Google AI Overviews Statistics 2026

Google AI Overviews Statistics 2026

How often AI Overviews appear, what they do to clicks, which queries trigger them, and how unstable their citations are.

Last verified: July 2026Next review: January 202730 sourced statistics

Key Takeaways

  • •AI Overviews appear on roughly 15% to 21% of queries depending on the measurement panel, after peaking near 25% in mid-2025.
  • •AI Overviews cut clicks to the top organic result by 58% as of December 2025, up from 34.5% in March 2025.
  • •Pew found real users clicked a traditional result on only 8% of searches with an AI summary, versus 15% without.
  • •99.9% of AI Overview triggers are informational queries, so transactional and navigational searches remain largely untouched.
  • •Only 37.9% of AI Overview citations rank in the top 10 as of March 2026, down from about 76% in July 2025.
  • •Reddit became the most-cited AI Overview domain after Google's March 2025 core update, at 5.5% citation share.
  • •AI Overviews rewrite themselves every 2.15 days on average with a 70% change rate, yet semantic similarity between versions is 0.95.
  • •AI Mode and AI Overviews cite the same URLs only 13.7% of the time despite agreeing on conclusions 86% of the time.
  • •Google reports 2.5 billion monthly AI Overviews users as of May 2026, while AI Mode handled only 0.34% of searches in early 2026.
  • •Healthcare queries reached 89% AI Overview coverage by late 2025, while shopping queries sit at 3.2%.

How Often AI Overviews Appear

AI Overview prevalence swung sharply through 2025 as Google expanded, pulled back, and recalibrated the feature. Depending on the measurement panel, the feature now appears on roughly 15% to 21% of queries.

  1. 01

    21% of keywords trigger an AI Overview as of September 2025, based on an Ahrefs analysis of 146 million desktop SERPs.

    Source: Ahrefs, 2025

  2. 02

    6.49% of tracked keywords showed an AI Overview in January 2025, surging to 24.61% by July before settling at 15.69% in November, according to Semrush's study of more than 10 million keywords.

    Source: Semrush, 2025

  3. 03

    18% of real-user Google searches produced an AI summary in March 2025, per Pew Research Center's analysis of 68,879 searches from 900 US adults.

    Source: Pew Research Center, 2025

  4. 04

    2 billion people used AI Overviews monthly across more than 200 countries and 40 languages as of July 2025, per Google CEO Sundar Pichai.

    Source: Google via TechCrunch, 2025

  5. 05

    2.5 billion monthly users now see AI Overviews, Google CEO Sundar Pichai said in May 2026.

    Source: Google via CNBC, 2026

  6. 06

    100 million monthly active users had adopted AI Mode in the US and India by July 2025, its first two markets.

    Source: Google via TechCrunch, 2025

  7. 07

    0.34% of Google searches actually routed through AI Mode between January and April 2026, even though Google announced more than 1 billion monthly AI Mode users at I/O 2026.

    Source: SparkToro, 2026

Click-Through Impact

The clearest finding across independent studies is fewer clicks to websites. Panel data from Ahrefs and Pew Research Center point in the same direction, and the effect grew through 2025.

  1. 08

    58% fewer clicks reach the top organic result when an AI Overview is present, per Ahrefs' study of 300,000 keywords using December 2025 Google Search Console data.

    Source: Ahrefs, 2026

  2. 09

    50.8% fewer clicks reach position 2 and 46.4% fewer reach position 3 when an AI Overview appears, so the loss extends well beyond the top spot.

    Source: Ahrefs, 2026

  3. 10

    34.5% was the position-1 click reduction Ahrefs measured in its original March 2025 study, meaning the impact nearly doubled within nine months.

    Source: Ahrefs, 2025

  4. 11

    1.6% is the actual average clickthrough rate for a position-1 result sitting under an AI Overview, versus a predicted 3.7% without one.

    Source: Ahrefs, 2026

  5. 12

    8% of visits to Google results pages with an AI summary ended with a click on a traditional result, versus 15% for pages without one, in Pew Research Center's clickstream data.

    Source: Pew Research Center, 2025

  6. 13

    26% of search visits that included an AI summary ended the user's browsing session entirely, compared with 16% for pages with only traditional results.

    Source: Pew Research Center, 2025

Query Types and Industries

AI Overviews concentrate almost entirely on informational questions, and coverage varies enormously by industry, from near-total in healthcare to almost none in shopping.

  1. 14

    99.9% of keywords that trigger AI Overviews carry informational intent, while transactional queries account for just 1.2% and navigational 0.1%.

    Source: Ahrefs, 2025

  2. 15

    57.9% of question-format queries trigger an AI Overview, compared with 15.5% of non-question queries.

    Source: Ahrefs, 2025

  3. 16

    24.9% of non-branded queries trigger AI Overviews, nearly double the 13.1% rate for branded queries.

    Source: Ahrefs, 2025

  4. 17

    43.6% of Science queries and 43% of Health queries trigger AI Overviews, the highest of any category, versus just 3.2% for Shopping and 5.8% for Real Estate.

    Source: Ahrefs, 2025

  5. 18

    89% of healthcare queries triggered an AI Overview by late 2025, up from 59% in 2023, per BrightEdge tracking.

    Source: BrightEdge, 2025

  6. 19

    57.1% of AI Overview triggers were informational queries by October 2025, down from 91.3% in January, as commercial-intent coverage grew from 8.15% to 18.57% and transactional from 1.98% to 13.94%.

    Source: Semrush, 2025

  7. 20

    7.9% of local searches and 6% of news queries trigger AI Overviews, making them among the least exposed query types.

    Source: Ahrefs, 2025

Where Citations Come From

Google increasingly cites pages that do not rank in traditional results, which makes AI visibility a partly separate game from classic SEO.

  1. 21

    37.9% of AI Overview citations rank in the top 10 search results as of March 2026, down from roughly 76% in July 2025, per Ahrefs' analysis of 4 million cited URLs.

    Source: Ahrefs, 2026

  2. 22

    31% of AI Overview citations rank beyond the top 100 results entirely.

    Source: Ahrefs, 2026

  3. 23

    5.5% of AI Overview citation share belongs to Reddit, which jumped from sixth place (1.3%) to first after Google's March 2025 core update.

    Source: Ahrefs, 2025

  4. 24

    13.7% of citations overlap between AI Mode and AI Overviews for the same query, even though the two systems reach the same conclusion 86% of the time.

    Source: Ahrefs, 2025

  5. 25

    3 URLs from the top 20 organic results appear in the average AI Overview as of October 2025, down from 5 in May 2025, per seoClarity.

    Source: seoClarity, 2025

  6. 26

    28.9% of all AI Overview mentions go to just the top 50 domains, per Ahrefs' study of 55.8 million AI Overviews.

    Source: Ahrefs, 2025

Volatility and Churn

AI Overviews rewrite themselves constantly, but the underlying meaning barely moves. That churn makes single-day visibility checks unreliable.

  1. 27

    2.15 days is the average time before an AI Overview's content changes, based on Ahrefs' month-long tracking of more than 43,000 keywords.

    Source: Ahrefs, 2025

  2. 28

    70% of the time, an AI Overview changes between one observation and the next for the same query.

    Source: Ahrefs, 2025

  3. 29

    0.95 out of 1.0 is the semantic similarity between successive versions of the same AI Overview, meaning the wording churns while the answer's meaning stays put.

    Source: Ahrefs, 2025

  4. 30

    45.5% of cited URLs are entirely new each time an AI Overview refreshes, with only 54.5% carrying over between observations.

    Source: Ahrefs, 2025

How to Cite This Page

APA: Best AEO Tools. (2026). Google AI Overviews Statistics 2026. Retrieved from https://bestaeotools.com/statistics/ai-overviews-statistics

MLA: "Google AI Overviews Statistics 2026." Best AEO Tools, 2026, https://bestaeotools.com/statistics/ai-overviews-statistics.

Chicago: Best AEO Tools. "Google AI Overviews Statistics 2026." Accessed July 2026. https://bestaeotools.com/statistics/ai-overviews-statistics.

Frequently Asked Questions

Ahrefs measured AI Overviews on 21% of keywords in September 2025 across 146 million SERPs, while Semrush tracked 15.69% of keywords in November 2025 after a mid-year peak of 24.61%. Pew Research Center's real-user data found 18% of searches produced an AI summary in March 2025. The honest answer is a range of roughly 15% to 21%, depending on the panel and keyword mix.

Sources

Every statistic on this page links to the publication where the number appears. Data comes from 15 sources.

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