Lumo by Proton

Meet Lumo, the zero-access encrypted AI assistant by Proton that does not track or record your conversations. Ask me anything — it's confidential. Lumo gives you the benefits of AI with top privacy and security. Free to start, no account required.

Lumo by Proton is a privacy-first AI assistant designed to keep conversations confidential and secure. Unlike mainstream AI tools that harvest user data, Lumo employs zero-access encryption, ensuring no logs of queries or responses are stored or shared. Developed by the creators of Proton Mail and Proton VPN, it operates under a Swiss nonprofit committed to privacy, never monetizing user data. The service is free to use without requiring an account, and all saved chats remain encrypted, accessible only on the user’s device. Fully open-source, Lumo’s code allows independent verification of its privacy measures. Compliant with GDPR, it offers users full control over their data, reinforcing trust in an AI assistant that prioritizes security over profit.