ObsidianSharpen your thinking. The free and flexible app for your private thoughts.
vs
TettraAI powered knowledge base that answers questions for you in Slack
Comparison · Knowledge Management · weekly run Nov 3
Obsidian vs Tettra
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Tettra is the stronger AI pick in Knowledge Management: it has a visibility score of 7.2 versus 5.2 for Obsidian.
Choose Obsidian if…
- You want a free plan to start
- AI answers describe it more positively (50% vs 27% positive)
- Strong for personal knowledge management
- Maximum ownership of your files
Choose Tettra if…
- You want the brand AI engines rank higher (7.2 vs 5.2)
- Good option for internal company knowledge management
- Simple internal wiki with low administration
- Among highest-rated for willingness to recommend
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Obsidian | Tettra |
|---|---|---|
| Visibility score | 5.2% | 7.2% |
| Change vs last week | New | New |
| Rank in Knowledge Management | #17 | #15 |
| Share of voice | 1.1% | 1.9% |
| Mentions this run | 6 | 11 |
| Positive in AI answers | 50% | 27% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Obsidian 0pp · Tettra 0pp over 0 weekly runs.
Engine by engine
Tettra leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
ObsidianTettra
Head to head in AI answers
0 engine answers name both brands
0Obsidian ranked higher
0Tettra ranked higher
Features, pricing & fit
| Dimension | Obsidian | Tettra |
|---|---|---|
| Pricing model | Per seat | Per seat |
| Entry price | Free; paid from $4 per seat / mo | $8 per seat / mo |
| Free plan | Yes | No · 30-day trial |
| Deployment | Local desktop and mobile apps, with optional cloud Sync and Publish add-ons | Cloud only; self-hosting not offered |
| Support | Discord community, Discussion forum, Help site, Priority support with paid Sync and Publish plans | Help center, Live chat, Priority support on Enterprise plan |
| Founded | 2020 | 2015 |
| Headquarters | Toronto, Ontario, Canada | Boston, MA, United States |
| Employees | 1–10 | 1–10 |
| Funding | Bootstrapped | Seed |
| Best for | Individuals and small teams who want private notes stored locally as plain text files they can keep long term | Small and mid-market businesses of 10 to 500 employees that rely heavily on Slack |
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)
Tettra
Scaling$8user/month, 10 user minimum
EnterpriseCustomcustom pricing, contact sales
Pros and cons
Themes from the AI answers that mention each brand
Obsidian
- Strong for personal knowledge management
- Maximum ownership of your files
Tettra
- Good option for internal company knowledge management
- Simple internal wiki with low administration
- Among highest-rated for willingness to recommend
- Offers a 30-day free trial
- Discount of 20%
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Obsidian vs Tettra”, https://slateindex.ai/compare/obsidian-vs-tettra, data of Nov 3, 2026. Licence: CC BY 4.0.