On July 23, Proton presented Lumohis brand new assistant IA. And if you missed the ad, rest assured, you are not alone: we too were on leave. Suddenly, we take this opportunity to catch up and return to this chatbot IA which puts everything on confidentiality, far from the usual practices of digital giants. Open source models, zero access encryption, no conversation journal … LUMO wants to be transparent, sober and above all respectful of your data. Suffice to say that it changes.
An AI assistant focused on confidentiality
In Proton, confidentiality, it’s a bit of an obsession, in the good sense of the word of course. After the encrypted messaging (Proton Mail), the secure cloud (Proton Drive), the VPN (Proton VPN) or the password manager (Proton Pass), the Swiss company expands its ecosystem with Lumoan AI assistant who takes up the same commitments: No resale of data, no profilingand above all, a Zero access encryption which guarantees that even Proton cannot read your exchanges.
This chatbot is accessible both on the web and via a mobile application (available on Android and iPhone/iPad), without obligation to create an account. And despite a late arrival on an already full market, Proton assumes its positioning: Lumo is not intended to become the fastest or the most powerful. His goal is to be most trustworthy.
| Download the Lumo application |
Classic functions, with a proton touch
Lumo knows how to do everything we expect from a modern AI assistant: answer questions, reformulate a text, summarize a document, or even carry out research on the web. In addition, there are some well thought out options, integrated to respect Proton’s privacy promises.
By default, Lumo does not connect to the Internet, unless you manually click on the “Web Search” button visible in the interface. You can also Send filesthat he will analyze without saving them on his servers. And if you are a user of Proton Drive, Lumo can even interact directly with your files stored online, always encrypted, of course.
Another important point: if you have a proton account, you can choose to save theHistory of your conversations. But even in this case, it is end -to -end et Readable only on your devices. And for those who want to go completely under the radar, a ghost mode Allows you to erase everything once the session is over.
Tailor-made architecture, without compromise on confidentiality
Under the hood, Lumo relies on several models of open source language. Among them, we find Mistral Small 3 (developed by Mistral AI), OpenHands 32B (Nvidia), OLMO 2 32B (Allen Institute for AI) or Nemo. Proton voluntarily opted for an approach multi-modelwith an intelligent routing system capable of selecting the most suitable model depending on the type of request.
Why this approach? Simply for gain in efficiency. Rather than doing everything to rest on a single very expensive model to run, Lumo juggles with lighter and specialized models. It is faster, more economical, and above all, more respectful of your resources… Like your data.
And above all, None of your conversations are used to improve these models. Unlike other services that refine their AI from user exchanges, Proton has chosen not to never train your models on your prompts. No newspaper, no profile, no surveillance.
European servers, and a nose to Switzerland
Historically based in Switzerland, Proton has decided to review his copy. In question: a local bill deemed too intrusive, which could oblige tech companies to monitor their users. A shame for a society that has built all its reputation on confidentiality. Lumo is therefore the first service to migrate to a 100 % European infrastructurewith data centers located in Germany and Norway.
This choice is not trivial. By moving away from the Swiss legal framework, Proton seeks to guarantee a maximum data protection Thanks to European privacy laws, deemed more solid in the face of potential excesses. And to support this change of course, the company plans to invest Over 100 million euros in these new installations.
In other words, Lumo is not only an AI assistant. It is also a way for proton to assert a certain vision of technology: more ethical, more sober, and above all, more independent.
Free or paid: two formulas according to your needs
Lumo is accessible freedirectly from its website (LUMO.PROTON.ME) or via the mobile application available on Android and iOS. No account is required to test the AI, and you can pose until 100 questions per week without paying anything.
For those who want to go further, Proton offers a formula Lumo Plusbilled € 12.99 per monthor € 9.99 per month If you opt for the annual subscription. This version unlocks several features:
- Unlimited requests
- Loading large files
- Access to more advanced AI models
- Addition of favorites
- Enriched conversation history
- Priority assistance
Note: Lumo Plus is not included in the Proton Unlimited subscriptionunlike the older Visionary offer, which incorporates all the brand’s services, including LUMO.
An AI that takes private life seriously
With Lumo, Proton does not try to compete with the IA The most popular of the moment on raw power or all-VA integrations. Its objective is elsewhere: to offer a sober, European alternative, and above all, respectful of your data. No Journal des Conversations, no training on your requests, no hidden profiling, just an assistant who does the job, without spying on your smallest actions.
And in a context where confidentiality becomes a rare commodity, this kind of initiative deserves to be praised. If you are looking for an AI assistant who does not turn into a data pipeline, Lumo clearly deserves the detour 😉.
Source : Proton