Checked 22 September 2026 · 11 min read
AI Search Statistics 2026: Usage, Citations, Clicks, and Referrals
How this page is compiled
AI search numbers are unusually easy to misquote. Platform user counts mix passive exposure with deliberate use, click studies measure different query sets, and many widely repeated figures are estimates from secondary sites. This page only uses data from the organisation that collected it: Google's own disclosures, Pew's panel research, Similarweb's clickstream, and studies from Ahrefs, Semrush, Seer Interactive, and Adobe on their own datasets. Each row states what was measured and when. Superseded figures are replaced rather than stacked.
Estimates of Perplexity query volume and similar figures without a current company disclosure are left out. If a number you expected is missing, that is usually why.
The ten numbers that matter most
- 2.5 billion+ monthly users see AI Overviews; AI Mode passed 1 billion (Google I/O 2026).
- 49% of US adults have used an AI chatbot, up from 33% in 2024; about a quarter use one daily (Pew Research).
- 76% to 53%: ChatGPT's share of generative AI web traffic over a year, as Gemini grew to about 27% and Claude to about 9% (Similarweb).
- 18% of Google searches showed an AI summary in Pew's behavioral sample; 60% of question-format searches did.
- 8% vs 15% click rate on traditional results with and without an AI summary (Pew Research).
- 58% lower position-one CTR when an AI Overview is present (Ahrefs).
- 2.07% vs 0.94% organic CTR when cited inside the AI Overview versus not cited (Seer Interactive).
- 71% growth in AI Overviews on commercial keywords in six months (Semrush).
- 6.8% of US ChatGPT prompts now produce a citation, up from 1.6% a year earlier (Similarweb).
- 42% better conversion from AI-sourced traffic on US retail sites in March 2026 (Adobe Analytics).
Usage and adoption
Two different things get called AI search usage. Google's billions count everyone who sees an AI answer inside a normal search. Chatbot adoption counts people who open an assistant on purpose. Both are growing, but the second is where referral traffic and citations come from, and it is far smaller. Within that group, the share is shifting away from ChatGPT even as its absolute usage holds.
| Statistic | What it measures | Source |
|---|---|---|
| 2.5 billion+ | Monthly active users of Google AI Overviews, as stated at I/O 2026. This counts people who see AI Overviews in search, not people who chose an AI product. | Google I/O 2026 keynoteMay 2026 |
| 1 billion+ | Monthly active users of Google AI Mode within its first year. | Google I/O 2026 keynoteMay 2026 |
| 950 million | Monthly active users of the Gemini app at the Q2 2026 earnings call, with daily active users tripling in a year. The figure was 400 million in May 2025 and 900 million at I/O 2026. | Alphabet Q2 2026 earnings remarksJuly 2026 |
| 9.5 billion | Average monthly web visits to generative AI platforms worldwide, June 2025 to May 2026, up 70% year over year. Unique visitors grew 57% to 655 million; app downloads grew 58% to 4.4 billion. | Similarweb, AI search statsJuly 2026 |
| 76% to 53% | ChatGPT's share of worldwide generative AI web traffic, June 2025 to May 2026. Its absolute visits stayed roughly flat while the category grew. | Similarweb, AI search statsJuly 2026 |
| Under 9% to 27–28% | Gemini's share of generative AI web traffic over the same period, the largest gain by share. | Similarweb, AI search statsJuly 2026 |
| 2% to close to 9% | Claude's share of generative AI web traffic over the same period; its app monthly active users grew about 1,318%. | Similarweb, AI search statsJuly 2026 |
| 49% | US adults who have used an AI chatbot, up from 33% in 2024. About a quarter use one daily, including 12% several times a day. Survey of 5,119 adults, February 2026. | Pew Research Center, Americans and AI 2026June 2026 |
| 44% / 24% / 17% | Share of US adults who have used ChatGPT, Gemini, and Copilot. Meta AI 14%, Grok 8%, Claude 6%, Character.ai 3%. | Pew Research Center, Americans and AI 2026June 2026 |
| 42% | Share of chatbot users whose main use is looking up information, ahead of workplace tasks at 38% of employed users. | Pew Research Center, Americans and AI 2026June 2026 |
| 60% | US adults who say they read the AI summaries at the top of search results. | Pew Research Center, Americans and AI 2026June 2026 |
AI Overview coverage by query type
Coverage estimates range from 18% of all searches to more than a third of informational keywords, depending on whether the sample is real user behaviour or a tracked keyword set. The direction is consistent: AI Overviews began on questions and comparisons and have moved into commercial queries, where they increasingly share the page with ads.
| Statistic | What it measures | Source |
|---|---|---|
| 18% | Share of Google searches that showed an AI summary in March 2025 across 68,879 real searches by 900 US adults. 58% of participants saw at least one that month. | Pew Research CenterJuly 2025 |
| 60% / 53% | Share of question-format searches, and of searches with ten or more words, that produced an AI summary. | Pew Research CenterJuly 2025 |
| 36% / 8% / 5% | AI Overview prevalence on informational, commercial, and transactional queries across 5.47 million queries tracked for 53 brands. | Seer InteractiveApril 2026 |
| 95.4% / 85.9% / 76.9% | AI Overview trigger rate on comparison queries, question-format queries, and informational near-me queries. | Seer InteractiveApril 2026 |
| 71% | Growth in AI Overview triggers on commercial-intent keywords between November 2025 and April 2026, across 600,000+ US desktop keywords. Finance keywords grew 231%, computers and electronics 108%. Transactional triggers fell 5%. | SemrushJuly 2026 |
| 2x | How much more often AI Overviews and Google Ads appear on the same result page than a year earlier. In finance, keywords with an AI Overview averaged a $4.84 CPC versus $2.14 without. | SemrushJuly 2026 |
For the mechanics behind these figures, see how Google AI Overviews work.
Click impact
Three methods agree on direction and differ on size. Seer's dataset is the only one large enough to show a trend within 2026, and it shows a partial recovery from the December 2025 low, alongside a clear advantage for pages cited inside the AI Overview.
| Statistic | What it measures | Source |
|---|---|---|
| 8% vs 15% | Share of visits where users clicked a traditional result when an AI summary was present versus absent. | Pew Research CenterJuly 2025 |
| 1% | Share of visits with an AI summary where the user clicked a link inside the summary. | Pew Research CenterJuly 2025 |
| 26% vs 16% | Share of result pages that ended the browsing session, with versus without an AI summary. | Pew Research CenterJuly 2025 |
| 58% lower | Position-one CTR on keywords with an AI Overview versus without, across 300,000 keywords, December 2023 versus December 2025. The April 2025 version of the study found 34.5%. | AhrefsFebruary 2026 |
| 1.31% to 2.36% | Organic CTR on queries with an AI Overview, from the December 2025 low to February 2026, across 2.43 billion organic impressions. Queries without one sat at 3.82% in February 2026. | Seer InteractiveApril 2026 |
| 2.07% vs 0.94% | Average 2025 organic CTR on informational queries when the brand was cited in the AI Overview versus not cited, about 120% more clicks per impression. No-AI-Overview queries averaged 3.35%. | Seer InteractiveApril 2026 |
| +135% vs −48% | Change in CTR on transactional queries from January to December 2025 for brands cited in the AI Overview versus not cited. | Seer InteractiveApril 2026 |
| 68.01% | US Google searches that ended without a click in January to April 2026, up from 60.45% in 2024. | SparkToro, Similarweb clickstream dataJune 2026 |
The wider zero-click picture is in SEO statistics 2026 and what is zero-click search.
Citations and sources
Citation behaviour differs sharply by product. Google's summaries almost always cite several sources; ChatGPT cites in a minority of prompts but the share is rising fast and varies by industry. Visibility is also concentrated: a small number of brands hold most of it in each category, which is the pattern link-based authority produced in classic search.
| Statistic | What it measures | Source |
|---|---|---|
| 88% | Share of Google AI summaries citing three or more sources. Median summary length was 67 words. | Pew Research CenterJuly 2025 |
| 15% | Combined share of AI summary citations going to Wikipedia, YouTube, and Reddit. Government sites made up 6% of summary sources versus 2% of standard results. | Pew Research CenterJuly 2025 |
| 15 vs 3 | Average number of sources cited per response by ChatGPT versus Gemini, across 126 million US prompts from January to April 2026. | Semrush AI Visibility Index2026 |
| 36 | Number of brands worldwide that held top-100 visibility across ChatGPT, Gemini, AI Mode, and AI Overviews for the whole study period. | Semrush AI Visibility Index2026 |
| 82.9% | Share of AI visibility held by the top three brands in news and media. Consumer electronics 76.9%, finance 41.4%. | Semrush AI Visibility Index2026 |
| 1.6% to 6.8% | Share of US ChatGPT prompts whose response included a citation, June 2025 to May 2026. Travel and hospitality about 23%, automotive about 20%, professional services under 4%. | Similarweb, AI search statsJuly 2026 |
| 26–29% to 62–63% | Share of ChatGPT referral traffic landing on homepages before and after a May 2026 update, a level that has held since. | Similarweb, AI search statsJuly 2026 |
| About 26% | Share of ChatGPT responses that now contain an advertisement, with about a third of ad impressions in first responses. | Similarweb, AI search statsJuly 2026 |
Referrals and conversion
Volume is small and growth rates are large because the base was near zero. The consistent finding is that visitors who arrive from an assistant convert at a higher rate, because the assistant has already done the comparison work. These are first-party datasets from specific companies and sectors, so the multiples describe their audiences.
| Statistic | What it measures | Source |
|---|---|---|
| 0.5% of visits, 12.1% of signups | AI search share of Ahrefs' traffic versus signups over 30 days, about 23 times the conversion rate of organic search visitors. ChatGPT sent most of it. | Ahrefs, AI search conversionsJune 2025 |
| 393% | Year-over-year growth in AI-sourced traffic to US retail sites in the first quarter of 2026; 269% in March alone. | Adobe AnalyticsApril 2026 |
| 42% better | Conversion rate of AI-sourced traffic versus non-AI traffic on US retail sites in March 2026. In March 2025 it converted 38% worse. AI visitors also spent 48% longer and viewed 13% more pages per visit. | Adobe AnalyticsApril 2026 |
| 1,324% / 2,215% | Growth in AI traffic to US retail and travel sites respectively, October 2024 to May 2026. | Semrush AI Visibility Index2026 |
| 81% vs 36% | Share of organisations reporting increased traffic or leads when SEO and AI visibility strategies are integrated versus managed separately. | Semrush AI Visibility Index2026 |
| 45% / 9% | Marketing leaders who cannot accurately measure AI brand visibility, and those with tools covering all relevant metrics. | Semrush AI Visibility Index2026 |
Measurement
| Statistic | What it measures | Source |
|---|---|---|
| 3 June 2026 | Search Console gained a Search Generative AI performance report covering AI Overviews and AI Mode, with impressions, pages, countries, devices, and dates. Clicks, CTR, and query data are not included. | Google Search CentralJune 2026 |
| One impression | How the report counts a URL appearing anywhere in an AI Overview or AI Mode response, regardless of position within it. | Search Console Help, generative AI performance report2026 |
How to combine the Search Console report with prompt samples and referral data is covered in AI SEO metrics and AI feature visibility tracking.
How to use these numbers
- • Do not add Google's AI Overview users to chatbot users. They overlap almost entirely and measure different behaviour.
- • When a study reports a CTR drop, check whether it compares the same keywords over time or different keywords at one time. Both designs appear above.
- • Treat conversion multiples as evidence that AI referrals deserve their own channel in reporting, not as a forecast for your site.
- • Citation rates by industry vary by a factor of five or more. Look for the sector figure before setting a target.
Sources
- Google I/O 2026 keynote (May 2026)
- Alphabet Q2 2026 earnings remarks (July 2026)
- Pew Research Center, Americans and AI 2026 (June 2026)
- Pew Research Center (July 2025)
- Similarweb, AI search stats (July 2026)
- SparkToro, Similarweb clickstream data (June 2026)
- Ahrefs (February 2026)
- Seer Interactive (April 2026)
- Semrush (July 2026)
- Semrush AI Visibility Index (2026)
- Ahrefs, AI search conversions (June 2025)
- Adobe Analytics (April 2026)
- Google Search Central (June 2026)
- Search Console Help, generative AI performance report (2026)
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