Google is currently testing a feature that displays AI-generated summaries of web pages directly within the source cards of AI Overviews. These summaries appear to the right or below the main AI response, acting as a new type of snippet that dictates whether a user clicks through to the site.
Data from Comscore indicates that the AI Overviews block appeared in 39.4% of desktop searches in the US in June, and 25.8% in July 2025. While the feature is currently in testing and not present in every search, its frequency is increasing. Research by Aral, Li, and Zuo suggests that the reach of AI Overviews expanded from 7 countries in 2024 to 229 in 2025.
According to data cited by Search Engine Land, pages that address both a primary query and its subtopics are 161% more likely to be included in AI Overview citations. Furthermore, Seer Interactive reports that a citation in an AI Overview generates 120% more organic clicks per impression compared to being present in the block without a citation.
Despite the potential for increased visibility, queries featuring AI Overviews generally receive 38% fewer clicks per impression than those without the block. The new AI-generated summaries introduce an additional filter, making it essential for site owners to ensure the first screen of their page clearly communicates the value of clicking through.
