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AI 引用レポート 2026 年 8 月:今月 AI が引用したもの

月次のデータ調査:2026 年 8 月に 5 つの AI が引用したものを 65009 件の回答で測定し、2026 年 7 月からの変化をまとめました。

公開日:
4/9/2026
-
更新日:
4/9/2026
Sorank が AI の回答 65009 件で測定した、2026 年 8 月に AI が最も多く引用したプラットフォームの棒グラフ
Sorank が AI の回答 65009 件で測定した、2026 年 8 月に AI が最も多く引用したプラットフォームの棒グラフ
Sorank創業者 Thibault Besson-Magdelain

著者について

Thibault Besson-Magdelain

Sorank創業者。SEO歴5年以上、GEOに情熱を注いでいます。

The short answer

In August 2026 the panel measured 65009 answers, against 68240 in July 2026. The most cited platform of the month is Trustpilot at 1.81%, ahead of Wikipedia at 1.39%.

This is the monthly snapshot of the panel: what the AIs cited this month, and what moved since the previous month.

Key figures

  • 301025 AI answers analysed between August 2025 and August 2026
  • 1820738 citations extracted from those answers
  • 131349 distinct domains cited at least once
  • 5 models measured separately: ChatGPT, Gemini, Perplexity, Claude and Grok
  • 79% of the questions asked in French, the rest in English

What the AIs cited in August 2026

  • Trustpilot: 1.81%
  • Wikipedia: 1.39%
  • TripAdvisor: 0.93%
  • Amazon: 0.87%
  • Microsoft: 0.87%
  • Shopify: 0.68%
  • YouTube: 0.58%
  • LinkedIn: 0.56%
  • Facebook: 0.55%
  • Reddit: 0.5%

What moved since last month

  • WordPress: 0.2% this month against 0.22% last month, minus 0.02 points
  • GitHub: 0.16% this month against 0.2% last month, minus 0.04 points
  • Indeed: 0.08% this month against 0.22% last month, minus 0.14 points
  • YouTube: 0.58% this month against 2.76% last month, minus 2.18 points
  • Reddit: 0.5% this month against 1.72% last month, minus 1.22 points
  • Trustpilot: 1.81% this month against 2.92% last month, minus 1.11 points

How to read these numbers

A citation rate of 2% means the source was cited twice for every 100 measured answers. Rates are computed per model against the number of answers of that model, so a model with a smaller sample never distorts a column. A source cited several times inside one answer is counted once per company block, which keeps a single verbose answer from dominating a month.

What changed over 13 months

The panel measured 65009 answers in August 2026 against 68240 the month before. When the size and the mix of the sample move, citations spread differently across sources, which is why most platform rates move from one month to the next even when the underlying number of citations is stable.

What this means in practice

One month is a noisy unit. The panel grew substantially, the question mix changed with it, and most platform rates moved down as citations spread across a wider set of sources. That dispersion is itself the finding: as the sample broadens, concentration falls, and the sources that hold their position through that dilution are the resilient ones. Treat single month movements as direction, and use the three month averages published in the other studies for decisions.

How to use this study

  1. Compare this month against the three month average rather than against a single previous month.
  2. Watch the sources that hold position while the sample grows, since they are the stable ones.
  3. Re-read the study for your sector before acting on a general movement.

How this study was measured

  1. We run a panel of buyer questions every month, the questions people type before choosing a supplier.
  2. Every question is sent to five AI: ChatGPT, Gemini, Perplexity, Claude and Grok.
  3. Every answer is parsed, every cited source is extracted and normalised to a domain and a platform.
  4. The citation rate is the number of citations of a source per 100 measured answers, computed per model so an uneven number of answers per model never distorts a column.
  5. The month is closed, the dataset is rebuilt, and the public files are republished on data.sorank.com.

Limits of this study

  1. This panel is not a neutral sample of the web. The questions come from the sectors our users operate in.
  2. The panel leans French: 237930 answers come from questions asked in French and 63095 from questions asked in English.
  3. Model coverage is uneven: 87008 answers from ChatGPT, 87004 from Perplexity, 87000 from Gemini, 20011 from Claude and 20002 from Grok. The two smallest samples are read as direction rather than as precise values.
  4. A citation is not a click. This study measures what the AIs cite, not what a reader does next.

The dataset behind this study

Every number on this page comes from the public Sorank dataset. The underlying figures, the monthly detail and the filters are available here:

Open the source data on data.sorank.com

Data updated on 2026-08-26.

How to cite this study

This study is free to quote, in an article, a deck or a report. Please cite the source and the measurement period, because the numbers move every month.

Sorank (2026). AI Citation Report, August 2026: What the AIs Cited This Month. Sorank GEO studies, measured on 301025 AI answers collected between August 2025 and August 2026. Available at https://www.sorank.com/data/ai-citation-report-august-2026

Related studies

The same panel, read from another angle:

Measure your own citations

This study describes a market. Sorank measures your site: which questions mention you, which mention someone else, and what to publish to change that, tracked weekly across the same five AI.

Start with 3 days free. A payment card is required to open the trial.

よくある質問

今月、AI が最も多く引用したプラットフォームはどれですか?

Trustpilot(1.81%)がトップで、Wikipedia(1.39%)、TripAdvisor(0.93%)が続きます。完全なランキングはこのページにあり、元データは data.sorank.com で公開しています。

この調査はどのように測定したのですか?

2025 年 8 月から 2026 年 8 月までに 5 つの AI から集めた 301025 件の回答をもとに、引用されたすべての情報源を抽出して正規化しました。引用率は、測定した回答 100 件あたりの引用数です。公開データセットは data.sorank.com にあります。

今月、ほぼすべてのプラットフォームの引用率が下がったのはなぜですか?

パネルが拡大して質問が多様になり、引用がより多くの情報源に分散したからです。サンプルが増えるなかで率が下がっても、引用が減ったとは限りません。より大きな集合の中で、占める割合が小さくなったということです。

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