Jan 14, 2026 13:02:00

Proton's chat AI 'Lumo,' which doesn't collect data, adds file management feature 'Projects'

Proton, a technology company known for its privacy-focused email service 'Proton Mail,' also develops the chat AI '

Lumo .' Lumo 1.3 was released on January 13, 2026, adding a feature called ' Projects ' that allows users to input various files and analyze them with AI while maintaining privacy.

Introducing Projects with Lumo 1.3 | Proton
https://proton.me/blog/lumo-1-3

Introducing Projects, the better way to focus, organize, and create - YouTube


Lumo is a chat AI that supports Japanese. Its UI is similar to ChatGPT and Gemini, but it emphasizes privacy by not collecting chat history, not using user data for AI training, and not sharing user data with others.

New Projects allows you to create individual workspaces for different tasks.

Projects allows you to load files stored in

Proton Drive and perform document analysis. All conversations within each Project are recorded in encrypted form, allowing you to resume work from where you left off at any time. Because data is managed in encrypted form, it cannot be viewed by Proton.

Lumo is a free service. You can create one project with a free account, but if you want to create multiple projects, you'll need to subscribe to the paid Lumo Plus plan. Lumo Plus costs $9.99 (approximately 1,600 yen) per month for a 12-month lump sum payment.