10 buyer questions asked on ChatGPT, Gemini, Perplexity — 29 answers analysed, 2026-09-20. Ranked by how many answers named each product. Obsidian was named most often (21 of 29).
| # | Product | Answers naming it | Share of voice | % |
|---|---|---|---|---|
| 1 | Obsidian scored 78/100 | 21 |
|
72% |
| 2 | Notion | 19 |
|
66% |
| 3 | Tana | 13 |
|
45% |
| 4 | Logseq | 11 |
|
38% |
| 5 | Capacities | 10 |
|
34% |
| 6 | Heptabase | 10 |
|
34% |
| 7 | Apple Notes | 7 |
|
24% |
| 8 | OneNote | 7 |
|
24% |
| 9 | Bear | 6 |
|
21% |
| 10 | Evernote | 5 |
|
17% |
| 11 | Anytype | 4 |
|
14% |
| 12 | Craft | 4 |
|
14% |
| 13 | Google Keep | 4 |
|
14% |
Which one do the AI assistants actually name more often?
Obsidian vs NotionObsidian vs TanaNotion vs TanaWe'll ask the same 10 questions about your product and show you which ones you're missing from. Takes about a minute — no account, no card.
Scanning in personal knowledge management and note taking — the same category as this table.
Method: each surface was asked the same 10 buyer questions; every answer was analysed for which products it named. Counts are mentions in answers, not endorsements. Nobody pays to be listed.