Lumo: Proton's AI won't spy on you
24.7.2025
Translation: machine translated
If your hunger for data has kept you from using an AI so far, then you might like "Lumo" from Proton.
Lumo is an AI chatbot that answers questions like everyone else. However, it is not supposed to spy on its users or use them as training data. Lumo is backed by Proton, an organisation that has long been offering alternatives to data-hungry services.
An AI that doesn't collect your data
In the announcement of Lumo, Proton is convinced that AI can be useful and helpful. However, as it has a massive impact on people's lives, it should also be built responsibly. In the case of Lumo, this means seeing people and the protection of privacy as the most important element.
The language models used by Lumo are open source. This has the side effect that they are not as large and fast as commercial products from OpenAI, Google and others. However, I am already finding Lumo helpful in initial trials.
Lumo is said to differ from other AI suppliers in that there are no log files. In addition, as with all Proton products, zero-acces encryption is used. This means that not even the supplier can see what you ask the AI. Proton also promises not to share Lumo data with others or use it to train the AI. In addition, the use of open source language models means that there are no partnerships with other AI companies.
Lumo Plus: How Proton earns money with its AI
However, there are also limits to how Lumo can be used. Proton doesn't say exactly where they are. With Lumo Plus, there is a paid version of the AI that offers unlimited daily chats», for example «. Further advantages of the Plus version are:
- Access to the web search
- Complete chat history with search function
- Unlimited favourites for quick access
- Upload multiple and larger files
- Access to better AI models
- Prioritised support
Lumo Plus costs 12.99 euros or francs per month. If you book the service for a year, you only pay 9.99 per month, which is 23 per cent less.
Proton withdraws hardware from Switzerland
The non-profit Proton Foundation operates Lumo. It is closely associated with the for-profit supplier of Proton Mail and other fee-based cloud services with a focus on privacy protection.
Header image: Proton
Jan Johannsen
Senior Editor
Jan.Johannsen@galaxus.deAs a primary school pupil, I used to sit in a friend's living room with many of my classmates to play the Super NES. Now I get my hands on the latest technology and test it for you. In recent years at Curved, Computer Bild and Netzwelt, now at Digitec and Galaxus.
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