Proton launches Lumo for Business as a new plan for its privacy-focused AI assistant

Proton has expanded its privacy-focused AI assistant, Lumo, to serve business customers. This new offering, named Lumo for Business, allows organizations to incorporate artificial intelligence into their workflows while maintaining strict security, compliance, and productivity standards.

Building on Proton’s privacy ethos, Lumo for Business is designed for firms with heightened confidentiality requirements, such as financial advisers, law firms, and technology companies managing sensitive intellectual property. The platform upholds strong data protections: Lumo never retains conversation records, and team chat histories are protected with zero-access encryption to ensure only users have access.

In addition to confidentiality, Proton states that all business data shared with Lumo — whether related to intellectual property or client information — remains under the user’s exclusive control. Lumo delivers accessibility across web, iOS, and Android, with each app fully open source, allowing independent verification of its security and privacy claims.

Pricing for Lumo for Business starts at €23 per month with annual payment, or €28 on a monthly basis.