An AI chatbot from Proton AG in Switzerland, a privacy-focused company that offers a VPN and password manager as well as encrypted storage and email. Debuting in 2025, Lumo can analyze a spreadsheet, refine writing and summarize documents, as well as create code and text. Chat history is also encrypted. Known as a ChatGPT alternative with privacy, the company does not share user data with any third party or add it to their training passes. See
Proton Mail.