Proton introduces Lumo for Business, a new plan for its AI assistant

Proton is rolling out Lumo for Business, a new plan built on its Lumo AI assistant, designed for companies with a strict need for confidentiality.

David Uzondu Neowin · Oct 30, 2025 11:32 EDT with 0 comments

Proton Lumo for Business — *Image via Proton*

Back in July, Proton introduced Lumo, an AI assistant meant to compete with giants like ChatGPT and Copilot. Since Proton is a Swiss company known for its privacy-oriented services, it heavily marketed Lumo as a more private alternative to mainstream LLM chatbots, powered by open-source models.

The assistant can also search the web, but it does so through "privacy-friendly" search engines, a feature that is disabled by default to protect users.

Now, Proton is introducing Lumo for Business, claiming that it gives organizations the advantages of AI assistants like improved productivity and efficiency "without the privacy risks".

Proton introduces Lumo for Business, a 'confidential' AI assistant for businessesWith Lumo for Business, you get the benefits of AI without giving up control over your business data. It’s perfect for companies that have a strict need for confidentiality, like financial advisers, law firms or tech companies with a lot of Intellectual Property.

The company claims that Lumo for Business is built on a foundation of zero-access encryption and "never keeps a record of your conversations". Chat histories are encrypted and can only be decrypted on a user's own device using their password. Lumo for Business costs US$11.99 per user a month when billed annually, gives access to advanced AI models and removes limits on daily chats.

Proton also fired shots at US-based competitors. The company argues that because the service is hosted in Europe, customer data is protected by GDPR and other strong privacy laws, which is a direct contrast to US services that can be compelled to hand over chat logs to the government. Plus, the Android, iOS, and web app codebases are open source.

Proton has been on a roll this year, shipping new services and features. Apart from the July launch of Lumo, the company also released a free and open source authenticator app that syncs one-time passwords across devices with end-to-end encryption.

In August, it brought an Emergency Access feature that lets you grant trusted contacts access to your Proton account if something happens to you.