24 Google AI Overviews statistics for 2026

Google AI Overviews (AIO) are the AI-generated summaries Google now stacks above the ten blue links for a growing share of searches. They read the web, synthesize an answer, and cite a handful of sources inline — which means the most valuable real estate on the results page is no longer a rank, it is a citation inside the box.

Most commentary on AIO is vibes. This roundup is not. Twenty-four statistics, five categories, every figure attributed to the study or dataset behind it — primary research from Pew, Ahrefs, Seer Interactive, and Semrush where we could get to it, named aggregators where we could not. Where the sourcing was thin, the stat was cut.

How often AI Overviews show up

1. AI Overviews now reach roughly 2 billion monthly users

The surface is no longer niche. Google states its AI Overviews reach roughly 2 billion monthly users, and the feature is live in 200+ countries and 40+ languages (Google, 2025). Whatever your query mix, a meaningful slice of your audience is meeting an AI answer before they meet your page.

2. Coverage jumped from 6.49% to 24.61% of queries during 2025

The expansion was fast and steep. Semrush's analysis of 10M+ keywords found AI Overviews appeared on 6.49% of queries in January 2025, rising to 24.61% by July 2025 — a near-quadrupling in six months. The rollout is not a pilot; it is the new default surface.

3. By early 2026, coverage nears half of US searches

Depending on the query set, current coverage estimates run from ~25% (Conductor's 21.9M-query benchmark) up to roughly 48% of tracked queries in BrightEdge's early-2026 data, consistent with Google's own "about half" disclosure. Every study reports a different number, and each is correct for its methodology — the direction is not in dispute.

4. 18% of real user searches produced an AI summary

Behavioral data grounds the tracker figures. Pew Research, watching 68,879 real Google searches from 900 US adults in March 2025, found 18% surfaced an AI-generated summary — about one in five searches, from actual browsing behavior rather than a keyword sample.

5. 88% of AI Overviews cite three or more sources

The box is a multi-source composite, not a single winner. In the same Pew study, 88% of AI summaries cited three or more sources. There is room in most answers for several brands — which is exactly why being one of them is a winnable game.

6. Government sources appear 3× more often than in blue links

The source mix inside AIO differs from the ranked results below it. Pew found 6% of AI-summary links point to .gov sites versus just 2% in standard results — a sign the model weights perceived authority differently than the classic ranking algorithm does.

The industries AI Overviews hit hardest

7. Healthcare queries trigger AI Overviews ~88% of the time

Informational, high-consideration verticals are the epicenter. BrightEdge data reports AI Overviews on roughly 88% of healthcare queries in early 2026, up from 72% a year earlier. If you publish health content, the AI answer is effectively the default result.

8. Education coverage surged to ~83% — a 361% jump

No category expanded faster. AI Overview coverage of education queries climbed to ~83%, up from 18% a year earlier per BrightEdge — a 361% increase. Explainer-heavy niches are being absorbed into the answer box first and fastest.

9. B2B technology queries hit ~82% coverage

The shift is not consumer-only. B2B technology queries now surface an AI Overview ~82% of the time, up from 36% (BrightEdge). For software and services buyers who research before they ever talk to sales, the AI summary is increasingly the first vendor impression.

10. Restaurant queries jumped ~680% year over year

Even local and transactional-adjacent categories are moving. AI Overview coverage of restaurant queries rose roughly 680% year over year to ~78% (BrightEdge). The one notable exception is pure e-commerce product queries, where coverage stays low as Google protects transactional intent.

What AI Overviews do to clicks

11. AI Overviews cut clicks to the #1 result by 58%

This is the headline number. Ahrefs, comparing 300,000 keywords in Search Console data, found the presence of an AI Overview cuts the click-through rate of the top organic result by 58%. Ranking first is worth far less than it used to be when the answer sits above you.

12. That impact nearly doubled in eight months

And it is accelerating. Ahrefs' April 2025 measurement was a 34.5% click reduction; by December 2025 the same methodology showed 58%. As Overviews grow larger and more confident, they intercept a bigger share of the click each quarter.

13. Only 8% of users click any link when an AI summary appears

Primary behavioral data tells the same story from the user side. Pew found that when an AI summary is shown, only 8% of users click through to any website, versus 15% without a summary — the click rate is nearly halved by the presence of the box alone.

14. Just 1% of users click a link inside the Overview

The citations themselves are rarely clicked. In the Pew data, only 1% of visits involved clicking a source link within the AI summary. The value of a citation is increasingly the mention and the borrowed trust — not the click that used to follow it.

15. Organic CTR on AIO queries fell 61% year over year

Seer Interactive, tracking 25.1M organic impressions across 42 organizations, found organic CTR on AI Overview queries dropped 61% — from 1.76% to 0.61% — between June 2024 and September 2025. The erosion is measurable at the account level, not just in aggregate keyword studies.

16. Paid CTR on those queries fell even further — 68%

Ads are not immune. The same Seer analysis found paid CTR on AI Overview queries fell 68%, from 19.7% to 6.34%. When the answer is already on screen, both the organic link and the ad below it get skipped.

17. 26% of users end their session after a page with an AI summary

Overviews also raise search abandonment. Pew found 26% of users ended their browsing session right after a results page containing an AI summary, versus 16% without one — the answer satisfied the query and the journey stopped there.

Who AI Overviews choose to cite

18. Reddit is the single most-cited domain in AI answers

The citation pool skews toward community and platform content. Across a 30-million-source analysis spanning AI Overviews and the major answer engines (Peec AI), Reddit ranked as the most-cited domain, followed by YouTube and LinkedIn. Presence on the platforms models trust is part of the AEO surface area.

19. The top 5 domains capture ~38% of all citations

Citations are highly concentrated. The same body of research found the top 5 domains account for ~38% of citations, the top 10 for ~54%, and the top 20 for ~66%. A small set of trusted sources dominates — which is both the barrier and the opportunity.

20. Brand-owned websites are now ~31% of AI Overview citations

First-party content is gaining ground. Brand and company websites now make up roughly 31% of AI Overview citations, up from 26% in early 2025 (Presenc AI). Genuinely useful owned content is being rewarded, not routed around.

21. Cited brands earn ~35% more organic clicks than uncited ones

Being in the box still pays. Seer Interactive found brands cited inside an AI Overview earn ~35% more organic clicks (0.70% vs 0.52% CTR) and 91% more paid clicks than uncited brands on the same queries. The citation is the position worth competing for.

22. AIO citations increasingly diverge from the top-10 links

Ranking and being cited are drifting apart. Analyses tracked by Omnibound show the overlap between AI Overview citations and the traditional organic top 10 falling sharply through 2025–2026. A #1 ranking is no longer a guarantee that you are the source the answer draws from.

The business bottom line

23. Total click-throughs fell ~30% since AIO launched, even as impressions rose 49%

Visibility is up while traffic is down. BrightEdge's 12-month analysis found total impressions rose 49% while total click-throughs fell ~30% since AI Overviews launched. More people see your brand; fewer of them leave Google to reach it — making the on-SERP mention the metric that now matters.

24. Ads now appear alongside ~40% of AIO results, up from ~3%

Google is actively monetizing the surface. Semrush tracked ads appearing alongside AI Overviews rising from ~3% of those SERPs in January 2025 to ~40% by late 2025. AIO is not a temporary experiment Google might walk back — it is becoming a core, revenue-generating part of Search.

The through-line across all twenty-four: the AI Overview now sits above the links, it answers more queries every quarter, and it absorbs the click that used to be yours. The one lever that still works is being cited inside the box — and that is earned with the same signals that win any AEO game: authoritative, well-structured, genuinely useful content that models are happy to quote. The brands treating AI Overviews as their new homepage above the fold are the ones getting named while everyone else watches their rankings hold and their traffic fall.