Knowledge base and self-service · September 2026 Edition
Notion vs BookStack
Zero of twelve models named Notion first on the direct prompt; zero named BookStack. Notion was named by twelve of the twelve models and BookStack by ten and Notion carries 46 labels and BookStack 13, so the shares are not directly comparable.
United States, founded 2016. Named in seven categories this edition.
founded 2015. Named in one category this edition.
First-choice share18%6%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate22%15%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#6A position in a field of 16; printed, not drawn.
Labels4613A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Notion reading right to left. Rank and label count are printed, not drawn.Document360 was named alongside these two in nine of the twelve direct answers. Notion vs Document360 · Notion vs Freshdesk · Notion vs Confluence
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the knowledge base and self-service page.
By framing
How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
NotionFirst choices, of twelve modelsBookStack
Direct003 against Notion
Paraphrase00
Comparative20
Budget-constrained93
Scale-constrained002 against Notion
Negative105 against Notion · 2 against BookStack
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.
Every model, every framing
The seventy-two answers behind the chart above, one cell each: where Notion and BookStack stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | |||||
| GPT-5.4 mini | | | ||||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | ||||
| Grok 4.1 Fast | | | | |||
| Mistral Small | | | ||||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | ||||
| GLM 4.7 FlashX | | | | |||
| MiniMax M2.5 | | | |
Notion BookStack first choice named as an alternative argued againstblank: not namedEach cell is one answer, Notion on the left and BookStack on the right.The direct prompt
The plain question, one answer per model, grouped by where Notion and BookStack stood in it.
Neither was the first choice, one was named
4 of 12 modelsThe answer put something else first and named one of the two as an alternative.Gemini 3.5 FlashDocument360, Guru alternatives: Confluence, Help Scout Docs, Helpjuice, Notion
Grok 4.1 FastDocument360 alternatives: Confluence, Helpjuice, Notion, Slite, Zendesk Guide
Kimi K2Confluence alternatives: Guru, Helpjuice, Notion, Slite, Zendesk Guide
GLM 4.7 FlashXHelply alternatives: Confluence, Notion, Plain, Slite
Neither was named
8 of 12 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5no first choice alternatives: Bloomfire, Document360, Lore, Stonly, Zendesk Guide
GPT-5.4 miniZendesk alternatives: Confluence, Intercom
Perplexity SonarDocument360 alternatives: Confluence, Helpjuice, Zendesk Guide
Mistral SmallPlain alternatives: Confluence, Document360, Freshdesk, Guru, Slite
DeepSeek V4 FlashDocument360 alternatives: Freshdesk, Guru, Help Scout, Helpjuice, Zendesk
Llama 4 MaverickHelpjuice alternatives: Document360, Freshdesk, Pylon
Qwen 3.7 FlashGuru, Intercom alternatives: Atlassian Confluence, Document360, Zendesk
MiniMax M2.5Document360 alternatives: Helpjuice, Zendesk Guide/Knowledge
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Notion leads by thirty-eight points.
Notion38%#1 of 16BookStack0%#11 of 16Mid-marketThe figures above
Enterprise
Level: the same share of first choices.
Notion0%#11 of 11BookStack0%#– of 11What the models said about Notion
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“Notion is highly popular, but its greatest strength—unlimited flexibility—is also its fatal flaw for team knowledge.... Otherwise, avoid it.” Gemini 3.5 Flash · negative prompt · soft negative
“tools like Notion are more often positioned as flexible internal starting points rather than the strongest dedicated KB platform” Perplexity Sonar · direct prompt · soft negative
“Notion or ClickUp, though they're usually less ideal than Zendesk/Confluence for a mature B2B support operation” GPT-5.4 mini · direct prompt · soft negative
“Choose Notion if you are a startup of fewer than 50 people looking for a highly visual, collaborative workspace to build a company wiki.” Gemini 3.5 Flash · budget prompt · first choice
“the strongest default choice is usually Notion if you want a flexible internal knowledge base, because it has a free plan” Perplexity Sonar · budget prompt · first choice
“For an internal team wiki, Notion (SMB flexibility) or Confluence (engineering/Atlassian) are the safe defaults” DeepSeek V4 Flash · comparative prompt · first choice
What the models said about BookStack
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“High-Risk Tools to Avoid ... BookStack ... Performance degrades significantly with large interconnected databases” Mistral Small · negative prompt · hard negative
“these are solid but require technical resources to manage properly” MiniMax M2.5 · negative prompt · soft negative
“Choose BookStack if you have access to an IT administrator, want to host your own data, and want a completely free tool with no user limits.” Gemini 3.5 Flash · budget prompt · first choice
“BookStack offers the best balance of being completely free, easy to use, and requiring minimal technical overhead” Mistral Small · budget prompt · first choice
“If you have technical resources: Start with BookStack or Outline (self-hosted) - lowest long-term cost” GLM 4.7 FlashX · budget prompt · first choice
Also compared
Notion vs Document360Notion vs FreshdeskNotion vs ConfluenceNotion vs ZendeskNotion vs GuruNotion vs HelpjuiceDocument360 vs BookStackFreshdesk vs BookStackConfluence vs BookStackZendesk vs BookStackBookStack vs GuruBookStack vs HelpjuiceAll twenty-eight head-to-head pages and the full knowledge base standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.