributions

"AI should be accessible to everyone, with complete privacy and control." - OpenGPT Mission

Last updated: January 2025