The company behind Proton VPN, Proton Mail and Proton Pass, has released an open-source AI chatbot that it says isn't trained on user data.

Proton's new AI assistant Lumo promises to keep user data private with zero-access encryption, no logging, and an incognito mode.

Proton isn’t involving major AI providers at all. Instead, Proton’s Lumo AI uses a mix of open-source models that the company runs on its own servers. While conversations aren’t end-to-end encrypted, Proton says it doesn’t keep logs of users’ chats, and conversations are decrypted only on users’ devices.