ObsidianSharpen your thinking. The free and flexible app for your private thoughts.
vs
OutlineTeam knowledge base & wiki
Comparison · Knowledge Management · weekly run Nov 3
Obsidian vs Outline
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Obsidian is the stronger AI pick in Knowledge Management: it has a visibility score of 5.2 versus 1.9 for Outline.
Choose Obsidian if…
- You want the brand AI engines rank higher (5.2 vs 1.9)
- AI answers describe it more positively (50% vs 0% positive)
- Per seat pricing suits your budget better than flat tiers
- Strong for personal knowledge management
Choose Outline if…
- You need a self-hosted or on-premises option
- You prefer a larger, established vendor (11–50 employees)
- Flat tiers pricing suits your budget better than per seat
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Obsidian | Outline |
|---|---|---|
| Visibility score | 5.2% | 1.9% |
| Change vs last week | New | New |
| Rank in Knowledge Management | #17 | #34 |
| Share of voice | 1.1% | 0.4% |
| Mentions this run | 6 | 2 |
| Positive in AI answers | 50% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Obsidian 0pp · Outline 0pp over 0 weekly runs.
Engine by engine
Obsidian leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
ObsidianOutline
Head to head in AI answers
0 engine answers name both brands
0Obsidian ranked higher
0Outline ranked higher
Features, pricing & fit
| Dimension | Obsidian | Outline |
|---|---|---|
| Pricing model | Per seat | Flat tiers |
| Entry price | Free; paid from $4 per seat / mo | Free; paid from $4 / mo |
| Free plan | Yes | Yes |
| Deployment | Local desktop and mobile apps, with optional cloud Sync and Publish add-ons | Cloud hosted or self-hosted on your own server |
| Integrations | — | 20+ |
| Support | Discord community, Discussion forum, Help site, Priority support with paid Sync and Publish plans | Email support, Enterprise support contract |
| Founded | 2020 | 2020 |
| Headquarters | Toronto, Ontario, Canada | San Francisco, California, US |
| Employees | 1–10 | 11–50 |
| Funding | Bootstrapped | Series A |
| Best for | Individuals and small teams who want private notes stored locally as plain text files they can keep long term | Teams that want a fast, collaborative knowledge base in the cloud or on their own server |
Plans side by side
Obsidian
Free$0forever
Sync$4per user per month, billed annually ($5 billed monthly)
Publish$8per site per month, billed annually ($10 billed monthly)
Outline
Cloud: 1-10 team members$10month
Cloud: 11-100 team members$79month
Cloud: 101-200 team members$249month
On-Premises Community Edition$0
On-Premises Business$4user/month billed annually, 10 user minimum
On-Premises Enterprise$5user/month billed annually, 100 user minimum
Pros and cons
Themes from the AI answers that mention each brand
Obsidian
- Strong for personal knowledge management
- Maximum ownership of your files
Outline
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Obsidian vs Outline”, https://slateindex.ai/compare/obsidian-vs-outline, data of Nov 3, 2026. Licence: CC BY 4.0.