TL;DR: Pick Notion if you want a shared team workspace with databases, polished pages, and built-in AI on the Business plan. Pick Obsidian if you want your notes as private local Markdown files you own forever, free, with power coming from plugins — not a subscription. They solve different problems: Notion is a workspace, Obsidian is a second brain.
Notion vs Obsidian at a glance
| Feature | Notion | Obsidian | Edge |
|---|---|---|---|
| Where notes live | Notion cloud | Local Markdown files on your device | Obsidian for ownership |
| Free plan | $0 — unlimited pages solo, 5MB uploads, 7-day history, limited AI trial | $0 — full app, unlimited vaults, all core features, no account | Obsidian |
| Paid entry | Plus $10/user/mo billed annually ($12 monthly) | Sync $4/user/mo billed annually ($5 monthly), optional | Obsidian cheaper |
| Full AI price | Business $20/user/mo billed annually ($24 monthly) — full Notion AI included | No built-in AI; community AI plugins, bring your own key | Notion |
| Databases & projects | Native databases, boards, calendars, forms, sites | Bases + plugins; more manual setup | Notion |
| Linking & graph | Backlinks, basic relations | Bidirectional links + interactive graph view, Canvas | Obsidian |
| Collaboration | Real-time co-editing, comments, permissions, guests | Shared vaults via Sync; no live co-editing like Notion | Notion |
| Offline | Limited; cloud-first | Fully offline by design | Obsidian |
| Publishing | Notion Sites on paid plans | Publish $8/site/mo billed annually ($10 monthly) | Tie |
Prices checked October 2026. Research-based comparison; no hands-on testing claims.
How does Notion handle teams and AI?
Notion is built for other people to read your work. Pages look good by default, databases turn notes into trackers, wikis, and project boards, and permissions let a team share safely. The catch in 2026 is AI pricing: Free and Plus only get a limited AI trial. Full Notion AI — the agent, meeting notes, and enterprise search — sits on Business at $20 per user per month billed annually. A 10-person team that wants AI pays $200/month, not $100 on Plus.
Why do people stay with Obsidian for years?
Obsidian stores notes as plain .md files in a folder you control. If Obsidian disappeared tomorrow, your notes still open in any text editor. There is no block limit, no sign-up, and no telemetry claim at the core: the free app is the full product. Power comes from 2,000+ community plugins for kanban, calendars, flashcards, and more — which also means setup time. Sync and Publish are optional services, not gates on the editor itself. Commercial use is now free, with an optional $50/user/year support license.
What about privacy and lock-in?
This is the real split. Notion’s convenience requires trusting its cloud and export formats; large workspaces can feel slow and exports are imperfect. Obsidian’s local-first model gives privacy and portability, but you own backups and sync choices. If you use a third-party sync folder instead of Obsidian Sync, test conflict handling before trusting it with a team vault.
Which should you pick?
Pick Notion if: you collaborate daily, need databases and client-facing pages, and will pay Business for AI.
Pick Obsidian if: you write mainly for yourself, work offline, want graph-linked research notes, and refuse a per-seat bill for your own thinking.
Use both if: many long-term Obsidian users do — Obsidian for private thinking, Notion for anything a team must share.
Frequently asked questions
Is Obsidian really free?
Yes for the core app, personal and commercial use. You only pay if you want official Sync ($4/mo billed annually), Publish ($8/site/mo billed annually), or the optional commercial support license.
Does Notion Plus include full AI?
No. In 2026 Plus includes only a limited AI trial. Full Notion AI requires Business at $20/user/month billed annually.
Can Obsidian replace Notion for a team?
For a small technical team willing to manage shared vaults and plugins, sometimes. For non-technical collaborators who need live editing, comments, and permissions, Notion is far easier.
Which is better for students?
Obsidian for free, offline lecture notes that last beyond graduation. Notion if classes require shared group workspaces — and students can often get Plus free with a school email.