
For anyone who is a secret that The chatbot led by artificial intelligence uses all the information you provide At least two things: trained to improve your answers and customize to obtain a closer connection with you. The developers themselves tell you many times and most users don’t have many problems.
However, there are those who do not worry about the information that the IA and how developers’ companies could use them. When this happens, the alternatives that have remained to be used are very few, but now we have one more: Lumo, Proton’s chatbot that takes care of our privacy.
Lumo encrypts your conversations and do not record anything you’re talking about with him
Proton is a society whose flag has always been privacy of user data. His first product was Proton Mail, a encrypted electronic, open and zero e -e -mail service -condated in 2013 which catapulted its popularity.
After this service, others have arrived, all focused on privacy, such as Proton VPN, Proton Calendar, Proton Drive (Cloud Storage) or Proton Pass (Password Manager). Now, the company has just added another service to its list: Lumo, A chatbot led by “where each conversation is reserved”.
According to your developers, you can ask LMO everything you want, without worries, because it is on three big pillars:
- Privacy: Because conversations are not maintained without a key, as in other assistants.
- Safety: Because not even Proton can access the chronology of conversations, because they do not have the key to contempt.
- Respectful treatment: Because conversations are not used as training.


The company guarantees it Each user has his own encryption key and no one else knowsSo the data is inaccessible. Moreover, Proton does not share any information with third partiesas advertisers or governments.
Lumo is a nascent chatbot, so he still doesn’t have too many features. However, at the time of the drafting of this article I was already able to all this:
- Do research on the web Use of engines that prioritize the privacy of user data.
- Analyze the documents To improve them or correct them, but without saving any information.
- Connection with Drive Proton So you can use your documents in the cloud for what you want. Once again, without registering any data.
- Work as a virtual assistantOr to get advice on something, help you with technical problems, solve doubts and more.
At the moment, Lumo has no characteristics present in other chatbots, such as the creation of images or videos from the text. However, they are likely to be added later, when their development has advanced a little more.
How much does Lum cost, where are they available and what languages do they guide him?
According to Proton, LME works thanks to several llm (Great linguistic models) Open source that They run on the European servers of the company. Some of them are Maestral Nemo, Mistral Small 3, OpenHands 32b (Nvidia) and Olmo 2 32b (IaStitue Ia).
And how does the chatbot decide which one to use? According to Betsy Jones, a spokesperson for Proton, it will depend entirely on what you consult. For example, If your question concerns programming, then you will use To answer you, since it is a LLM specialized in coding tasks.
Now, How can you use Lumo and what is your price? The chatbot led by the AI is available from its website, lumo.proton.mebut also Through your mobile apps for Android and iOS.
At the moment, LME is compatible with 11 different languages (Spanish included) and has three ways to be used:
- Free and without account proton: Allows a limited number of questions per week to the chatbot. You will not have access to a conversation story.
- Free and with Proton account: Increase the number of weekly consultations, you will have access to a encrypted story, you can mark messages as favorites and load small documents.
- Lumo Plus: By paying 9.99 euros per month, you will have access to unlimited consultations, chronology with encrypted favorites, unlimited encrypted and ability to load large files.
What do you think of the bet of this proton for a more private artificial intelligence?