Proton AG
Lumo (Proton)
Privacy-first assistant from Swiss company Proton, running on Proton's European servers with zero-access encrypted chat history; business seats available.
Last checked 7 Nov 2026 · proton.me ↗
The facts
- Category
- Chat assistants & models
- Made by
- Proton AG
- How it charges
- Free plan, paid upgrades
- Starting price
- free; Lumo Plus $9.99/mo billed yearly ($12.99 list); business from $11.99/user/mo billed annually
- Free plan or tier
- Yes
- UK or EU data hosting
- UK or EU hosting offered
- Certifications
- Not published
- API
- No
- Suits
- Solo (just you), Small (2–49), Mid-sized (50–249)
- Maturity
- New
Prices and hosting options are the vendor’s published terms on the date checked. Check the vendor’s site before you buy.
Alternatives in the database
Sources
- https://proton.me/lumo/pricing
- https://proton.me/business/lumo/pricing
- https://proton.me/lumo/security
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