Google’s AI Mode and AI Overviews can produce answers with similar meaning while citing different sources, according to new data from Ahrefs.
The report, published on the Ahrefs blog, analyzed September 2025 U.S. data from Ahrefs’ Brand Radar tool and compared AI Mode and AI Overview responses for the same queries.
The authors looked at 730,000 query pairs for content similarity and 540,000 query pairs for citation and URL analysis.
What The Study Found
Ahrefs reports that AI Mode and AI Overviews cited the same URLs only 13% of the time. When…

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