Google AI Overviews Statistics (2026)

A data roundup of how often Google shows AI Overviews, how many people use them, what happens to clicks and news referrals, and which queries trigger them.

Google says AI Overviews now have over 2.5 billion users each month, up from over 2 billion in Q2 2025, across more than 200 countries and 40 languages. Pew Research Center found an AI summary on 18% of Google searches by U.S. adults in March 2025, and that users clicked a traditional result on 8% of visits with a summary versus 15% without. Cloudflare measured Google referrals to news sites down 9% in March 2025 versus January. These are the numbers behind picking AI visibility tools, GEO tools and AI Overviews tracking tools.

Key takeaways

• Over 2.5 billion monthly AI Overviews users (Google, June 2026)
• Over 2 billion monthly users as of Q2 2025; 1.5 billion as of Q1 2025 (Google Q2, Q1)
• AI Mode surpassed 1 billion monthly users (Google, June 2026)
• 18% of Google searches by Pew’s U.S. panel produced an AI summary in March 2025 (Pew)
• 8% click rate on traditional results with an AI summary vs 15% without (Pew)
• 1% of visits with an AI summary clicked a citation inside it (Pew)
• 60% of question-word searches triggered an AI summary (Pew)
• 10%+ more queries globally for the types that show AI Overviews (Google Q2 2025)
• Google news referrals down 9% (March) and 15% (April) vs January 2025 (Cloudflare)
• 12.8% of Google searches by volume showed AIOs in Ahrefs’ index (Ahrefs)
• 97.7% of U.S. AIO keywords in Ahrefs were informational (Ahrefs)

How many people use Google AI Overviews?

1. Over 2.5 billion monthly AI Overviews users as of Alphabet’s June 2026 investor presentation (Google).
2. Over 2 billion monthly users as of Google’s Q2 2025 earnings (Google Q2 2025).
3. More than 1.5 billion monthly users as of Q1 2025 (Google Q1 2025).
4. AI Mode has already surpassed 1 billion monthly users (Google).
5. Search queries reached an all-time high last quarter as people used AI-powered features more (Google).
6. Available in more than 200 countries and territories and more than 40 languages after the May 2025 expansion (Google).
7. In Q1 2025 the feature was already in more than 15 languages across 140 countries (Google Q1 2025).
8. AI Overviews drive over 10% more queries globally for the types of queries that show them (Google Q2 2025).
9. In the U.S. and India, Google reported an over 10% increase in usage for those query types (Google).
10. AI Overviews are powered by Gemini 2.5 as of Q2 2025 (Google Q2 2025).
11. Over 2 billion people use Google Search every day (Google Q1 2025).
12. Google handles more than 5 trillion searches a year (Google Q1 2025).

How often do AI Overviews appear?

13. 18% of Google searches in Pew’s March 2025 U.S. panel produced an AI summary (Pew).
14. That is 12,593 of 68,879 unique Google searches in the study (Pew).
15. 58% of the 900 U.S. adults in the panel ran at least one search that month that produced an AI summary (Pew).
16. Ahrefs found AIOs on about 9.46% of keywords in its desktop index (~55.8 million of 590 million) (Ahrefs).
17. By search volume, Ahrefs estimated 12.8% of Google searches in its index showed AIOs as of June 15, 2025 (~23 billion of ~180 billion monthly) (Ahrefs).
18. In the U.S., Ahrefs saw AIOs on about 16% of desktop keywords (Ahrefs).
19. Country keyword shares in Ahrefs: India 16.5%, Brazil 15.5%, UK 12.5% (Ahrefs).

What it means: Pew counts real searches people typed; Ahrefs counts keyword inventories. Both put AI Overviews on a meaningful share of Search, not a rare experiment.

Which queries trigger an AI Overview?

20. Only 8% of one- or two-word searches produced an AI summary (Pew).
21. 53% of searches with 10 or more words produced one (Pew).
22. 60% of searches that began with a question word (who, what, when, why) produced one (Pew).
23. 36% of searches that included both a noun and a verb produced one (Pew).
24. 97.70% of U.S. AIO keywords in Ahrefs were informational intent (Ahrefs).
25. 80.03% were non-branded; 19.97% branded (Ahrefs).
26. Only 6.85% were local intent (Ahrefs).
27. 71.67% of AIO searches in Ahrefs had no CPC data (Ahrefs).

What happens to clicks when an AI Overview appears?

28. Users who saw an AI summary clicked a traditional result on 8% of visits (Pew).
29. Users who did not see one clicked a result on 15% of visits (Pew).
30. Clicks on a link inside the summary happened on just 1% of visits with a summary (Pew).
31. Users ended their browsing session after 26% of pages with an AI summary, versus 16% without (Pew).
32. Around two-thirds of all searches ended with the user staying on Google or leaving without clicking a result link (Pew).
33. Ahrefs says AIOs are reducing clicks by 34.5% (Ahrefs).

What it means: being cited inside the Overview matters more than ranking under it. Track citations with Mentionova or other AI Overviews tracking tools.

What gets cited inside AI Overviews?

34. The median AI summary was 67 words long (Pew).
35. Length ranged from 7 to 369 words (Pew).
36. 88% of summaries cited three or more sources; only 1% cited a single source (Pew).
37. Wikipedia, YouTube and Reddit together made up 15% of AI summary sources and 17% of standard result sources (Pew).
38. 6% of AI Overview sources were .gov sites, versus 2% in standard results (Pew).
39. 5% of AI summaries linked to news websites (Pew).
40. The top 50 domains hold 28.90% of all AIO mentions in Ahrefs (Ahrefs).

How have Google referrals to publishers changed?

41. On Cloudflare’s news-site cohort, Google referrals in March 2025 were about 9% lower than January (Cloudflare).
42. April 2025 was down 15% versus January (Cloudflare).
43. June 2025 matched the roughly 9% January drop again (Cloudflare).
44. Cloudflare ties the timing to AI Overviews upgrades, AI Mode in Labs and European expansions in March 2025 (Cloudflare).
45. Googlebot accounts for 39% of all AI and search crawler traffic on Cloudflare (Cloudflare).
46. Training drives nearly 80% of AI bot activity (Cloudflare).
47. Training’s share of AI crawling rose from 72% in July 2024 to 79% in July 2025; search fell from 26% to 17% (Cloudflare).

What about AI Mode and multimodal Search?

48. AI Mode had over 100 million monthly active users in the U.S. and India as of Q2 2025, before the later 1 billion milestone (Google Q2 2025).
49. On average, AI Mode queries are twice as long as traditional Search queries (Google Q1 2025).
50. Circle to Search is on more than 250 million devices (Google Q1 2025).
51. Circle to Search usage rose nearly 40% in Q1 2025 (Google Q1 2025).
52. Monthly visual searches with Lens increased by 5 billion since the prior October (Google Q1 2025).
53. Google says multimodal Search combined with AI Overviews grew most among younger users (Google Q2 2025).

What to do with this data

1. Write for questions, not two-word heads. Pew’s trigger rates rise sharply for question-shaped and long queries.
2. Measure citations, not only blue-link rank. An 8% click rate with an Overview is not the same as being named inside it. Use AI visibility tools or Mentionova.
3. Treat news and publisher traffic as a separate risk. Cloudflare’s referral drops are for a news cohort; your category may differ.
4. Prioritize trustworthy, citable pages. .gov and reference sources over-index in Overviews relative to classic results.
5. Track Google AI Overviews and AI Mode together. See AI Overviews tracking tools and Goodie alternatives if you are shopping platforms.

How we compiled these statistics

We fetched primary sources on October 19, 2026 and recorded 58 data points in docs/content/stats-ledgers/google-ai-overviews-statistics.json. Every numbered figure above maps to a ledger row with a verbatim quote. Pew figures describe 900 U.S. adults in KnowledgePanel Digital for March 2025 searches. Google user and geography figures are company statements on earnings calls, the Search blog and the June 2026 investor presentation. Cloudflare figures cover a news-related customer cohort on its network, not all publishers. Ahrefs figures come from its keyword and Brand Radar indexes and are not a census of all Google searches. Sources: Alphabet investor presentation, June 2026, Pew Research Center, Google users are less likely to click on links when an AI summary appears, Alphabet Q1 2025 CEO remarks, Alphabet Q2 2025 CEO remarks, Google, AI Overviews expand to 200+ countries, Cloudflare, The crawl-to-click gap, Ahrefs, Insights from 55.8M AI Overviews. Related reading: AI search statistics, AI crawler statistics, SEO statistics, SEO tools.