Compare Lumo by Proton vs HIX AI vs Capacities
| Feature | Lumo by Proton | HIX AI | Capacities |
|---|---|---|---|
| Description | Lumo is Proton's AI assistant for questions, writing help, and file chats, built so your conversation history stays encrypted and private. A free plan lets anyone try it, and Plus adds unlimited chats for people who want privacy-first help every day. | HIX AI helps you draft articles, emails, and chat replies with a suite of writing tools. A free plan is available without a credit card, and paid plans unlock higher limits for people who create content regularly. | Capacities is a notes and knowledge app built around objects and daily notes. The Basic plan stays free, and Pro adds AI assist so you can explore and connect ideas while keeping ownership of your knowledge base. |
| Pricing | Free $0; Lumo Plus $12.99/mo monthly or $9.99/mo billed yearly ($119.88/yr) | Free plan available; paid plans from about $4.99-$9.99 (confirm current tier names on pricing page) | Basic free forever; Pro about $9.99/mo; Believer from about $12.49/mo |
| Main category | Chat assistants | Writing | Research and notes |
| Website | Visit Lumo by Proton | Visit HIX AI | Visit Capacities |
| Info last checked | October 17, 2026 | October 14, 2026 | October 13, 2026 |
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