24.07.2025 11:36

Proton Unveils Lumo: A Privacy-Focused AI Chatbot

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Swiss-based company Proton, renowned for its secure email service, has launched Lumo, a standalone AI assistant designed as a privacy-first alternative to offerings from major tech giants.

Lumo is capable of summarizing documents, writing code, drafting emails, and responding to web queries. Built exclusively on open-source language models, the service is hosted in Proton’s European data centers. All interactions are protected by end-to-end encryption with a "zero-access" policy, ensuring that neither Proton nor third parties can access or store user messages.

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Users can try Lumo without registration via its web client or mobile apps, though with usage limits. The Lumo Plus subscription, priced at $12.99 per month, removes these restrictions and allows for larger file uploads.

For more details, visit [Proton’s official blog].


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