Google AI Overviews Now on 50% of US Searches

Google's AI Overviews (AIOs) now appear on approximately 48–50% of all US Google Search queries, an almost eightfold increase from 6.49% in January 2025 [1]. This expansion has restructured organic search traffic and publisher referrals, making AIOs the most encountered AI feature online for 2 billion monthly users globally [1, 2].

Shifting Search Dynamics

The prevalence of AI Overviews has grown significantly, with Google's own disclosure citing "roughly 50% of US queries" [1]. While specific prevalence figures vary across different studies due to methodology, the directional trend shows a 4–9x expansion in 15 months [1, 2]. This growth includes a shift in query types, with informational queries dropping from 91.3% of AIO triggers in January 2025 to 57.1% by October 2025, while commercial queries rose to approximately 19% [2].

The commercial impact on organic click-through rates (CTR) has been significant. A longitudinal study tracking 2.43 billion impressions found that organic CTR on AIO queries initially dropped 65% from 1.76% to 0.61% between June 2024 and September 2025 [1]. While it rebounded to 2.4% by February 2026, a structural gap remains: queries without an AI Overview generate 33,500 clicks per million impressions, compared to 20,743 for cited brands and 9,445 for uncited brands on AIO queries [1]. A Pew Research Center study in July 2025 indicated users clicked a traditional result only 8% of the time when an AIO was present, versus 15% without one, a 47% relative decline [1]. This study also noted a 26% session abandonment rate, suggesting queries are being answered directly by Google, reducing traffic to external sites [1].

Industry-Specific Impact and Citation Trends

AI Overview coverage varies by industry, with informational and "Your Money, Your Life" (YMYL) sectors experiencing high saturation. Healthcare queries trigger AIOs 88% of the time, Education 83%, and B2B Technology 82% [1]. Education saw a 361% increase in AIO coverage over 12 months, rising from 18% to 83% [1]. In contrast, e-commerce queries saw a deliberate reduction in AIO coverage, falling from 29% to approximately 4%, a move that preserves Shopping and paid search revenue on transactional queries [1].

Citation patterns within AI Overviews have also changed. Only 17% of AIO citations now come from pages ranking in the organic top 10, a decrease from 76% in mid-2024 [1]. YouTube accounts for 23.3% of all AIO citations, Wikipedia 18.4%, and Reddit 21% [1]. Google reported that AI Overviews drive a 10% increase in search usage for query types where they appear, and total search impressions increased 49% since AIOs launched, even as click-throughs declined by approximately 30% [1]. Ads alongside AI Overviews expanded from about 3% of search results pages in January 2025 to approximately 40% by November 2025 [1]. Publishers globally lost an estimated 33% of Google search referral traffic in the year leading up to November 2025 [1].

What to watch

• Continued AIO expansion: Monitor the growth of AI Overviews into commercial and navigational query categories, which previously had minimal AIO coverage [1].
• Industry-specific shifts: Observe how AIO prevalence continues to evolve across different sectors, particularly for B2B technology where 82% of queries now trigger AIOs [1].
• Citation source diversification: Track changes in which platforms and types of content are cited within AI Overviews, especially given the decline in citations from top-10 organic results [1].

The structural changes introduced by AI Overviews mean that the question for many businesses is no longer whether their content will be summarized by AI, but whether they are cited within those summaries or remain invisible [1].