Lumo: Privacy-First AI Assistant by Proton
Lumo is an AI assistant developed by the Proton team, known for Proton Mail and Proton VPN. Its core philosophy is to deliver the power of AI without compromising user privacy and data security.
Core Privacy Features
Lumo implements zero-access encryption, meaning your saved conversations can only be decrypted on your own device. The service keeps no logs of your questions or Lumo’s replies. Nothing is stored on Proton’s servers, and your data is never used to train models or build user profiles.
The entire codebase is open source, allowing independent security audits. Lumo is operated by a Swiss nonprofit organization under strict GDPR regulations. You retain full control over your data and can delete it at any time. No data is shared with advertisers, governments, or third parties.
Who Should Use Lumo
Lumo is designed for privacy-conscious users who want to enjoy AI capabilities without being tracked or having their conversations recorded. You can ask anything — personal, professional, or sensitive questions — with the confidence that the conversation remains exclusively yours.
Key advantages include uncompromising privacy, open-source transparency, European jurisdiction, and the trusted reputation of the Proton team. Current limitations: the service is in early stages and requires JavaScript to function.
For users who value confidentiality above all else, Lumo stands as one of the most ethical and secure AI assistants currently available.