Top 6 Open-Source ChatGPT Alternatives You Can Self-Host
The best open-source alternatives to ChatGPT that you can run on your own infrastructure — with features, model support, and deployment guides.
ChatGPT is convenient, but it sends your data to OpenAI's servers, charges per token, and limits customization. These six open-source alternatives give you a premium chat experience on your own infrastructure with zero API costs for local models.
1. Open WebUI — Best for Ollama Users
Purpose-built for Ollama with a ChatGPT-like UI. Supports chat history, model switching, RAG, voice input, and image generation. The most polished local AI chat experience available.
2. LibreChat — Best for Multi-Provider
Connect to OpenAI, Anthropic, Google, Azure, and Ollama simultaneously. Conversation branching, plugins, and admin panel for team management. The most feature-rich option.
3. AnythingLLM — Best for RAG
Built-in document management with automatic chunking and embedding. Upload PDFs, docs, and websites, then chat with your data. Supports multiple LLM providers and vector databases.
4. Dify — Best for AI App Building
More than a chat interface — Dify lets you build AI applications with visual workflows, prompt engineering tools, and API endpoints. Ideal for teams building AI-powered products.
5. Flowise — Best for Visual AI Chains
Drag-and-drop LangChain/LlamaIndex builder. Create complex AI chains visually without coding. Perfect for prototyping RAG pipelines and agent workflows.
6. DocsGPT — Best for Documentation
Purpose-built for chatting with documentation. Feed it your docs, and it answers questions with source citations. Every service listed here is one click away in better-openclaw.