# AI Overviews Citation Statistics: Which Sources Google Cites

YouTube, Reddit and Facebook hold 55% of the top-50 citation share in Google AI Overviews. Most cited pages sit outside the organic top 10, and nearly half change between checks.

_Source: https://mentionova.com/blog/ai-overviews-citation-statistics_

- **Author:** [Jimmy Pal](https://mentionova.com/authors/jimmy-pal), Founder, GTM 8020
- **Published:** 2026-11-04

YouTube earns 24.5% of the citations among the 50 domains Google AI Overviews cite most. Reddit earns 18.1% and Wikipedia 4.4% (Ahrefs, November 2026). Estimates of how many cited pages also rank in Google's organic top 10 run from 17% to 43%, depending on the study and how it counts. Below are the citation statistics for Google AI Overviews, each from an original study or from Google. Every source was read on 4 November 2026.

**[Start a free trial, no card. See which pages Google AI Overviews cite for your buyers' questions, and whether yours is one of them.](https://app.mentionova.com/login?mode=signup&utm_source=blog&utm_medium=content&utm_campaign=ai-overviews-citation-statistics&utm_content=hero)**

## What are the key takeaways?

-   **YouTube is the most-cited domain in AI Overviews.** It holds 24.5% of citations among the top 50 cited domains, with 1,231,678 distinct pages cited (Ahrefs Brand Radar, November 2026).
-   **Four platforms take 63.6% of the top-50 citation share.** YouTube, Reddit, Facebook and google.com hold 24.5%, 18.1%, 12.4% and 8.6% respectively.
-   **Most citations do not come from the organic top 10.** Conductor puts the top-10 share at 43% across 167.9 million citations. Ahrefs puts it at 38% and BrightEdge at 17%.
-   **Ranking first still gives the best odds.** A page in position one is cited in 24.9% of AI Overviews on that search; at position 10 the rate is 10.2% (Conductor).
-   **Citations churn fast.** Between two consecutive checks of the same query, 45.5% of the cited URLs are new (Ahrefs, 43,000 keywords).
-   **Google sets no extra requirements.** A page has to be indexed and eligible to show with a snippet. Google lists no other technical requirement.

## How many sources does a Google AI Overview cite?

A Google AI Overview cites 8 sources on average, and half cite 7 or fewer (Surfer). Only 2.7% cite more than 25. seoClarity found that a typical AI Overview includes 3 URLs from the organic top 20, down from 5 in May 2025. That leaves a small number of slots per query, so each citation is closely contested.

1.  **8 sources per AI Overview on average; half show 7 or fewer.** Source: [Surfer, AI Overview sources study, 9 September 2026](https://surfer.ai/blog/ai-overviews-sources/).
2.  **2.7% of AI Overviews cite more than 25 sources.** Source: [Surfer, 9 September 2026](https://surfer.ai/blog/ai-overviews-sources/).
3.  **AI Overviews include 3 URLs from the organic top 20 on average, down from 5 in May 2025.** Source: [seoClarity, AIO and organic rankings overlap, October 2025](https://www.seoclarity.net/research/aio-rankings-overlap).
4.  **76% of 10,000 sampled keywords triggered an AI Overview.** Source: [Surfer, AIO citation sources, 17 September 2026](https://surfer.ai/blog/ai-overviews-citation-sources/).
5.  **AI Overviews appeared on 48% of BrightEdge's tracked queries in February 2026, up from 31% in February 2025.** Source: [BrightEdge, AI Overviews at the one-year mark](https://www.brightedge.com/resources/weekly-ai-search-insights/ai-overviews-one-year-presence-size-citing).

For click-through and traffic effects, see our [AI Overviews CTR statistics](https://mentionova.com/blog/ai-overviews-ctr-statistics).

## Which domains do Google AI Overviews cite most?

YouTube leads the domains Google AI Overviews cite, with 24.5% of mention share among the top 50 cited domains. Reddit has 18.1%, Facebook 12.4%, google.com 8.6% and Instagram 5.4%. Ahrefs measured this across more than 3 million US queries in November 2026. Large user-generated platforms dominate. Publishers and brand sites each hold under 1%.

| Rank | Domain | Mention share | Pages cited | Change in citing answers vs October |
| --- | --- | --- | --- | --- |
| 1 | youtube.com | 24.5% | 1,231,678 | \-11% |
| 2 | reddit.com | 18.1% | 478,918 | \-21% |
| 3 | facebook.com | 12.4% | 426,111 | \-2% |
| 4 | google.com | 8.6% | 493,033 | \-17% |
| 5 | instagram.com | 5.4% | 168,638 | \-20% |
| 6 | quora.com | 4.4% | 108,149 | \-22% |
| 7 | en.wikipedia.org | 4.4% | 62,881 | \-14% |
| 8 | tiktok.com | 3.0% | 90,086 | \-23% |
| 9 | amazon.com | 2.5% | 69,939 | \-31% |
| 10 | walmart.com | 0.8% | 25,429 | \-27% |

Source for the table and items 6 to 9: [Ahrefs, the 50 most-cited websites in Google AI Overviews, updated 3 November 2026](https://ahrefs.com/blog/most-cited-domains-ai-overviews/). Mention share is a domain's citations as a percentage of the summed citations of the top 50 sources.

6.  **The top 10 domains hold 84.1% of the top-50 mention share.** Every domain after Walmart holds 0.8% or less.
7.  **Trustpilot was the only returning top-50 domain with more citing answers than in October**, up 1%. Every other returning domain fell.
8.  **Four domains entered the top 50 in November 2026**: Merriam-Webster, Carfax, WalletHub and Mayo Clinic.
9.  **Healthline (0.7%), NerdWallet (0.6%) and Forbes (0.6%) are the highest-ranked publishers**, at 13th to 15th.

## How much do YouTube, Reddit and Wikipedia contribute to AI Overview citations?

YouTube, Reddit and Wikipedia together hold 47.0% of the top-50 citation share in Google AI Overviews: 24.5%, 18.1% and 4.4%. YouTube URLs also make up 5.6% of every AI Overview URL in Ahrefs' 4-million-URL study. Brand mentions on YouTube correlate more strongly with AI visibility than any other factor Ahrefs tested.

10.  **YouTube URLs are 5.6% of all AI Overview citations** in a dataset of 4 million cited URLs. Source: [Ahrefs, 38% of AI Overview citations pull from the top 10, 2 March 2026](https://ahrefs.com/blog/ai-overview-citations-top-10/).
11.  **18.2% of cited pages that do not rank in the top 100 are YouTube URLs.** Source: [Ahrefs, 2 March 2026](https://ahrefs.com/blog/ai-overview-citations-top-10/).
12.  **YouTube's AI Overview citations grew 34% over the six months to March 2026.** Source: [Ahrefs, 2 March 2026](https://ahrefs.com/blog/ai-overview-citations-top-10/).
13.  **YouTube mentions have a 0.737 correlation with AI visibility**, the strongest of every factor across ChatGPT, AI Mode and AI Overviews in a study of 75,000 brands. Branded web mentions follow at 0.66 to 0.71. Source: [Ahrefs, AI brand visibility correlations, December 2025](https://ahrefs.com/blog/ai-brand-visibility-correlations/).
14.  **Reddit has 478,918 cited pages; Wikipedia has 62,881.** Wikipedia matches Quora's 4.4% share with 62,881 pages against Quora's 108,149. Source: [Ahrefs, November 2026](https://ahrefs.com/blog/most-cited-domains-ai-overviews/).

For Reddit across every AI engine, see our [Reddit AI citation statistics](https://mentionova.com/blog/reddit-ai-citation-statistics).

## How much do AI Overview citations overlap with the organic top 10?

Across five original studies, between 17% and 43% of AI Overview citations also rank in the organic top 10. Conductor's 2026 analysis of 167.9 million citations puts it at 43%. Ahrefs found 38% and BrightEdge 17%. Surfer found that 67.82% of cited pages miss the top 10 for both the query and its fan-outs.

| Study | Data period | Sample | Cited pages in organic top 10 |
| --- | --- | --- | --- |
| Conductor | 15 June to 15 August 2026 | 167,867,680 citations, US | 43% |
| Ahrefs | Published 2 March 2026 | 863,000 SERPs, 4 million cited URLs | 37.1% (blue links only) |
| Surfer | Published 17 September 2026 | 10,000 keywords, query plus fan-outs | 32.18% |
| BrightEdge | February to July 2025 | BrightEdge keyword set | 16.1% to 16.9% per month |
| seoClarity | 12 October 2025 | 362,000 keywords, 5.1 million citations | 56% from the top 20 |

15.  **43% of AI Overview citations rank in the organic top 10; 57% do not.** Source: [Conductor, AIO vs organic rankings, updated 25 September 2026](https://www.conductor.com/academy/aio-vs-organic-rankings/).
16.  **37.9% of cited URLs appear in the first 10 result blocks of the page; 31.2% sit in blocks 11 to 100 and 31.0% beyond 100.** Counting blue links only, the split is 37.1%, 26.2% and 36.7%. Source: [Ahrefs, 2 March 2026](https://ahrefs.com/blog/ai-overview-citations-top-10/).
17.  **Ahrefs' top-10 overlap fell from 76% in July 2025 to 38%** after AI Overviews moved to Gemini 3 in January 2026. Source: [Ahrefs, 2 March 2026](https://ahrefs.com/blog/ai-overview-citations-top-10/).
18.  **67.82% of cited pages do not rank in the top 10 for the query or any of its fan-outs.** For the three citations visible without expanding, the figure is 45.86%. Source: [Surfer, 17 September 2026](https://surfer.ai/blog/ai-overviews-citation-sources/).
19.  **Cited sources ranking anywhere in the top 100 rose from 48.7% to 53.1%** between February and July 2025, while top-10 overlap stayed flat. Source: [BrightEdge](https://www.brightedge.com/resources/weekly-ai-search-insights/ai-overviews-one-year-presence-size-citing).
20.  **90% of AI Overviews cite at least one top-10 URL, and 94% cite at least one top-20 URL.** Source: [seoClarity, October 2025](https://www.seoclarity.net/research/aio-rankings-overlap).
21.  **44% of AI Overview citations come from beyond the top 20.** Source: [seoClarity, October 2025](https://www.seoclarity.net/research/aio-rankings-overlap).

## Why do the AI Overview overlap studies disagree?

The overlap studies disagree because they count different things. Some count shares of all citations, others the share of AI Overviews with at least one ranked page. Some check only the main query, while Surfer also checks fan-out queries. Data dates differ too: Ahrefs connects its drop from 76% to 38% with the move to Gemini 3.

seoClarity shows the effect: 90% of AI Overviews cite any top-10 page, yet per citation the top 20 supplies only 56%. Conductor's 43% and Ahrefs' 37.1% are both per-citation figures from different samples and windows.

Fan-out queries explain more of the gap. Google says AI Overviews and AI Mode "may use a 'query fan-out' technique — issuing multiple related searches across subtopics and data sources." A page can be missing from the top 10 for the typed query and still rank for a sub-query that Google ran on the user's behalf.

## Does ranking higher raise the odds of an AI Overview citation?

Ranking higher raises the odds of an AI Overview citation at every position. Conductor found that the AI Overview cites a position-one page 24.9% of the time, falling to 10.2% at position 10. seoClarity measured 43% at position one and 7% at position 20. Even a first-place page goes uncited in most AI Overviews.

| Organic position | Cited in the AI Overview (Conductor) | Cited in the AI Overview (seoClarity) |
| --- | --- | --- |
| 1 | 24.9% | 43% |
| 2 | 21.1% | 37% |
| 3 | 17.9% | 31% |
| 10 | 10.2% | Not reported |
| 20 | Not measured | 7% |

22.  **Position one pages are cited 2.5 times as often as position 10 pages.** Source: [Conductor, 2026](https://www.conductor.com/academy/aio-vs-organic-rankings/).
23.  **Position one supplies 8.5% of all AI Overview citations, position two 6.6% and position three 5.3%.** The top three positions together supply just over 20%. Source: [Conductor, 2026](https://www.conductor.com/academy/aio-vs-organic-rankings/).
24.  **Of the citations seoClarity traced to the top 20, 32% came from positions 1 to 3, 41% from 4 to 10 and 27% from 11 to 20.** Source: [seoClarity, October 2025](https://www.seoclarity.net/research/aio-rankings-overlap).
25.  **When an AI Overview cites one source, it matches the top 10 89% of the time.** Source: [seoClarity, October 2025](https://www.seoclarity.net/research/aio-rankings-overlap).

**[Track the questions where you rank but go uncited. Start a free trial, no card.](https://app.mentionova.com/login?mode=signup&utm_source=blog&utm_medium=content&utm_campaign=ai-overviews-citation-statistics&utm_content=mid)**

## How does AI Overview citation overlap vary by industry?

AI Overview citation overlap with the organic top 10 ranges from 24.0% in healthcare to 9.3% in restaurants (BrightEdge, nine industries). Healthcare, B2B tech, education and insurance sit in the low 20s. Entertainment, travel and eCommerce rose by 10 to 15 points in a year, but more than 80% of their citations still come from outside page one.

| Industry | Top-10 overlap a year earlier | Top-10 overlap now | Change |
| --- | --- | --- | --- |
| Healthcare | 23.9% | 24.0% | +0.1 pp |
| Education | 26.9% | 23.1% | \-3.8 pp |
| B2B tech | 23.9% | 22.6% | \-1.3 pp |
| Insurance | 22.7% | 22.4% | \-0.3 pp |
| Entertainment | 3.2% | 18.5% | +15.2 pp |
| Travel | 5.7% | 17.7% | +12.0 pp |
| eCommerce | 2.9% | 13.4% | +10.5 pp |
| Finance | 7.6% | 11.3% | +3.7 pp |
| Restaurants | 5.1% | 9.3% | +4.2 pp |

Source: [BrightEdge, AI Overviews at the one-year mark](https://www.brightedge.com/resources/weekly-ai-search-insights/ai-overviews-one-year-presence-size-citing).

26.  **Finance has 11.3% top-10 overlap**, so close to 9 in 10 finance citations come from outside page one. Source: BrightEdge, as above.
27.  **Healthcare also had the most overlapping URLs per AI Overview in seoClarity's industry cut** (May 2025 data). Source: [seoClarity](https://www.seoclarity.net/research/aio-rankings-overlap).

## How often do AI Overview citations change?

AI Overview citations change on most checks. Ahrefs tracked 43,000 keywords for a month and found a 70% chance that an AI Overview's content differs from one check to the next. On average, 45.5% of cited URLs are new between consecutive checks. Content lasts 2.15 days on average before it changes.

28.  **70% chance that an AI Overview changes between consecutive observations.** Source: [Ahrefs, AI Overviews change every 2 days, 11 November 2025](https://ahrefs.com/blog/ai-overview-change/).
29.  **54.5% of cited URLs carry over between consecutive checks of the same query; 45.5% are new.** Source: [Ahrefs, 11 November 2025](https://ahrefs.com/blog/ai-overview-change/).
30.  **AI Overview content lasts 2.15 days on average before it changes.** Source: [Ahrefs, 11 November 2025](https://ahrefs.com/blog/ai-overview-change/).

A single check of an AI Overview is a snapshot, not a ranking. Our [AI citation volatility statistics](https://mentionova.com/blog/ai-citation-volatility-statistics) compare churn across engines.

## What does Google say makes a page eligible for an AI Overview citation?

To be eligible, a page must be indexed and eligible to appear in Google Search with a snippet. Google says "there are no additional technical requirements" and no special optimizations are needed. It adds that AI Overviews show only when they add to classic Search, and that a page meeting every requirement is still not guaranteed to be served.

31.  **The only technical requirement is that a page is indexed and eligible to show with a snippet.** Source: [Google Search Central, AI features and your website, last updated 10 December 2025](https://developers.google.com/search/docs/appearance/ai-features).
32.  **AI Overviews and AI Mode may use different models and techniques**, so the links they show will vary for the same question. Source: [Google Search Central](https://developers.google.com/search/docs/appearance/ai-features).

## Why isn't my brand cited in Google AI Overviews?

A brand usually goes uncited in AI Overviews for one of three reasons. Its page does not rank for the query or its fan-outs. The answer is drawn from YouTube, Reddit or review sites where the brand is missing. Or it holds a citation only part of the time. A noindex tag or snippet block rules a page out entirely.

Work through the checks in this order:

-   **Eligibility.** Confirm the page is indexed and not blocked from snippets. Google lists this as the only technical requirement.
-   **Fan-out coverage.** Position one earns a 24.9% citation rate in Conductor's data, and 57% of citations go to pages outside the top 10. Google confirms it runs fan-out searches, so cover the sub-questions buyers ask, not only the head term.
-   **Third-party presence.** YouTube, Reddit and Facebook hold 55.0% of top-50 citation share. A brand that is absent from those platforms is absent from most of the source pool.
-   **Repeat measurement.** With 45.5% of URLs changing between checks, track the same queries over weeks before you conclude anything.

## How do you track Google AI Overview citations for your brand?

You track AI Overview citations by running a fixed set of buyer queries on a schedule. Each time, log whether your domain is cited, which competitors are named and which URLs Google chose. Mentionova runs the same tracked prompts every week across six engines, including Google AI Overviews. It logs mentions, citations, position and sentiment for each engine.

What it covers:

-   **Answers "why isn't my brand in AI Overviews?"** Each run shows who was named instead of you and which sources the engine trusted.
-   **Separates engines**, so a gap in AI Overviews alone shows up apart from a gap in ChatGPT or Perplexity.
-   **Keeps the history**, which matters when nearly half the cited URLs change between checks.

Limits: it reports on the prompts you track, not every Google search. Starter is $99 a month billed annually ($125 monthly) and covers three engines: ChatGPT, Perplexity and Google. Scale is $320 a month billed annually ($400 monthly) and covers all six. Every paid plan starts with a free trial, no card. See [pricing](https://mentionova.com/pricing) and our [Google AI Overview statistics](https://mentionova.com/blog/google-ai-overview-statistics) for reach and usage data.

## Where does each number come from?

Every figure on this page comes from an original study or from Google's own documentation, and all were read on 4 November 2026. The studies use different samples, periods and counting methods, so each figure carries its source and date to let you compare like with like.

-   Ahrefs: most-cited websites in Google AI Overviews (Brand Radar, US, November 2026, updated 3 November 2026); AI Overview citations and the top 10 (2 March 2026); AI Overviews change every 2 days (11 November 2025); AI brand visibility correlations across 75,000 brands.
-   Conductor: AI Overviews and organic rankings, 167,867,680 citations (updated 25 September 2026).
-   BrightEdge: AI Overviews at the one-year mark, presence, size and citations.
-   seoClarity: the overlap between AI Overviews and organic rankings (updated October 2025).
-   Surfer: AIO citation sources (17 September 2026); AI Overview sources study (9 September 2026).
-   Google Search Central: AI features and your website (last updated 10 December 2025).
-   Mentionova plan details: mentionova.com/pricing and the AI visibility tracker page, read 4 November 2026.

## What do people ask about AI Overview citations?

### What are the most cited domains in Google AI Overviews?

YouTube is first with 24.5% of mention share among the top 50 cited domains. Reddit has 18.1%, Facebook 12.4%, google.com 8.6%, Instagram 5.4%, and Quora and Wikipedia 4.4% each. That is from Ahrefs Brand Radar, across more than 3 million US queries in November 2026.

### Do you need to rank in the top 10 to be cited in an AI Overview?

No. Conductor found 57% of AI Overview citations go to pages outside the organic top 10. Ranking still helps. A position-one page is cited 24.9% of the time, against 10.2% at position 10.

### How many links does an AI Overview show?

Surfer measured 8 sources per AI Overview on average, with half showing 7 or fewer and 2.7% showing more than 25. Only the first three are visible without expanding the source list.

### Why does YouTube get cited so often in AI Overviews?

YouTube is one of the largest sites on the web and ranks for a huge range of queries. Ahrefs found 18.2% of cited pages that do not rank in the top 100 are YouTube URLs. YouTube mentions also correlated most strongly with AI visibility (0.737) across 75,000 brands.

### Do AI Overview citations change over time?

Yes, often. Ahrefs found a 70% chance that an AI Overview changes between consecutive checks. On average, 45.5% of the cited URLs are new each time, and content changes every 2.15 days.

### Does Google require schema or special markup for AI Overviews?

No. Google says there are no additional technical requirements and no special optimizations needed. A page must be indexed and eligible to appear in Search with a snippet. Any structured data should match the visible text on the page.

### How can I see whether AI Overviews cite my site?

Run your target queries repeatedly and log the cited URLs each time, since 45.5% of them change between checks. A tracker such as Mentionova does this every week across six engines, including Google AI Overviews.

**[See which sources Google AI Overviews cite for your category. Start a free trial, no card.](https://app.mentionova.com/login?mode=signup&utm_source=blog&utm_medium=content&utm_campaign=ai-overviews-citation-statistics&utm_content=close)**

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