Lumo
Private AI · Freemium
About
Proton's privacy-focused AI assistant that keeps no chat logs and encrypts saved conversations.
Key features
- No-logs chat
- Encrypted chat history
- Open models
- File upload
Best for
- — Privacy-conscious AI chat
- — Proton users
- Pricing
- Freemium
- Platforms
- Web, iOS, Android
- Last checked
- 2026-10-29
- Status
- Listed, not yet tested
Our take
A genuine privacy option. Model capability trails frontier assistants.
Features and pricing change often — confirm on lumo.proton.me before you commit.
Alternatives to Lumo
| Tool | Type | Pricing | Best for |
|---|---|---|---|
| Lumo (this) | Private AI | Freemium | Privacy-conscious AI chat |
| Duck.ai | Private AI | Free | Anonymous AI questions |
| Brave Leo | Private AI | Freemium | Private in-browser AI |
| 1Password | Password managers | Paid | Teams sharing credentials |
| Bitwarden | Password managers | Open source | Free password management |
| Proton | Private communication | Freemium | Private email |
| Lakera | AI security | Freemium | Protecting LLM apps from prompt injection |