# Open WebUI > Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform designed to operate entirely offline. It supports various LLM runners like Ollama and OpenAI-compatible APIs, with built-in inference engine for RAG, making it a powerful AI deployment solution. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform designed to operate entirely offline. It supports various [LLM](https://wiki.g15e.com/pages/Large%20language%20model.txt) runners like and -compatible APIs, with built-in inference engine for [RAG](https://wiki.g15e.com/pages/Retrieval-augmented%20generation.txt), making it a powerful AI deployment solution. https://github.com/open-webui/open-webui