Overview

• Lumo is available now on web, iOS, and Android without requiring a Proton account, offering guest users a limited number of free weekly queries.
• Registered Proton users receive encrypted chat history, support for small file uploads, and a restricted number of favorites under a strict no-logs policy.
• The Lumo Plus subscription costs $12.99 per month and unlocks unlimited chats, extended encrypted history, unlimited favorites, and larger file uploads.
• Built on open-source models such as Mistral Nemo and Nvidia OpenHands 32B, Lumo runs entirely from European servers and never uses user inputs to train its AI.
• Web search and file analysis are disabled by default to maximize privacy, and no record is kept of any uploaded documents.