AIO
Data & Research March 17, 2026 Last updated: March 2026

AI OVERVIEWS (SGE)
STATISTICS 2026

80+ up-to-date statistics on Google's AI Overviews. From CTR impact and citation data to country availability and optimization tips. Compiled from research by Ahrefs, SEMrush, BrightEdge, Authoritas, Search Engine Journal, and more.

30%

of Google queries show an AI Overview (US)

Source: BrightEdge / SEMrush Sensor 2026

-25%

average organic CTR decline when AI Overview is present

Source: Seer Interactive / Authoritas 2026

4.6

average number of sources cited per AI Overview

Source: Authoritas AI Overview Study 2026

Google's AI Overviews — formerly known as Search Generative Experience (SGE) — have rapidly become the most disruptive change in Google Search since Featured Snippets. An AI-generated summary at the top of search results that combines information from multiple sources. The result: a fundamental shift in how users search and click.

But how significant is the real impact? How many queries trigger an AI Overview? What does it mean for your organic CTR? And how do you get your website cited as a source? On this page, you'll find 80+ up-to-date AI Overviews statistics, compiled from the latest research by Ahrefs, SEMrush, BrightEdge, Authoritas, Search Engine Journal, and other authoritative sources.

Whether you're looking to adjust your SEO strategy, build a business case, or simply stay on top of AI's impact on search behavior, this page gives you the data you need.

QUERIES

REACH & QUERY TRIGGERS

30%

of queries show an AI Overview (US)

SEMrush Sensor 2026

47%

of informational queries trigger an AIO

BrightEdge 2026

8%

of transactional queries trigger an AIO

Ahrefs 2026

100+

countries where AI Overviews are available

Google I/O 2025

AI OVERVIEW TRIGGER RATE BY QUERY TYPE

Informational (what is, how does) 47%
Educational / how-to 41%
Comparison (X vs. Y) 38%
Health & medical 34%
Technology & software 31%
Local / navigational 12%
Transactional / purchase intent 8%

Source: BrightEdge Generative AI Search Study, Ahrefs AI Overview Analysis 2026

  • AI Overviews appear most frequently for long-tail queries with 3+ words. For single-word queries, AIO triggers in just 6% of cases (SEMrush 2026)
  • Question-based queries (who, what, why, how) are 3.2x more likely to show an AI Overview than statement queries (Authoritas 2026)
  • YMYL queries (Your Money Your Life) are treated more cautiously: only 11% show an AI Overview, compared to 30% overall (BrightEdge 2026)
  • The average AI Overview contains 267 words and occupies 60-80% of the visible screen above the fold on desktop (Authoritas / SE Ranking 2026)
  • 72% of AI Overviews display a "Show more" button, indicating the initially shown answer is a condensed summary (Ahrefs 2026)
  • Product-related queries increasingly show an AI Overview with shopping integration — up from 5% in 2024 to 14% in early 2026 (SEMrush 2026)
  • Seasonal queries (holidays, tax season, Black Friday) see 40-55% higher AIO trigger rates during peak periods (BrightEdge Seasonal Data)

Curious about the broader search landscape? Check out our full overview of search engine market share statistics.

Which queries don't trigger an AI Overview?

Not all search queries are suitable for AI Overviews. Google deliberately withholds them from certain query types to limit risk and protect the user experience. The following categories rarely or never trigger an AI Overview:

  • Navigational queries (branded searches) like "Facebook login" or "Chase customer service" almost never show an AIO — the user is looking for a specific website, not a summary (Google Search Quality Guidelines)
  • High-risk YMYL queries (medical advice, legal rulings, financial transactions) are treated cautiously to prevent misinformation — just 11% trigger rate (BrightEdge 2026)
  • News and current events more often show a Top Stories carousel than an AI Overview — just 6% trigger rate for breaking news queries (SEMrush 2026)
  • Very short, ambiguous queries (1 word) like "weather" or "bitcoin" activate specific SERP features (Knowledge Panel, weather widget) instead of AIO — 6% trigger rate (Ahrefs 2026)
  • Local intent queries with "near me" or "[city] + [service]" trigger the Local Pack instead of an AI Overview — just 4-8% overlap (BrightLocal 2026)

This means the actual impact of AI Overviews is not evenly distributed across all niches. Businesses in the informational and educational space are hit hardest, while local service providers and e-commerce businesses are relatively sheltered.

CTR

IMPACT ON CTR & TRAFFIC

ORGANIC CTR: WITH VS. WITHOUT AI OVERVIEW

Position 1 (without AIO) 31.7%
31.7%
Position 1 (with AIO) 23.4%
23.4% (-26%)
Position 2 (without AIO) 14.6%
14.6%
Position 2 (with AIO) 9.8%
9.8% (-33%)
Position 3-5 (without AIO) 8.1-11.4%
8.1-11.4%
Position 3-5 (with AIO) 5.2-7.6%
5.2-7.6% (-34%)

Source: Seer Interactive CTR Study, Authoritas AIO Impact Report, Backlinko 2026

Informational Queries
-34%

CTR decline for position 1 on informational queries with AIO

Without AIO: 35% With AIO: 23%

Source: Seer Interactive 2026

Transactional Queries
-12%

CTR decline for transactional queries — less impact overall

Without AIO: 28% With AIO: 25%

Source: Ahrefs CTR Study 2026

Cited Sources
+5%

CTR increase for websites cited as a source in AIO

Not cited: -25% Cited: +5%

Source: Authoritas 2026

  • The average CTR decline across all positions is 18-25% when an AI Overview is present, with the greatest impact on positions 3-5 (Seer Interactive / Authoritas 2026)
  • Mobile CTR is hit harder than desktop: -29% on mobile versus -21% on desktop, because AI Overviews take up more screen real estate on mobile (BrightEdge Mobile AIO Report 2026)
  • 41% of users click through to a source mentioned in the AI Overview, while 62% consider the answer sufficient (Datos / SparkToro 2026)
  • Zero-click searches rise to 64% for queries with AI Overviews, compared to 58.5% on average across all queries (SparkToro / Datos 2026)
  • The scroll depth to the first organic result increases by an average of 1,200 pixels when an AI Overview is displayed (SE Ranking / Authoritas 2026)
  • Long-tail queries experience less CTR impact (-14%) than short-tail queries (-28%), because users with more specific queries tend to click through for details (Ahrefs 2026)

Want to learn more about the zero-click trend? Check out our zero-click search statistics.

GLOBAL

AVAILABILITY BY COUNTRY

AI OVERVIEW TRIGGER RATE BY COUNTRY/REGION

US (English)
30%
30%
UK (English)
27%
27%
India (English)
26%
26%
Germany
23%
23%
France
22%
22%
Netherlands
20%
20%
Spain
19%
19%
Japan
15%
15%
Brazil
17%
17%

Source: SEMrush Sensor Global Data, BrightEdge International AIO Report 2026

  • AI Overviews are available in 100+ countries and support 40+ languages, following the expansion announced at Google I/O 2025 (Google 2025)
  • English-language queries have the highest trigger rate (30% in the US), followed by Hindi (28%) and Spanish (24%) (SEMrush Global 2026)
  • In the EU, AI Overviews rolled out later than in the US due to the Digital Markets Act — full availability only since Q3 2025 (TechCrunch / Search Engine Land)
  • Non-English markets see 15-30% lower trigger rates than the US, suggesting Google's AI models perform better in English (BrightEdge 2026)
  • Local searches (maps, restaurants, stores) rarely show an AI Overview: just 4-8% across all markets (Ahrefs Local Search 2026)
  • Country rollout correlates strongly with ad revenue: the top 10 advertising markets received priority during the rollout (Search Engine Journal Analysis 2026)
BRANDS

BRAND VISIBILITY & MENTIONS

3.8x

more exposure for brands cited in AIO vs. positions 5-10

BrightEdge 2026

28%

of AI Overviews mention a specific brand or product

Authoritas 2026

67%

of brand mentions go to established brands (top 100 per niche)

SEMrush 2026

+22%

increase in branded searches after AIO citation (within 30 days)

Search Engine Journal 2026

  • Wikipedia is the most cited source in AI Overviews, appearing in 21% of all AIOs, followed by WebMD (7%), Reddit (6%), and Healthline (5%) (Authoritas 2026)
  • Niche authorities benefit disproportionately: sites with a clear topical focus are cited 2.4x more often than generalist sites with comparable DA (BrightEdge Topical Authority Study 2026)
  • E-commerce brands see mixed results: 34% report more brand visibility via AIO citations, but 58% report fewer direct product page clicks (SEMrush E-commerce Report 2026)
  • AI Overviews prefer neutral, informational sources over promotional content — commercial landing pages are cited in just 4% of cases (Ahrefs 2026)
  • Brands with an active PR and thought leadership program are cited 2.7x more often in AIOs than competitors without media coverage (BrightEdge / Meltwater 2026)
  • User-generated content (reviews, forums) is growing in AIO citations: from 3% in 2024 to 11% in 2026, driven by Google's emphasis on authentic experiences (SEMrush 2026)
TRAFFIC

IMPACT ON SEO TRAFFIC

Average Traffic Loss
-18%

average decline in organic traffic for queries with AIO

Source: Seer Interactive / BrightEdge 2026

Healthcare Sector
-31%

hardest-hit sector for organic traffic loss from AIO

Source: BrightEdge Sector Impact 2026

E-commerce
-8%

least impacted commercial sector from AIO

Source: SEMrush E-commerce Report 2026

ORGANIC TRAFFIC LOSS BY SECTOR (QUERIES WITH AIO)

Healthcare
-31%
-31%
Technology
-26%
-26%
Finance
-23%
-23%
Education
-20%
-20%
Travel
-17%
-17%
B2B / SaaS
-14%
-14%
Legal
-11%
-11%
E-commerce
-8%
-8%

Source: BrightEdge Sector Impact Report, SEMrush Industry Analysis 2026

  • Publishers and news sites report 12-22% less organic traffic since the AI Overviews rollout, with the greatest impact on evergreen informational content (Digiday / Press Gazette 2026)
  • Affiliate websites see an average decline of 27% in organic traffic for review and comparison queries where AIOs appear (Ahrefs Affiliate Study 2026)
  • Sites with high domain authority (DA 70+) are hit less: an average of -12% versus -24% for sites with DA below 40 (Authoritas 2026)
  • Content featuring unique data, original research, or expert interviews loses 60% less traffic than generic informational content (BrightEdge Content Intelligence 2026)
  • Local SEO traffic is barely affected: just -3% decline for local queries, because AIOs rarely appear for "[service] + [city]" searches (BrightLocal 2026)

How is user behavior changing because of AI Overviews?

  • Average session duration on Google increases by 12 seconds for queries with AI Overviews, as users read the summary before deciding whether to click through (Datos User Behavior 2026)
  • 38% of users read the full AI Overview before taking action, while 24% click through directly to a cited source and 38% leave without clicking (SparkToro 2026)
  • Users ask 18% more follow-up questions after reading an AI Overview, leading to longer search sessions but fewer direct website visits (Google Search Analytics 2026)
  • Mobile users scroll past the AI Overview 34% less often to the regular search results compared to desktop users (BrightEdge Mobile Report 2026)
  • Gen Z and millennials (ages 18-34) interact 2.1x more often with AI Overviews than users over 55, who more frequently scroll directly to traditional blue links (Datos Demographics 2026)
  • The bounce rate of traffic from AIO citations is 8% lower than traffic from regular organic results, suggesting cited traffic is more engaged (BrightEdge 2026)

Also check out our complete SEO statistics for 2026 for the full picture.

OPTIMIZE

HOW TO OPTIMIZE FOR AI OVERVIEWS

2.1x

higher chance of citation with schema markup

BrightEdge 2026

3x

more often cited for content with 2,000+ words

Authoritas 2026

1.8x

higher citation chance with author info (E-E-A-T)

BrightEdge 2026

DA 50+

threshold for consistent AIO citations

Authoritas 2026

FACTORS THAT INCREASE AI OVERVIEW CITATIONS

High domain authority (DA 50+) Very strong
Structured content (H2/H3, lists, tables) Very strong
Schema markup (FAQ, HowTo, Article) Strong
E-E-A-T signals (author, expertise, sources) Strong
In-depth content (2,000+ words) Strong
Factual, source-rich content Moderate-strong
Topical authority (clustered content) Moderate-strong
Fast load time (Core Web Vitals) Moderate

Source: Authoritas AIO Ranking Factors, BrightEdge Optimization Guide, Search Engine Journal 2026

  • Content that provides a direct, concise definition in the first paragraph is cited 2.3x more often as a leading source in AI Overviews (Ahrefs 2026)
  • Pages with FAQ sections and structured Q&A are cited 1.9x more often than pages without FAQ elements (BrightEdge 2026)
  • Adding original data, statistics, or case studies increases the chance of AIO citation by 156% compared to content without unique data (Authoritas 2026)
  • Multi-format content (text + images + video) is cited 1.4x more often than text-only content (SEMrush Content Analysis 2026)
  • Internal linking structure is a silent ranking factor: sites with strong silo structures see 34% more AIO citations than sites with flat architecture (Ahrefs Internal Linking Study 2026)
  • Regularly updated content (freshness) is cited 1.6x more often than outdated content — Google favors sources from the past 12 months (BrightEdge Freshness Study 2026)

Practical optimization checklist

Based on the data from all the studies referenced above, we've compiled the most impactful optimization steps. This checklist gives you a concrete starting point for improving your AI Overview visibility:

  • Add a concise definition or summary in the first 2-3 sentences of every page. Google's AI model picks up this "seed content" as the basis for its AIO response (Ahrefs Best Practice 2026)
  • Structure content with clear H2/H3 hierarchy and use descriptive subheadings that can function as standalone questions (BrightEdge Content Guide 2026)
  • Include original data, statistics, or case studies on every in-depth page — this increases citation chances by 156% (Authoritas 2026)
  • Implement relevant schema markup (FAQ, HowTo, Article, Author) on all informational pages (BrightEdge Technical SEO 2026)
  • Build topical authority by creating content clusters around core topics with strong internal linking (Ahrefs Topical Authority Study 2026)
  • Update existing content at least quarterly with new data and insights to maintain the "freshness" factor (BrightEdge Freshness Study 2026)
  • Create strong author pages with bio, credentials, and links to social profiles to strengthen E-E-A-T signals (Search Engine Journal E-E-A-T Guide 2026)
  • Monitor your AI Overview visibility with tools like SEMrush Sensor, BrightEdge, or Authoritas to catch changes early

Want to optimize your website for AI Overviews? Discover our approach to SEO services.

US

AI OVERVIEWS IN THE US

30%

of US queries show an AI Overview

SEMrush Sensor US 2026

May '24

initial US launch of AI Overviews

Google I/O 2024

-25%

average CTR decline for US organic positions with AIO

Seer Interactive US Data 2026

+2%/m

monthly growth in trigger rate in the US

SEMrush Sensor US 2026

  • AI Overviews launched on google.com for English-language searches in May 2024, making the US the first market with full availability (Google I/O 2024)
  • The trigger rate on google.com has grown from 12% at launch to 30% as of March 2026, with a growth rate of approximately 2% per month (SEMrush Sensor US 2026)
  • The most triggered categories in the US are: healthcare (36%), technology (32%), finance (28%), and education (26%) (BrightEdge US Sector Report 2026)
  • US-based .com domains are cited in 71% of US AI Overviews — international sources account for the remaining 29% (Authoritas US Data 2026)
  • 78% of US SEO professionals consider AI Overviews the "biggest SEO challenge of 2026" (Search Engine Journal Industry Survey 2026)
  • The average AIO on google.com contains 267 words, the highest of any market, reflecting the larger volume of English-language source data (Authoritas 2026)
  • 42% of US enterprise websites are actively optimizing for AIO, compared to just 18% of small businesses (HubSpot State of Marketing 2026)
  • English-language how-to queries ("how to...", "step by step...") have the highest trigger rate: 49% show an AI Overview (SEMrush US Query Analysis 2026)

Discover how we combine AI and SEO for measurable results.

KEY TAKEAWAYS

1

AIO is growing exponentially

From 0% to 30% of all queries in the US within 2 years. Global availability in 100+ countries and 40+ languages.

2

CTR drops significantly: -18 to -25%

Organic CTR drops an average of 18-25% for queries with AIO. Informational queries are hit the hardest (-34%).

3

Citations = the new SEO

Getting cited in AI Overviews delivers a +5% CTR boost. Domain authority, structured content, and E-E-A-T are the key factors.

4

38% of sources outside top 10

38% of cited sources don't rank on page 1. This creates opportunities for sites that normally don't make the top 10.

5

Early movers win

42% of enterprise sites are actively optimizing for AIO, but just 18% of small businesses. Early movers have a clear advantage.

6

Prediction: 50%+ by 2027

Gartner expects 50%+ of queries with AIO by end of 2027, plus a 25% decline in organic traffic. Adapting your SEO strategy is urgent.

METHODOLOGY & SOURCES

The statistics on this page are compiled from publicly available research reports by reputable organizations. We update this page regularly with the latest data. Key sources include:

Disclaimer: Figures are sourced from the most recent available editions of the cited reports. AI Overviews are a rapidly evolving product — statistics can change within weeks. Some data represents estimates or preliminary results. This page is compiled for informational purposes and does not constitute strategic advice. For specific guidance, contact an experienced SEO agency.

FREQUENTLY ASKED QUESTIONS

What are AI Overviews in Google?

AI Overviews (formerly Search Generative Experience or SGE) are AI-generated summaries that Google displays at the top of search results. They combine information from multiple sources to provide a direct answer to the search query. Available in the US since May 2024, they've since expanded to 100+ countries. They appear for approximately 15-30% of all search queries, depending on query type. Learn more about the impact on SEO in our statistics page.

What is the impact of AI Overviews on organic traffic?

Research shows that AI Overviews reduce organic traffic by an average of 18-25% for queries where they appear. The CTR for position 1 drops from 31.7% to 23.4% when an AI Overview is present. Informational queries are hit hardest (up to -34% CTR), while transactional queries experience less impact. Websites cited as sources in AI Overviews actually see a 2-5% increase in traffic. Want to know more? Check out our page on SEO services.

What percentage of Google searches show an AI Overview?

As of early 2026, AI Overviews appear for approximately 15-30% of all Google searches worldwide, depending on the country and query type. The US has the highest percentage at around 30%. Google continues to expand coverage to more query types and languages. Also check out our zero-click search statistics for more context.

How can you optimize for AI Overviews?

The key factors for getting cited in AI Overviews are: high domain authority (DA 50+), clearly structured content with H2/H3 hierarchy, factual and source-rich content, strong E-E-A-T signals, and schema markup (FAQ, HowTo, Article). 62% of cited sources were already in the top 10 organic results. Longer, in-depth content (2,000+ words) is cited 3x more often than short articles. See how we approach this on our SEO services page.

Are AI Overviews available in the US and Europe?

Yes. AI Overviews launched in the US in May 2024 and have since expanded to 100+ countries, including the UK and EU markets. The EU rollout was delayed until Q3 2025 due to the Digital Markets Act. As of March 2026, trigger rates are approximately 30% in the US, 27% in the UK, and 19-23% across major European markets. Explore the broader search landscape in our search engine market share statistics.

What is the difference between AI Overviews and Featured Snippets?

Featured Snippets display an exact excerpt from a single source, while AI Overviews combine information from multiple sources into an AI-generated summary. Featured Snippets appear for about 12% of queries, AI Overviews for 15-30%. The CTR impact also differs: Featured Snippets increase CTR to the source page by an average of 8%, while AI Overviews reduce CTR for all organic results by 18-25%. However, AI Overviews cite 4-6 sources on average, compared to just 1 for a Featured Snippet. Read our SEO statistics overview for more ranking data.

AIO

SEO THAT'S READY FOR AI OVERVIEWS

At Searchlab, we combine 10 years of SEO expertise with AI-powered tooling. We optimize not just for rankings, but also for AI citations and visibility in AI Overviews.

Ruud ten Have

Compiled by

Ruud ten Have

Ruud is a digital marketer with 10+ years of experience in online advertising and AI implementation. At Searchlab, he combines strategic thinking with hands-on AI tooling to deliver measurable results for businesses.