Lumo (AI assistant)

Lumo is a proprietary online chatbot, privacy-focused artificial intelligence assistant developed by Proton AG, which is primarily owned by the non-profit Proton Foundation. The service is designed to prioritize user privacy by running "open-source" (or "open-weights") models directly on Proton-controlled servers, operating without logs, employing zero-access encryption, and not using user data for model training.