In the first four months of 2026, 68.01% of US Google searches ended without a single click, up from 60.45% in 2024 and 49% back in 2019 (SparkToro, 2026 Zero-Click Study, built on Similarweb data). The behavior driving that shift is now mainstream: 49% of US adults use AI chatbots and 60% read AI-generated summaries in their search results (Pew Research Center, June 2026). Google’s AI Overviews reached 2 billion monthly users across more than 200 countries (Google, Q2 2026), while ChatGPT crossed 900 million weekly active users (OpenAI, February 2026). Where a summary appears, Ahrefs measured a 58% collapse in the click-through rate for the top organic result. This analysis consolidates data from Pew Research Center, SparkToro, Similarweb, Ahrefs, Adobe Analytics, and 10 other primary sources to map how AI search is rewiring the path from query to answer.
TL;DR
- 68.01% of US Google searches ended without a click in Q1 2026, up from 60.45% in 2024 (SparkToro, 2026 Zero-Click Study).
- 49% of US adults now use AI chatbots, up from 33% in 2024 and 18% in 2023 (Pew Research Center, Americans and AI 2026).
- 60% of US adults read AI-generated summaries in their search results (Pew Research Center, Americans and AI 2026).
- AI Overviews reduce the top organic position’s click-through rate by 58% (Ahrefs, AI Overviews Study 2025).
- With an AI summary present, only 8% of users click a traditional result, versus 15% without one (Pew Research Center, July 2025).
- ChatGPT reached 900 million weekly active users in February 2026 and 1 billion app monthly users by June 2026 (OpenAI; Sensor Tower via Reuters).
- Google AI Overviews serves 2 billion monthly users across 200+ countries and 40 languages (Google, Q2 2026 earnings).
- ChatGPT held roughly 65% of gen-AI website traffic in December 2025, down from 86.7% a year earlier; Gemini rose to about 20% (Similarweb).
- News-site traffic fell 26% in the 12 months after AI Overviews launched (Similarweb).
- Publishers expect search referrals to drop 43% within three years (Reuters Institute, 2026).
- Retail traffic from generative AI tools grew 693% year over year in the 2025 holiday season (Adobe Analytics).
- Gartner predicted in 2024 that traditional search engine volume would fall 25% by 2026 (Gartner).
1. Who Uses AI Search
Adoption is no longer early-stage. In two years the share of US adults using AI chatbots roughly tripled, and the single most common reason people open one is to look something up. 49% of US adults now use AI chatbots, and 42% of them do so to search for information, the top use case in Pew’s data. The habit is intense at the top: 24% of US adults use chatbots daily, including 4% who describe it as almost constant. Age is the sharpest divide, with under-50s more than twice as likely as older adults to use ChatGPT, meaning the query behavior of the next decade is already skewing away from the ten-blue-links model. See the broader behavioral picture in our AI chatbot statistics for 2026.
| Metric | Value | Source |
|---|---|---|
| US adults using AI chatbots (2026) | 49% (up from 33% in 2024, 18% in 2023) | Pew Research Center, Americans and AI 2026 |
| US adults reading AI summaries in search | 60% | Pew Research Center, Americans and AI 2026 |
| Top chatbot use case: searching for information | 42% | Pew Research Center, Americans and AI 2026 |
| US adults using chatbots daily | 24% (12% several times a day) | Pew Research Center, Americans and AI 2026 |
| ChatGPT use, under-50 vs 50-plus | 57% vs 28% | Pew Research Center, Americans and AI 2026 |
| US adults using chatbots for news | 13% | Pew Research Center, Americans and AI 2026 |
Survey base: 5,119 US adults, February 17-23, 2026, American Trends Panel.
2. The Zero-Click Reality
The click is becoming the exception, not the rule. Two independent panels converge on the same story: most Google searches now resolve on the results page, and when an AI answer is present, the collapse is steeper still. Ahrefs found AI Overviews cut the top organic position’s click-through rate by 58%, with CTR for AI Overview keywords falling from 0.073 to 0.016 between December 2023 and December 2025, a 78% decline. Pew’s browsing-panel data shows the mechanism at the user level: people click a real result in just 8% of searches that carry an AI summary, and they click a link inside the summary only 1% of the time. The interpretive point is that ranking position no longer predicts traffic the way it did.
| Metric | Value | Source |
|---|---|---|
| US Google searches ending without a click (Q1 2026) | 68.01% (vs 60.45% in 2024, 49% in 2019) | SparkToro, 2026 Zero-Click Study |
| Position-1 CTR reduction from AI Overviews | 58% | Ahrefs, AI Overviews Study (Dec 2025) |
| Position-1 CTR, AI Overview keywords | 0.073 to 0.016 (-78%, 2023 to 2025) | Ahrefs, AI Overviews Study 2025 |
| Clicks on a traditional result, AI summary present | 8% (vs 15% without) | Pew Research Center, July 2025 |
| Clicks on a link inside the AI summary | 1% | Pew Research Center, July 2025 |
| Session abandonment after AI-summary page | 26% (vs 16% without) | Pew Research Center, July 2025 |
| Google zero-click rate, year-over-year rise | 56% to 69% | Similarweb, Zero-Click Report 2025 |
Ahrefs analyzed 300,000 keywords (150,000 with AI Overviews) using aggregated Search Console data; corroborating CTR drops came from Seer Interactive (49% to 65%) and Authoritas (47.5%).
3. AI Search Platforms by Scale
The distribution layer for AI answers is now measured in billions. Each major surface reached scale by a different route: ChatGPT as a destination app, AI Overviews as a default injected into existing Google traffic, and Copilot through enterprise seats. ChatGPT’s app crossed 1 billion monthly active users in June 2026, the fastest any app has reached that mark (Sensor Tower via Reuters), after hitting 900 million weekly active users in February. The scale gap between a standalone chatbot and a feature bolted onto Google Search is the key context: AI Overviews’ 2 billion monthly users reflect Google’s installed base, not net-new adoption. Read alongside our generative AI statistics for 2026 for the model-adoption backdrop.
| Metric | Value | Source |
|---|---|---|
| ChatGPT weekly active users | 900 million (Feb 2026) | OpenAI, via Reuters |
| ChatGPT weekly active users (Oct 2025) | 800 million | Sam Altman, via TechCrunch |
| ChatGPT app monthly active users | 1 billion (June 2026, fastest ever) | Sensor Tower, via Reuters |
| Google AI Overviews monthly users | 2 billion, 200+ countries, 40 languages | Google, Q2 2026 earnings (via Digiday) |
| Google AI Mode users (Dec 2025) | 75 million | Nick Fox, Google VP Search |
| Microsoft 365 Copilot paid seats | 20 million (Q3 FY2026) | Microsoft, Q3 FY2026 earnings (April 2026) |
| Perplexity queries, May 2025 (most recent disclosed) | 780 million/month, +20% MoM | Aravind Srinivas, Perplexity CEO |
Perplexity’s per-query figures are the most recent the company has disclosed publicly (Srinivas, 2025); flag as a 2025 data point.
4. Market Share Among AI Answer Engines
The AI answer market is consolidating around four engines while ChatGPT’s early near-monopoly erodes. ChatGPT held roughly 65% of generative-AI website traffic in December 2025, down from 86.7% a year earlier, as Gemini climbed from 5.7% to about 20% on the back of native Android and Search integration (Similarweb). For anyone tracking visibility, the more actionable numbers are the citation rates: engines differ sharply in how often they link out and to whom, which is why appearing in one does not guarantee appearing in another. This fragmentation mirrors the AI licensing scramble covered in our Reddit statistics for 2026, where user-generated content became a bidding war among answer engines.
| Metric | Value | Source |
|---|---|---|
| ChatGPT share of gen-AI web traffic (Dec 2025) | ~65% (down from 86.7%) | Similarweb, Gen AI Stats 2026 |
| Gemini share of gen-AI web traffic (Dec 2025) | ~20% (up from 5.7%) | Similarweb, Gen AI Stats 2026 |
| ChatGPT web-visit growth, Sep 2024 to Mar 2026 | +84% | Similarweb, Gen AI Stats 2026 |
| Gemini / Claude web-visit growth, same period | ~9x / ~770% | Similarweb, Gen AI Stats 2026 |
| Four engines’ share of measurable AI referrals | ~99% (ChatGPT, Gemini, Claude, Perplexity) | Similarweb, 2026 |
| Response citation rate: Perplexity / Google AIO / ChatGPT | 97% / 34% / 16% | Profound, 2026 |
| ChatGPT answers including citations, Jan to Aug 2025 | 0.6% to 2.8% | Ahrefs, 2025 |
Citation-rate divergence explains why visibility on one engine rarely transfers to another (Profound, 2026).
5. The Publisher Traffic Reckoning
For content sites, AI search is a demand shock. The through-line across trackers is a double-digit decline in organic referrals that publishers themselves now treat as structural rather than cyclical. The Reuters Institute’s 2026 survey of 280 media leaders across 51 countries found respondents expect search referrals to fall 43% within three years, with one in five bracing for losses above 75%. That expectation is grounded in measured losses: Similarweb clocked a 26% drop in news-site traffic in the year after AI Overviews launched, and Chartbeat recorded a 33% global decline in organic Google traffic from November 2024 to November 2025. The individual-title numbers show the same curve at scale.
| Metric | Value | Source |
|---|---|---|
| News-site traffic decline, 12 months post-AI Overviews | -26% | Similarweb, 2025 |
| Publisher expectation: search referral drop within 3 years | -43% (1 in 5 expect >75%) | Reuters Institute, 2026 report |
| Organic Google traffic decline, Nov 2024 to Nov 2025 | -33% global, -38% US | Chartbeat, via Reuters Institute / Axios |
| Business Insider organic search, Apr 2022 to Apr 2025 | -55% | The Wall Street Journal, 2025 (Similarweb data) |
| New York Times search share of traffic | 44% (2022) to 37% (2025) | The Wall Street Journal, 2025 (Similarweb data) |
| AI-assistant referral links as share of site traffic | Less than 1% | Reuters Institute / 9to5Google, 2026 |
The gap between publisher exposure to search and the sub-1% of traffic AI assistants currently return defines the “Google Zero” scenario publishers are planning for.
6. AI Referral Traffic Quality and Commerce
The counterweight to the traffic story is quality: the visitors AI does send convert unusually well. Adobe Analytics found that shoppers arriving from generative AI tools converted 31% more than other traffic during the 2025 holiday season, with revenue per visit up 254% year over year. The pattern holds across engagement metrics, with AI-referred visitors 33% less likely to bounce immediately, consistent with arriving after a considered, intent-rich conversation rather than a reflexive click. Volume is compounding fast off a small base, which is why marketers are shifting budget toward answer-engine visibility even as raw referral counts stay modest.
| Metric | Value | Source |
|---|---|---|
| Retail traffic from generative AI, YoY (2025 holiday) | +693.4% | Adobe Analytics, Generative AI Traffic Report |
| Travel / financial-services AI traffic, YoY | +539% / +266% | Adobe Analytics |
| Tech-software / media AI traffic, YoY | +120% / +92% | Adobe Analytics |
| AI-referred conversion vs other sources | +31% | Adobe Analytics |
| AI-referred revenue per visit, YoY | +254% | Adobe Analytics |
| AI-referred bounce likelihood vs other visitors | -33% | Adobe Analytics |
| AI shoppers who click the links they receive | 55%+ (64% satisfied with them) | Adobe Analytics |
Adobe’s figures cover US retail, travel, financial, tech, and media sites; conversion quality outpaced volume across every vertical measured.
7. Market Size and Forecasts
Forecasts diverge widely because analysts define “AI search” differently, so treat any single figure as a scenario, not a fact. The consensus is directional rather than precise: strong double-digit growth, with traditional search losing share to conversational answers. Gartner’s 2024 prediction that traditional search engine volume would drop 25% by 2026 anchored the debate, and the 2026 zero-click and referral data now sit within range of it. The market-sizing estimates below span a 3x spread, which itself is the finding: no one yet agrees on the denominator.
| Metric | Value | Source |
|---|---|---|
| Predicted drop in traditional search volume by 2026 | -25% | Gartner, 2024 prediction |
| AI search engine market, 2025 | 18.84 billion dollars (to 87.63bn by 2035, 16.69% CAGR) | SNS Insider, 2025 |
| AI search engine market, 2026 to 2035 | 20.75bn to 182.17bn dollars (27.3% CAGR) | Precedence Research, 2026 |
| AI search engine market, 2026 | 49.83 billion dollars (14.2% CAGR to 2033) | Coherent Market Insights, 2026 |
| Generative AI market, 2025 to 2033 | 22.2bn to 324.7bn dollars (40.8% CAGR) | Grand View Research, 2026 |
The 3x spread across market-size estimates reflects scope differences (search-only vs full gen-AI), not a data error; cross-reference before quoting any single figure.
Summary: AI Search by the Numbers
| Metric | Value | Source |
|---|---|---|
| US Google searches ending without a click (Q1 2026) | 68.01% | SparkToro, 2026 Zero-Click Study |
| US adults using AI chatbots | 49% | Pew Research Center, Americans and AI 2026 |
| US adults reading AI summaries in search | 60% | Pew Research Center, Americans and AI 2026 |
| Google AI Mode users (Dec 2025) | 75 million | Nick Fox, Google VP Search |
| Position-1 CTR reduction from AI Overviews | 58% | Ahrefs, AI Overviews Study 2025 |
| Clicks on a result when AI summary present | 8% (vs 15%) | Pew Research Center, July 2025 |
| ChatGPT weekly active users (Feb 2026) | 900 million | OpenAI |
| ChatGPT app monthly active users (June 2026) | 1 billion | Sensor Tower, via Reuters |
| Google AI Overviews monthly users | 2 billion | Google, Q2 2026 earnings |
| Microsoft 365 Copilot paid seats | 20 million | Microsoft, Q3 FY2026 earnings |
| ChatGPT share of gen-AI web traffic (Dec 2025) | ~65% (from 86.7%) | Similarweb, Gen AI Stats 2026 |
| Gemini share of gen-AI web traffic (Dec 2025) | ~20% (from 5.7%) | Similarweb, Gen AI Stats 2026 |
| Perplexity queries (May 2025, most recent disclosed) | 780 million/month | Perplexity (Srinivas) |
| Publisher-expected search referral drop (3 yrs) | -43% | Reuters Institute, 2026 |
| Organic Google traffic decline (Nov 2024-Nov 2025) | -33% global | Chartbeat, 2026 |
| Retail AI referral traffic, YoY (2025 holiday) | +693.4% | Adobe Analytics |
| AI-referred conversion vs other sources | +31% | Adobe Analytics |
| Predicted traditional-search volume drop by 2026 | -25% | Gartner, 2024 |
| AI search engine market (2025, SNS Insider) | 18.84 billion dollars | SNS Insider, 2025 |
| Generative AI market by 2033 | 324.7 billion dollars | Grand View Research, 2026 |
Methodology and Sources
Data was gathered by aggregating primary reports, survey disclosures, company earnings statements, and named clickstream trackers published between 2024 and July 2026, prioritizing 2025-2026 sources and cross-referencing user and market figures across at least two panels where possible.
Sources cited:
- Pew Research Center, Americans and AI 2026 (June 2026; 5,119 US adults)
- Pew Research Center, Google Users and AI Summaries (July 2025; 900-adult browsing panel, 68,879 searches)
- SparkToro, 2026 Zero-Click Study (2026; Similarweb clickstream, US)
- Ahrefs, AI Overviews Reduce Clicks Study (December 2025; 300,000 keywords)
- Similarweb, Gen AI Stats 2026 and Zero-Click Report 2025
- Adobe Analytics, Generative AI Referral Traffic Report (2025-2026 holiday and quarterly insights)
- Reuters Institute for the Study of Journalism, Journalism, Media and Technology Trends 2026 (280 leaders, 51 countries)
- Gartner, Search Engine Volume Prediction (2024)
- OpenAI and Sam Altman disclosures (via TechCrunch) and Sensor Tower via Reuters
- Google Q2 2026 earnings and Nick Fox disclosures (via Digiday); Microsoft Q3 FY2026 earnings
- Perplexity (Aravind Srinivas, 2025); Chartbeat (via Axios); Profound (2026)
- Market sizing: SNS Insider (2025), Precedence Research (2026), Coherent Market Insights (2026), Grand View Research (2026)
Data watch: Pew Research Center runs its Americans and AI series annually, so the next update is expected in 2027; SparkToro and Similarweb refresh zero-click and gen-AI traffic quarterly; Ahrefs updates its AI Overviews CTR study roughly every two quarters; Adobe Analytics publishes quarterly AI traffic reports; and the Reuters Institute releases its trends and predictions report each January. Watch for new editions from all of these within the next two quarters.
Last updated: July 9, 2026. We review and update this page quarterly as new data is published.
For the adjacent search-behavior picture, see our voice search statistics for 2026, which tracks how spoken queries and voice assistants intersect with the same shift toward answer-first results.