VercatusEvidence on corroborating brand mentions across sources
Off-site brand mentions correlate with AI visibility most clearly in Google AI Overviews. Across about 75,000 brands, branded web mentions had the strongest Spearman correlation with AI Overview brand visibility (0.664), ahead of branded anchors (0.527), branded search volume (0.392), Domain Rating (0.326) and backlinks (0.218). For the top 50 domains in June 2025 the correlation was 0.65 for AI Overviews but 0.30 for Perplexity and 0.15 for ChatGPT. Google says its AI features can show what is said about products across blogs, videos and forums, but seeking inauthentic mentions is not as helpful as it might seem.
Sources
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- 3Google · 2026Optimizing your website for generative AI features on Google Searchdevelopers.google.com
CGrade C: reputable industry data or observation. A grade describes the provenance of the sources above; it is not a probability that a change will work. The effect basis says how the size of the effect is known: measured by a study, taken from an industry report, only documented without a size, or not quantified.
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