Google AI Overviews Reshape Search Behavior, Study Shows

According to a comprehensive study by the Pew Research Center, Google's AI Overview feature is fundamentally altering how users interact with search results, leading to a significant decline in traffic to external websites. The research suggests that when Google provides AI-generated summaries at the top of search results, users are far less likely to click through to other sources.

The Impact on User Behavior

The study analyzed 900 American adults conducting nearly 69,000 Google searches in March 2025. Key findings include:

• Only 8% of users clicked on standard search results when AI Overviews were present, compared to 15% without them
• Users clicked on source links within AI Overviews just 1% of the time
• 26% of searches ended on Google when AI Overviews appeared versus 16% for standard results

For website owners hoping to attract visitors, Google's AI-generated answers have made it more difficult for them to gain clicks through search. | Image: Pew Research Center

The frequency of AI Overviews varies significantly by query type:

• 8% appearance rate for 1-2 word queries
• 53% appearance rate for queries of 10+ words
• 60% chance for questions beginning with "who," "what," or "why"

Winners and Losers in the New Search Landscape

The study identified clear patterns in which sources benefit from AI Overviews:

• 88% of summaries link to at least three sources
• Wikipedia and .gov domains appear more frequently in AI Overviews than traditional results
• YouTube appears less in summaries but more in standard search results
• Reddit and news sites maintain about 5% representation in both formats

"Wikipedia and government websites are the biggest 'winners' when Google's AI Overview determines clicks," the report notes.

The findings pose particular challenges for news publishers, who have long had a contentious relationship with Google over content usage. The rise of AI summaries may intensify these conflicts while raising regulatory questions about whether Google is evolving into a media company.

Wikipedia and government websites benefit most from AI Overview links. | Image: Pew Research Center

Supporting Evidence from Other Studies

The Pew findings align with independent research showing even more dramatic impacts:

• Ahrefs analysis found a 34.5% drop in click-through rates for top search results with AI Overviews
• Some UX studies show external clicks dropping by two-thirds on desktops and nearly half on mobile devices when summaries appear
• Many users report finding answers sufficient within the overview itself

The trend suggests a potential shift from an "open web" model toward a more centralized, Google-controlled interface. As the company plans global rollout of AI Overviews and tests broader "AI Mode" redesigns, competitors like OpenAI and Perplexity are developing similar systems.

Key Points:

1. Google's AI Overviews reduce external website clicks by up to two-thirds
2. Wikipedia and government sites benefit most from summary links
3. News publishers face significant traffic declines
4. Longer queries (10+ words) trigger summaries 53% of the time
5. Regulatory concerns may arise as Google becomes content gatekeeper