Overview

• Lumo encrypts conversations on-device under a strict no-log policy so no chat data is stored on Proton’s servers.
• User queries and responses are excluded from training any future AI models to safeguard personal information.
• The assistant runs on open-source models such as Mistral’s Nemo and Nvidia’s OpenHands 32B in Proton-controlled European data centers.
• A built-in Ghost mode permanently erases individual sessions and users can link encrypted Proton Drive files within chats.
• Access to Lumo is free without a Proton account and a $12.99 monthly subscription removes usage caps and enables encrypted history saving.