ToolRank
Lumo (Proton)
Answers questions, searches the web, analyses files and makes images in encrypted chats
Visit Lumo (Proton) site → Compare
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The short answer
Lumo (Proton) is ranked #7 of 7 in AI Assistants on ToolRank. A free plan with no card, chats never used for training, and Plus under $10 a month billed yearly. Paid plans start at $9.99/month (Plus, billed yearly). Free plan: Free plan: limited messages, Max model use and image generations, no credit card. Best for: People who want a ChatGPT-style assistant with strong privacy. Main limitation: Free plan limits messages and Max model use; Business plan price not shown. Facts checked against vendor pages on 23 Oct 2026.
Why it’s ranked here
A free plan with no card, chats never used for training, and Plus under $10 a month billed yearly.
Editorial verdict: Private AI chat assistant from Proton with zero-access encrypted chats and a free plan. How we rank →
Main limitation
Free plan limits messages and Max model use; Business plan price not shown
Pricing
| Pricing model | freemium |
|---|---|
| Starting price | $9.99/month (Plus, billed yearly) |
| Free tier | Free plan: limited messages, Max model use and image generations, no credit card |
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 1 Project, limited usage |
| Lumo Plus | $12.99/month billed monthly; $9.99/month billed yearly ($119.88 every 12 months) | More Max model usage, unlimited Projects |
| Lumo for Business | Price not shown in fetched text | Via Lumo Professional or Proton Workspace |
Notes: Prices in USD. 30-day money-back guarantee. Vendor says Lumo's code is open source and chats are stored with zero-access encryption.
Prices as shown on the vendor’s pricing page on 23 Oct 2026, USD unless stated. Vendors change prices; check before you buy.
Best for
People who want a ChatGPT-style assistant with strong privacy
Avoid if
Not yet verified
Platforms & integrations
Platforms
Integrations
Model / provider: Not yet verified
Evidence & sources
- Lumo pricing and FAQ checked 23 Oct 2026
- About Lumo checked 23 Oct 2026
Every fact on this page comes from the sources above. Anything we could not confirm says “Not yet verified”.
FAQ
Is Lumo (Proton) free?
Yes. Lumo (Proton)'s pricing page lists a free plan: Free plan: limited messages, Max model use and image generations, no credit card. Checked 23 Oct 2026.
How much does Lumo (Proton) cost?
Paid plans start at $9.99/month (Plus, billed yearly). Plans listed: Free ($0); Lumo Plus ($12.99/month billed monthly; $9.99/month billed yearly ($119.88 every 12 months)). Prices as shown on the vendor's pricing page on 23 Oct 2026; they can change.
What is Lumo (Proton) best for?
People who want a ChatGPT-style assistant with strong privacy.
What is the main limitation of Lumo (Proton)?
Free plan limits messages and Max model use; Business plan price not shown.
Which platforms does Lumo (Proton) run on?
Web, per the vendor's pages (checked 23 Oct 2026).
How does ToolRank rank Lumo (Proton)?
Lumo (Proton) is #7 of 7 in AI Assistants. Rankings are editorial: capability and reliability weigh more than popularity, and paid placements never change rank.
Reviews
No reviews yet.