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Illustration of a purple cat with a yellow collar next to the Lumo by Proton logo and a chat interface screen on an electronic device.
The AI aiming to dethrone ChatGPT with a promise: total privacy | Camara La Derecha Diario
ARGENTINA

Lumo: this is the free AI that bets on privacy against OpenAI and Google

Proton's new AI promises what no one else offers: total privacy and no storage of your chats in the cloud

by

Editorial Team

Lumo is the new artificial intelligence assistant developed by Proton, the Swiss company behind services like Proton Mail and Proton VPN.

What makes it different is not its technical capability, but its extreme focus on privacy. To such an extent that not even the company itself can access your chats.

Animated purple cat with a yellow padlock collar next to the text
Lumo is the new artificial intelligence assistant developed by Proton | La Derecha Diario

What is Lumo and why does it make a difference?

Lumo is an AI assistant that can summarize texts, generate emails, write code, and perform tasks similar to ChatGPT or Gemini.

However, unlike them, its greatest strength lies in how it protects users' personal data.

Privacy by design: this is how it works

  • It doesn't store conversations in the cloud: everything is stored locally and is encrypted.
  • Communications use the same encryption system as Proton Mail.
  • Chats are not used to train language models.
  • There are no agreements with companies like OpenAI or Google.
Lumo by Proton chat interface with a welcome message and a drawing of a purple cat on the right, plus a text box asking for a remedy for a sore throat
Privacy by design: this is how it works | La Derecha Diario

This means that no one can see what you talk about with the AI, not even the company that created it. Proton also commits to not sharing data with third parties under any circumstances.

What models does Lumo use and how does it connect?

Lumo operates with four open-source language models: Nemo, Mistral Small 3, OpenHands 32B, and OLMO 2 32B.

Interface of a mobile app called Lumo that offers health tips and allows users to save chats as favorites, featuring a minimalist design and a purple cat character.
What models does Lumo use and how does it connect? | La Derecha Diario

All of them run from data centers located in Europe, which reinforces control over jurisdiction and data protection.

Available features and how to access them

In addition to generating content, Lumo can perform web searches, although this feature is disabled by default to protect privacy. If enabled, it only uses private search engines.

Illustration of a purple cat with a serious expression shooting fire at two burning folders next to the text lumo by Proton AI that respects your privacy
Available functions and how to access them | La Derecha Diario

Lumo is already available and can be used without creating an account. However, if you have a Proton account, you get access to:

  • Synchronized chat history
  • File upload for analysis
  • Extended features depending on the plan

How much does Lumo cost and what does the paid version include?

The free version works without major restrictions, but there is Lumo Plus, a paid plan that costs 9.99 euros per month. It includes unlimited use, extended history, and compatibility with larger files.

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