Proton Lumo
AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.
Technical Profile & Specs
verified 2026-11-07
- Cost
- $0 / forever (Open Source)
- License
- Open Source
- Hosting Model
- Local (on your machine)
- Platforms
- desktopcross-platformone-click install
- Installation
- Clone https://github.com/ProtonMail/WebClients/tree/main/applications/lumo or deploy with Docker Compose
- Operational Setup
- Download the native package or installer for your operating system.
- Where Your Data Lives
- All application data lives locally on your own machine.
- The Catch / Trade-off
- Community-driven open source project without dedicated enterprise SLAs.
Replaces 1 paid app
up to $15/mo ($180/yr) in subscriptions
Proton Lumo FAQ
Common questions
Is Proton Lumo free and open source?+
Proton Lumo is an open-source tool licensed under Open Source that runs on local. AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.
What paid software does Proton Lumo replace?+
Proton Lumo serves as a free replacement for 1 paid SaaS application: Grok, saving up to $15/month ($180/year) in subscription bills.
How do you install and set up Proton Lumo?+
Installation: Clone https://github.com/ProtonMail/WebClients/tree/main/applications/lumo or deploy with Docker Compose. Setup notes: Download the native package or installer for your operating system.
What is the catch or trade-off with Proton Lumo?+
Community-driven open source project without dedicated enterprise SLAs.