September 2026 snapshot · 72 AI answers Leader emerging

Docs & Knowledge Management: AI Visibility Ranking

Workspaces for documents, wikis, and team knowledge. Right now, Notion is the brand AI assistants recommend most, with a Visibility Score of 82 and the #1 spot in 58% of answers. Head-to-head: Notion vs Confluence →

These rankings are measured from what the three models know from training, not a live web search. When the models DO search the web, see which sources they cite. Methodology.

Three models, three different answers on who leads docs.

ChatGPT favors Confluence with a 78.3 score while Claude and Gemini both push Notion above 85, meaning the category leader changes depending on which AI your buyer consults. Notion wins the aggregate with a 90% mention rate, but that headline masks a real split at the model level. Confluence is essentially invisible to Gemini at a score of 50, which matters if your buyers skew toward Google's tooling.

AI-generated analysis of the September 2026 measurements.

#	Brand	Visibility Score	Trend (3 mo)	Mention rate	Avg. position	#1 pick rate	Models
1	Notion	82 ±2.8	▼ 4	90%	2.0	58%	ChatGPT #2 Claude #1 Gemini #1
2	Confluence	68 ±1.5	▲ 5	79%	2.4	6%	ChatGPT #1 Claude #2 Gemini #2
3	Obsidian	26 ±4.6	flat	40%	4.6	0%	ChatGPT #7 Claude #3 Gemini #3
4	Guru	26 ±5	▲ 10	39%	4.4	0%	ChatGPT #3 Claude #5 Gemini #5
5	Coda	20 ±4.4	flat	32%	4.7	0%	ChatGPT #9 Claude #4 Gemini #6
6	Slab	15 ±5	flat	25%	4.9	0%	ChatGPT #4 Claude #10 Gemini #9
7	Google Workspace	14 ±3.8	flat	17%	2.7	4%	ChatGPT #13 Claude #7 Gemini #8
8	Outline	13 ±3.4	flat	21%	4.7	1%	ChatGPT #5 Claude #6 Gemini
9	Microsoft SharePoint	12 ±3.6	▲ 6	15%	3.3	8%	ChatGPT #8 Claude #8 Gemini #14
10	Glean	12 ±3.4	flat	19%	5.0	3%	ChatGPT #15 Claude #14 Gemini #4
11	SharePoint	12 ±4.7	flat	19%	5.1	0%	ChatGPT #6 Claude #15 Gemini #7
12	Zoho Workplace	11 ±0.3	flat	13%	2.1	8%	ChatGPT #10 Claude #13 Gemini #10
13	OnlyOffice	10 ±0.5	flat	13%	2.7	0%	ChatGPT #12 Claude #11 Gemini #11
14	Slite	10 ±4.6	flat	17%	4.8	0%	ChatGPT #11 Claude #12 Gemini #12
15	LibreOffice	9 ±0.5	flat	13%	3.6	1%	ChatGPT #14 Claude #9 Gemini #13

The ± under each score is the reliability band: how much the number would move if we re-ran the identical measurement. It is tight because each prompt is sampled multiple times. It is not the same as how much the ranking depends on which prompts we ask — a separate, wider figure shown on hover.

Just below the cutoff: ServiceNow (7.8), Microsoft Viva (7.5), Google Docs (7.4), GitBook (6.3), Tettra (5.7). 75 brands were scored in this category; the leaderboard shows the top 15.

Visibility Score: position-weighted presence across all measured answers, 0 to 100. A score of 100 means the brand was the first recommendation in every answer. Every point in a trend line is a live monthly measurement; there is no modeled or backfilled history. Full methodology.

Openness 18/100: the share of this category's recommendation weight not held by the leader.

Compare brands in Docs & Knowledge Management head-to-head → · Explore the prompt tree →

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Do the models agree?

Per-model Visibility Scores for the top 10. A long gray bar means the three assistants disagree about the brand. Hover a row for exact values.

ChatGPT Claude Gemini

Where they land in the answer

When a brand is mentioned, where does it appear? Box shows the middle 50% of positions, the thick line is the median, whiskers are the extremes. Hover a row for the detail.