Open-source alternatives to ChatGPT

2 open-source and self-hostable projects you can use instead of ChatGPT, with license, free-edition limits and setup checked against official sources.

Open WebUIAlternative to ChatGPT
A self-hosted AI chat interface for local and cloud models, with multi-user access control.
Custom licenseSelf-hosted
154k
GitHub stars
Fully featured free edition
LibreChatAlternative to ChatGPT
A self-hosted chat interface that works with many AI model providers, with SSO and agents.
MITSelf-hosted
45k
GitHub stars
Fully featured free edition

Open WebUI — Open WebUI is a self-hosted chat interface for local and cloud models, so you decide where chats live instead of using OpenAI's hosted ChatGPT.
LibreChat — LibreChat is a free, provider-agnostic, self-hosted ChatGPT-style interface.