A private, web-based chat interface for your AI models
Free alternative to ChatGPT

Screenshot from the project’s own README · tap to enlarge
Open WebUI is a self-hosted web interface for chatting with AI. It connects to local models via Ollama or cloud models using OpenAI-compatible APIs, and it can run completely offline.
Running models offline requires a separate tool like Ollama or Docker setup.
Not sure how to install, or if it’s safe? Read the beginner guide
Yes, Open WebUI is free to self-host and use, though connecting to paid cloud AI providers will require your own API keys.
It is open source (NOASSERTION license) with 158,590 GitHub stars, last updated 2026-11-13. Download only from the official link on this page, and scan the file before installing: see the safety checklist in our beginner guide.
Yes, it can run entirely offline when connected to local AI model runners like Ollama.
Compiled from the project README. 158,590 GitHub stars (2026-11-13) · License NOASSERTION · Last update 2026-11-13