Lumo is a privacy-first AI assistant developed by Proton (the makers of Proton Mail and Proton VPN). It provides encrypted, private AI interactions with a strict no-logs approach. The system enables users to leverage generative AI capabilities while maintaining complete control over their data, including secure file uploads directly from Proton Drive.
Key Features
- Zero-Access Encrypted Chat: Only the user can read saved conversations; Proton has no access to the content.
- No-logs Policy: Proton does not retain transcripts of your prompts or responses.
- Open-source and Transparency: Utilizes open-source components and privacy-friendly open models to increase trust.
- Encrypted File Upload Support: Secure analysis of private documents within the AI environment.
- Privacy-focused Web Search: Optional web search integration that emphasizes anonymity (can be toggled on/off).
Main Use Cases
- Summarizing Sensitive Documents: Analyzing legal or medical files while preserving total confidentiality.
- Drafting Professional Communications: Editing emails and reports within an encrypted and secure environment.
- Coding Assistance: Debugging, code generation, and technical explanations within a private workspace.
- Safe Translation: Refining and translating language without exposing content to third parties.
- Project Planning: Generating task breakdowns and ideas with a privacy-preserving assistant.
Pricing Plans
- Free Plan: Limited web access with a “Ghost Mode” option that does not save chat history.
- Lumo Plus Plan: $12.99/month. Includes unlimited chats, full encrypted history, large file uploads, and favorites.
- Lumo for Business Plan: Custom pricing. Includes encrypted team access, advanced models, administrative controls, and enterprise support.
Pros and Cons
Pros:
- Highest level of privacy and security in the AI market.
- Seamless integration with the secure Proton ecosystem.
- High transparency through the use of open-source models.
Cons:
- Privacy-focused models may sometimes be less powerful than massive proprietary models.
- The Free plan is highly limited in terms of storage and history.
- Fewer external plugins and integrations compared to larger competitors.
FAQ
- Can Proton see the files I upload? No, all files and conversations are end-to-end encrypted; only you hold the key to view them.
- What is Ghost Mode? It is a browsing mode where the system retains no record of your interaction once the window is closed.
Screenshots and Demo
The Lumo interface features a clean, purple-toned design consistent with Proton’s aesthetic. The central chat window includes an indicator at the top confirming encryption status. At the bottom of the input bar, there is a dedicated button for importing files from Proton Drive. The sidebar displays encrypted history and the “Privacy Toggle” settings for web search control.