Lumo is Proton’s AI assistant for asking questions, creating and organizing information, analyzing data, and generating images. Chats are stored with zero-access encryption, and Proton says conversations are not used to train AI models.
Last updated: Aug 31, 2026
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Saved conversations use zero-access encryption so Proton cannot read them.
Proton says Lumo does not use conversations to train AI models, and its code is open source.
Create and refine images from text prompts while keeping conversations private.
Group related chats and information in Projects for more organized work.
Use web search when current information is needed.
Use Lumo on the web or through its official iOS and Android apps.
| Plan | Price | Highlights |
|---|---|---|
| Lumo Free | Free | Limited model usage
|
| Lumo Plus | $9.99 | Expanded model usage
|
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