Proton on Thursday announced the launch of Lumo, its AI assistant that is designed to keep your chatbot conversations totally private. The Swiss company, best known for its private mail and VPN services, says it built Lumo as an alternative to other AI tools that use users’ data to train their large language models (LLMs).
Lumo can be used for most anything other chatbots are used for, including analyzing documents, generating code, and helping you rewrite emails and other communications. However, Lumo does not store any chat logs on its servers, instead keeping everything on your device in encrypted form. No one can see your conversations, including Proton.
The service runs on open-source AI models like Mistral’s Nemo and Nvidia’s OpenHands 32B, operating from European data centers that Proton says it is in direct control of. Users’ questions and responses are not used to train future versions, meaning there is no risk that your private information will show up in another user’s chat.
A “Ghost mode” can makes your current conversation disappear forever when it is closed, while the assistant’s web search feature uses privacy-friendly search engines. You can also link Proton Drive files to Lumo and everything remains encrypted.
Lumo is available to use free at: Lumo.proton.me and a Proton account is not required to access it. Users with a Proton account can save their chat history using the company’s “zero-access” encryption across all of their devices. Mobile apps are available for the iPhone and Android devices.
Power users can remove limits on chats and file upload by subscribing for $12.99 per month.
Lumo by Proton is available as a free download from the App Store. [Direct Link]
