Trillion vs Capacities
An object-based notes app where people, books, ideas and meetings are typed objects.
An object-based notes app where people, books, ideas and meetings are typed objects.



| What it does | Trillion | Capacities |
|---|---|---|
| Works with the AI you already use | Yes | Not stated |
| Keeps decisions with their reasons | Yes | Not stated |
| Lists, a CRM or any table | Yes | Not stated |
| Files and recordings | Yes | Not stated |
| Shared spaces with other people | Yes | — |
| A marketplace of tools | Yes | Not stated |
| Publishes sites and pages | Yes | Not stated |
| Workflows, rules and schedules | Yes | Not stated |
| Hands work from one AI to another | Yes | Not stated |
| Phone app | Yes | Yes |
| Free plan | Yes | Yes |
Checked 2026-10-12 on Capacities's own pages. A dash means their pages show it does not; "Not stated" means their pages do not say.
You want a structured personal knowledge base with typed notes.
You want a shared memory product for several AI apps you already use.
Pro: $9.99/month (shown as yearly equivalent; page data lists $11.99/month monthly)
Checked 2026-10-12. Prices change, so check Capacities's own page before you buy.
Capacities has a free plan. As published on 2026-10-12: Pro: $9.99/month (shown as yearly equivalent; page data lists $11.99/month monthly)
Its pages do not say. Trillion has no AI of its own: you connect ChatGPT, Claude, Codex or any AI you use, and each one reads and adds to the same work.
Pick Capacities if you want a structured personal knowledge base with typed notes. Pick Trillion if you want a shared memory product for several AI apps you already use.
Trillion X'er: $50/month per spot, plus measured usage at the listed rates with a small margin. One plan for yourself, a group or a company. The first 7 days are free.
Connect ChatGPT, Claude, Codex or any AI you use. Trillion keeps your decisions, files, lists and people, so every AI you open carries on from the same place.