What AI assistants actually recommend when buyers ask about ai tools for developers writing documentation — measured on a rolling 4-week window across 4 engines, published as open data.
Updated 2026-09-18 · 28 sampled answers · rolling 4-week window · methodology
Rankings are measured from sampled AI answers — never editorial, never paid. Orbator builds AI-visibility tooling; when Orbator itself appears in any category, it is measured by the same rules as everyone else.
Measured by Orbatormethodology owner Henrik Tellewindow ends Sep 18, 2026
Sample: 28 AI answers · Window: Aug 21, 2026 – Sep 18, 2026 (4-week rolling) · trend vs prior 4 weeks (94 answers)
Samples by engine: GEMINI 7 (last run Sep 3, 2026) · CHATGPT 7 (last run Sep 3, 2026) · CLAUDE 7 (last run Sep 4, 2026) · PERPLEXITY 7 (last run Sep 3, 2026) · GROK 0 (last run Aug 13, 2026 — stalest)
How these numbers are made: sampling design · prompt provenance · what counts as a mention · what we cannot see
On the record: This ranking is frozen as a dated snapshot every day. View this category's history to see what entered and left the ranking and when, or read what the engines actually said on a given day.
Across 28 sampled AI answers from 4 engines, Mintlify is recommended most often — appearing in 46.4% of recommendations, followed by ReadMe (32.1%) and GitBook (32.1%).
This is a measurement of share of voice across 4 AI engines — not an editorial pick. See the full ranking below.
Orbator asked Gemini, ChatGPT, Claude and Perplexity buyer questions about ai tools for developers writing documentation and sampled 28 answers between Aug 21, 2026 and Sep 18, 2026. Recommendation share counts the answers that recommended or listed a product, so a passing mention or a warning adds nothing to it. A category publishes once it holds at least 20 independently sampled answers in the window. Read the full methodology or download this ranking as CSV.
Start with the question you are actually asking, because the measured leaders change with it. Mintlify led the best_in_category prompts, recommended in 94.4% of those 18 runs. GitBook led the comparison prompt about open source versus internal engineering teams at 100% of 9 runs. ReadMe led the recommendation prompt about generating README files from code at 100% of 9 runs. Git led the problem_solving prompts at 44.4% of 18 runs, and it also carries the only pricing fact in the snapshot, listed as Git: Free, last verified 2026-09-05. No other product in the top five has a verified price on record here.
If your shortlist question is sync between docs and code, the answers point one way. If it is a hosted docs platform to compare across team types, they point another. Weigh the intent match before the headline share.
| # | Product | Share | Trend | Engines | |
|---|---|---|---|---|---|
| 1 | mintlify.com | 46.4% 95% CI 29.5–64.2% 13 mentions · avg pos 3.3 first pick 38.5% | — | GEMINI 71.4%CHATGPT 42.9%CLAUDE 42.9%PERPLEXITY 28.6% | Claim |
| 2 | readme.com | 32.1% 95% CI 17.9–50.7% 9 mentions · avg pos 3 first pick 33.3% | — | GEMINI 28.6%CHATGPT 71.4%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 3 | gitbook.com | 32.1% 95% CI 17.9–50.7% 9 mentions · avg pos 3.4 first pick 11.1% | — | GEMINI 42.9%CHATGPT 14.3%CLAUDE 28.6%PERPLEXITY 42.9% | Claim |
| 4 | docusaurus.io | 28.6% 95% CI 15.3–47.1% 8 mentions · avg pos 5.7 first pick 37.5% | — | GEMINI 28.6%CHATGPT 28.6%CLAUDE 28.6%PERPLEXITY 28.6% | Claim |
| 5 | docuwriter.ai | 25% 95% CI 12.7–43.4% 7 mentions · avg pos 5 first pick 14.3% | — | GEMINI 42.9%CHATGPT 14.3%CLAUDE 28.6%PERPLEXITY 14.3% | Claim |
| 6 | swimm.io | 21.4% 95% CI 10.2–39.5% 6 mentions · avg pos 4.4 first pick 0% | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 57.1% | Claim |
| 7 | git-scm.com | 17.9% 95% CI 7.9–35.6% 5 mentions · avg pos 3 first pick 40% | — | GEMINI 28.6%CHATGPT 28.6%CLAUDE 14.3% | Claim |
| 8 | notion.so | 17.9% 95% CI 7.9–35.6% 5 mentions · avg pos 3 first pick 0% | — | GEMINI 28.6%CLAUDE 28.6%PERPLEXITY 14.3% | Claim |
| 9 | cursor.sh | 17.9% 95% CI 7.9–35.6% 5 mentions · avg pos 5.6 first pick 20% | — | GEMINI 14.3%CHATGPT 42.9%PERPLEXITY 14.3% | Claim |
| 10 | code.visualstudio.com | 17.9% 95% CI 7.9–35.6% 5 mentions · avg pos 6.4 first pick 0% | — | GEMINI 42.9%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 11 | gitlab.com | 17.9% 95% CI 7.9–35.6% 5 mentions · avg pos 7.2 first pick 20% | — | GEMINI 28.6%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 12 | notion.com | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 3 first pick 0% | — | GEMINI 28.6%CLAUDE 28.6% | Claim |
| 13 | DocuWriter | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 6.3 first pick 0% | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 14 | buildwithfern.com | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 7 first pick 0% | — | CHATGPT 14.3%CLAUDE 42.9% | Claim |
| 15 | kodesage.ai | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 7 first pick 0% | — | GEMINI 42.9%PERPLEXITY 14.3% | Claim |
| 16 | document360.com | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 7.3 first pick 0% | — | GEMINI 28.6%CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 17 | scribe.com | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 8 first pick 0% | — | GEMINI 42.9%CLAUDE 14.3% | Claim |
| 18 | DeepDocs | 14.3% 95% CI 5.7–31.5% 4 mentions · avg pos 9.3 first pick 0% | — | GEMINI 57.1% | Claim |
| 19 | Readme AI | 10.7% 95% CI 3.7–27.2% 3 mentions · avg pos 2 first pick 0% | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 20 | sphinx-doc.org | 10.7% 95% CI 3.7–27.2% 3 mentions · avg pos 2.7 first pick 33.3% | — | CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 21 | JSDoc | 10.7% 95% CI 3.7–27.2% 3 mentions · avg pos 5.7 first pick 0% | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 22 | readable.com | 10.7% 95% CI 3.7–27.2% 3 mentions · avg pos 5.7 first pick 0% | — | GEMINI 28.6%CLAUDE 14.3% | Claim |
| 23 | Promptless | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 2 first pick 0% | — | CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 24 | windsurf.com | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 2.5 first pick 50% | — | CHATGPT 14.3%PERPLEXITY 14.3% | Claim |
| 25 | mkdocs.org | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 3 first pick 0% | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 26 | doxygen.nl | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 3.5 first pick 0% | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 27 | Knowl.ai | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 4 first pick 0% | — | GEMINI 14.3%PERPLEXITY 14.3% | Claim |
| 28 | Javadoc | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 6 first pick 0% | — | GEMINI 14.3%CLAUDE 14.3% | Claim |
| 29 | workik.com | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 8.5 first pick 0% | — | GEMINI 14.3%CLAUDE 14.3% | Claim |
| 30 | readthedocs.org | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 9.5 first pick 50% | — | GEMINI 14.3%PERPLEXITY 14.3% | Claim |
| 31 | Kapa | 7.1% 95% CI 2–22.6% 2 mentions · avg pos 11.5 first pick 0% | — | GEMINI 14.3%PERPLEXITY 14.3% | Claim |
| 32 | DeepWiki | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | CHATGPT 14.3% | Claim |
| 33 | dotnet.github.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | PERPLEXITY 14.3% | Claim |
| 34 | gitread.dev | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | CLAUDE 14.3% | Claim |
| 35 | readmecodegen.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | CLAUDE 14.3% | Claim |
| 36 | rivereditor.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | GEMINI 14.3% | Claim |
| 37 | Swagger | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | PERPLEXITY 14.3% | Claim |
| 38 | swagger.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 1 first pick 100% | — | PERPLEXITY 14.3% | Claim |
| 39 | ollama.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 2 first pick 0% | — | GEMINI 14.3% | Claim |
| 40 | postman.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 2 first pick 0% | — | GEMINI 14.3% | Claim |
| 41 | TSDoc | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 2 first pick 0% | — | CLAUDE 14.3% | Claim |
| 42 | stoplight.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 3 first pick 0% | — | GEMINI 14.3% | Claim |
| 43 | taskade.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 3 first pick 0% | — | GEMINI 14.3% | Claim |
| 44 | codeium.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 45 | ReadmeBuddy | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | GEMINI 14.3% | Claim |
| 46 | tabnine.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 47 | Theneo | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | CHATGPT 14.3% | Claim |
| 48 | treblle.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | CLAUDE 14.3% | Claim |
| 49 | eesel.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 4 first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 50 | CodeSee | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 5 first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 51 | typedoc.org | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 5 first pick 0% | — | CHATGPT 14.3% | Claim |
| 52 | marketplace.visualstudio.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 6 first pick 0% | — | GEMINI 14.3% | Claim |
| 53 | apidog.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 7 first pick 0% | — | CLAUDE 14.3% | Claim |
| 54 | docker.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 7 first pick 0% | — | GEMINI 14.3% | Claim |
| 55 | docsie.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 7 first pick 0% | — | GEMINI 14.3% | Claim |
| 56 | bit.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 8 first pick 0% | — | GEMINI 14.3% | Claim |
| 57 | documentation.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 8 first pick 0% | — | GEMINI 14.3% | Claim |
| 58 | CodeGPT | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 11 first pick 0% | — | GEMINI 14.3% | Claim |
| 59 | architecturediagram.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 12 first pick 0% | — | GEMINI 14.3% | Claim |
| 60 | GPT | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 12 first pick 0% | — | GEMINI 14.3% | Claim |
| 61 | tembo.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 12 first pick 0% | — | GEMINI 14.3% | Claim |
| 62 | eraser.io | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 13 first pick 0% | — | GEMINI 14.3% | Claim |
| 63 | miro.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 14 first pick 0% | — | GEMINI 14.3% | Claim |
| 64 | lucidchart.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 15 first pick 0% | — | GEMINI 14.3% | Claim |
| 65 | Docsify | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 16 first pick 0% | — | GEMINI 14.3% | Claim |
| 66 | edraw.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 16 first pick 0% | — | GEMINI 14.3% | Claim |
| 67 | infrasketch.net | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 17 first pick 0% | — | GEMINI 14.3% | Claim |
| 68 | grammarly.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 18 first pick 0% | — | GEMINI 14.3% | Claim |
| 69 | Hix AI | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 19 first pick 0% | — | GEMINI 14.3% | Claim |
| 70 | slatedocs.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 19 first pick 0% | — | GEMINI 14.3% | Claim |
| 71 | clickhelp.com | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 20 first pick 0% | — | GEMINI 14.3% | Claim |
| 72 | WriteAssist | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 20 first pick 0% | — | GEMINI 14.3% | Claim |
| 73 | kapa.ai | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 20 first pick 0% | — | GEMINI 14.3% | Claim |
| 74 | Hashnode AI | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 21 first pick 0% | — | GEMINI 14.3% | Claim |
| 75 | Komment | 3.6% 95% CI 0.6–17.7% 1 mentions · avg pos 21 first pick 0% | — | GEMINI 14.3% | Claim |
| 76 | archbee.com | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 77 | docny.io | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 78 | Express | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CHATGPT 14.3% | Claim |
| 79 | fastapi.tiangolo.com | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CHATGPT 14.3% | Claim |
| 80 | Fern Docs | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 81 | Mintlify Writer | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 82 | redocly.com | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 83 | Zencoder | 3.6% 95% CI 0.6–17.7% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
Reading the numbers: Share is a point estimate on 28 sampled answers, so each row also shows its 95% CI — the Wilson score interval around that share. When two products' intervals overlap, the gap between them isn't statistically meaningful at this sample size. First pick is the share of a product's recommending answers where it was named first, which separates “always mentioned” from “usually the top recommendation”. Full methodology.
Independence: Orbator customers are badged for disclosure. Customer status does not affect prompts, sampling, extraction, or ranking — see the methodology. Your product on this list? Claim it to see the prompts behind your rank and track it weekly.
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Head-to-head pages for products ranked in AI tools for developers writing documentation. Each one sets out sourced facts side by side, plus which product AI assistants recommend more, engine by engine.
Mintlify ranks first and was recommended in 55.6% of 63 sampled answers in the 4-week window to 2026-09-05. It over-indexed on the alternatives prompt, recommended in 100% of those 9 runs. The mention breakdown splits into 20 recommended and 15 listed. Engine spread runs from 85.7% of Grok's 7 answers down to 42.9% of Perplexity's 14 answers.
GitBook ranks second at 41.3% of 63 sampled answers in the same window, and it also over-indexed on the alternatives prompt at 100% of 9 runs. Breakdown of 15 recommended against 11 listed. Its highest engine was Grok at 85.7% of 7 answers, its lowest ChatGPT at 21.4% of 14 answers.
ReadMe ranks third at 39.7% of 63 sampled answers, over-indexing on the prompt about generating README files from code, recommended in 100% of those 9 runs. Breakdown of 11 recommended against 14 listed. Highest was ChatGPT at 50% of 14 answers, lowest Claude, Gemini and Perplexity at 35.7% of 14 answers each.
Git ranks fifth at 30.2% of 63 sampled answers and over-indexed on the prompt about keeping documentation in sync with code changes, recommended in 100% of those 9 runs. Breakdown of 5 recommended against 14 listed. Grok gave it 85.7% of 7 answers, Claude and Perplexity 14.3% of 14 answers each. Pricing is listed as Git: Free, last verified 2026-09-05. Buyers looking for a hosted docs product rather than version control should read that narrow prompt carefully.
All five engines shared the same leader among the top five. Claude recommended Mintlify most across its 14 answers, as did Gemini across its 14, Grok across its 7, ChatGPT across its 14 and Perplexity across its 14. No split at the top of this category in the 4-week window to 2026-09-05.
The disagreement sits lower down. Git shows the widest gap between engines. Claude recommended it in 14.3% of its 14 answers. Grok recommended it in 85.7% of its 7 answers. That is a spread of 71.4 points on the same product. Grok also carries the smallest run count of the five engines at 7, so its shares rest on fewer answers than the others.
This is the first measured window on record for the category. It covers 2026-08-08 to 2026-09-05, 28 days, with 63 sampled answers across 5 engines. There is no prior window to compare against, so no entries, exits or share changes are reported yet.
Mintlify leads it. It was recommended in 55.6% of the 63 sampled answers, and it was the leading recommended product on every engine measured, Claude, Gemini, Grok, ChatGPT and Perplexity. GitBook follows at 41.3% and ReadMe at 39.7% of the same 63 answers. Git sits fifth at 30.2%, with the widest engine spread in the top five, 85.7% of Grok's 7 answers against 14.3% of Claude's 14 answers. The next window will give the first comparison point.
Every number on this page is measured from sampled answers, and those answers are kept. The archive holds dated excerpts of what each engine answered, never full answers. Read the answer archive for ai tools for developers writing documentation to see the excerpts by date and engine, or view the ranking history to see what entered and left this ranking and when.
Across 28 sampled AI answers from 4 engines (Aug 21, 2026 to Sep 18, 2026), Mintlify is recommended most often for ai tools for developers writing documentation, appearing in 46.4% of recommendations, followed by ReadMe (32.1%). This is a measurement of what AI assistants recommend, not an editorial verdict.
ChatGPT recommends ReadMe most often for ai tools for developers writing documentation. It appears as a recommendation in 71.4% of ChatGPT's sampled answers in this window (Aug 21, 2026 to Sep 18, 2026). Other engines answer differently. The per-engine breakdown in the ranking shows each one.
Orbator samples AI answers to buyer questions across 4 engines and counts how often each product is recommended. No product pays for placement. The ai tools for developers writing documentation ranking is based on 28 answers in the current 4-week window (Aug 21, 2026 to Sep 18, 2026). Full methodology is published at https://www.orbator.io/ai-index/methodology.
Verified facts for the most-recommended products — each sourced and dated. No editorial scoring, just the data side by side.
| Gitgit-scm.com | Notion AInotion.com | Document360document360.com | Ollamaollama.com | Dockerdocker.com | |
|---|---|---|---|---|---|
| Pricing | Git: Free ↗ sourceverified Sep 5, 2026 | Plus: $10 a month (free tier available) ↗ sourceverified Sep 5, 2026 | — | Pro: $20 a month, $200 a year (free tier available) ↗ sourceverified Sep 5, 2026 | Pro: $11 a month, $9 a year (free tier available) ↗ sourceverified Sep 5, 2026 |
| Features | speed and efficiency ↗ sourceverified Sep 5, 2026 | Public API ↗ sourceverified Sep 5, 2026 | Embedded help center ↗ sourceverified Sep 5, 2026 | Tool calling ↗ sourceverified Sep 5, 2026 | Docker Hub ↗ sourceverified Sep 5, 2026 |
| Platforms | — | Web ↗ sourceverified Sep 5, 2026 | — | — | Linux ↗ sourceverified Sep 5, 2026 |
| Integrations | — | Slack ↗ sourceverified Sep 5, 2026 | Google Tag Manager ↗ sourceverified Sep 5, 2026 | VS Code ↗ sourceverified Sep 5, 2026 | — |
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