Proton, the Swiss tech company that is well known for its privacy-focused services such as Proton Mail, Proton VPN, and Proton Drive, has newly launched a new AI assistant called Lumo, which emphasizes user privacy by ensuring that conversations are not recorded and prompts are not used for training. It aligns well with Proton’s mission, which became a non-profit in June 2024.
Proton confirms that Lumo is made to assess users without tracking them or sharing data. It avoids hidden risks that often come with closed-source code. Yet, Lumo operates on open-source large language models (LLMs) and uses Proton’s open-source encryption. To demonstrate its commitment to transparency, Proton has made Lumo’s entire source code publicly available, allowing the community to see how it works.
Lumo can design its default settings, and these include not performing online searches, automatically deleting all chats when the session ends, and not storing conversations on the server. Proton shows that, unlikemany AI companies that keep user conversation records on their servers, Lumo does not save any server-side logs. Any saved chats can only be decrypted on users’ devices, providing extra security.
Users can access the new AI assistant through its website at lumo.proton.me, and there is also a dedicated app for Android and iOS. Proton has divided Lumo’s service into three different account tiers to meet various user needs.
The Guest tier lets users try Lumo without a Proton account, but it has a weekly limit on the number of questions and doesn’t save conversation histories. The free tier requires a Proton account and allows more questions, file uploads, and basic chat history encryption.
The most extensive option is the Plus tier, which costs $12.99 a month. This premium tier offers unlimited chats, longer encrypted chat history, the ability to mark as favorites, and options to upload multiple large files.
At launch, Lumo can communicate in English, French, German, Spanish, and Italian. Proton plans to add more languages, aiming to make the tool accessible to a wider audience. With Lumo, Proton strengthens its reputation as a leader in privacy-focused technology, providing users with a powerful AI assistant for digital confidentiality.
