Cortex vs Obsidian
Obsidian is the gold standard for local-first, manual knowledge management. Cortex keeps the local-first philosophy but makes capture voice-first and organization automatic — and adds agents that work your notes while you don't.
Where Obsidian shines
- Truly local-first: your vault is plain markdown files you own forever
- The plugin ecosystem is unmatched — thousands of community extensions
- The canonical graph view and backlinking experience, refined over years
Where Cortex differs
- Capture: Obsidian starts with a blank note; Cortex starts with your voice. Speak, and the structure (title, tags, tasks) is written for you.
- Organization: in Obsidian, linking and tagging is your job. Cortex embeds every note and connects related thinking automatically.
- Agents: Obsidian plugins run when you click them. Cortex agents are durable — a Weekly Review agent runs Sunday night whether you open the app or not.
- Setup: a great Obsidian system takes weeks of tinkering. Cortex's opinionated defaults work on day one.
Side by side
| Cortex | Obsidian | |
|---|---|---|
| Capture | Voice-first — speak, get a structured note in <3s | Type into a blank note (voice via plugins) |
| Bi-directional links | Yes — [[wiki-links]] + auto-suggested connections | Yes — the originals |
| Knowledge graph | Self-organizing, with vector semantic search | Yes — manual links only |
| Autonomous agents | Yes — durable agents run on your notes 24/7 | No (plugins run on click) |
| Chat with your notes | Yes — chat with your whole graph (Cmd+K) | Via community plugins + your API key |
| Local-first / offline | Local-first with offline support | Fully local |
| Privacy | E2E encrypted sync, never trains on your data | Local files; sync is an optional add-on |
| Bring your own key | Yes — bring your own OpenAI/Anthropic key | Via plugins |
| Pricing | Free tier planned · Pro $15/mo | Free · paid sync add-on |
Who should stay with Obsidian
Common questions
Can I import my Obsidian vault into Cortex?
That's the plan — Cortex notes are markdown with YAML frontmatter, the same shape as an Obsidian vault, so import/export stays clean and lock-in stays low.
Is Cortex local-first like Obsidian?
Cortex caches your vault locally so notes open instantly and work offline; sync is end-to-end encrypted. AI features call models in the cloud (with your own key if you prefer).
Why not just add AI plugins to Obsidian?
You can, and many do. The difference is durability and defaults: Cortex agents run on schedules without the app open, and capture-to-structured-note is the core flow, not an add-on.
Try the Cortex wedge in 10 seconds
Speak a thought on the early-access page and watch it become a structured note.
Join the founding queue →Cortex is in early access. This page reflects our understanding of Obsidian as of July 2026 — if we got something wrong, tell us and we'll fix it.