Obsidian vs Capacities 2026: Object-Based vs File-Based PKM
Capacities markets itself as a “studio for your mind” — an object-based note app where everything is a typed object (a person, a book, a meeting) rather than a loose page. Obsidian is the local-first, file-based standard for personal knowledge management. In 2026, these two represent two genuinely different philosophies of how a second brain should work. Here’s how they stack up.
The core difference: objects vs files
This is the whole comparison in one line. Capacities is object-based. You create typed objects — Book, Person, Meeting, Idea — each with its own structured fields and templates. Notes become a lightweight database of interconnected entities. It’s structured, visual, and great for people who think in categories.
Obsidian is file-based. Every note is a plain markdown file in a folder you own. Structure is something you impose with links, tags, folders, and plugins like Dataview. It’s flexible and future-proof, but you build the organization yourself.
If you love structure handed to you, Capacities is compelling. If you want raw flexibility and ownership, Obsidian wins.
Pricing
| Obsidian | Capacities | |
|---|---|---|
| Free tier | Yes (full local app) | Yes (limited objects/storage) |
| Paid plan | $4/mo (Sync, optional) | ~$10/mo Pro (less billed annually) |
| Data storage | Local markdown files | Capacities cloud |
Obsidian’s app is free and local; you only pay $4/month if you want official Sync. Capacities Pro runs around $10/month for unlimited objects, more storage, and AI features. Obsidian is the cheaper, more ownership-friendly option. For the full tier breakdown, see our Obsidian pricing guide.
Data ownership
- Obsidian: local-first markdown. You own the files outright, readable anywhere, future-proof.
- Capacities: cloud-based. Export exists, but day-to-day your data lives on Capacities’ servers and in their object model.
For long-term durability and portability, Obsidian is the safer bet.
Visual experience and daily workflow
Capacities is visually rich — object galleries, image-forward cards, and a daily-notes hub that ties everything together. It feels modern and is a joy for visual thinkers and collectors of references.
Obsidian is text-first and utilitarian by default. It’s lightning fast and works fully offline, but you’ll add plugins and themes to get the polish Capacities ships with.
Extensibility
- Obsidian: thousands of community plugins. The ecosystem is unmatched in PKM.
- Capacities: more closed and opinionated, with a growing but smaller feature set and built-in AI.
Which should you choose?
Choose Capacities if you want:
- Structured, object-based organization out of the box.
- A visually rich, modern interface.
- Built-in AI and a curated, opinionated experience.
Choose Obsidian if you want:
- Local-first ownership of plain markdown.
- Offline speed and a massive plugin ecosystem.
- Maximum flexibility to design your own system.
The bottom line
Capacities is a fresh, beautiful take on PKM that will click instantly with people who think in objects and want structure provided for them. Obsidian remains the flexible, free, you-own-it standard for those willing to build their own system. Try Capacities if structure and visuals excite you; choose Obsidian if ownership and extensibility matter more. Both have free tiers, so testing each takes an afternoon.
Comparing more note apps before you commit? See the best Obsidian alternatives →