We asked more than sixty founders, PR pros, and operators a question every marketer is now quietly anxious about: when ChatGPT, Claude, Perplexity, or Google AI Overviews answer a marketing question, which sources get cited, and which get ignored?
The loudest finding cuts against instinct. AI engines do not reward the most authoritative source or the most polished writing. They reward the most extractable and verifiable one: a clean, sourced, self-contained answer they can lift in the first sixty words and stand behind. That reshuffles who wins. Plain question-and-answer pages beat buried thought leadership, original data beats opinion, and a niche page with a checkable fact beats a famous brand's homepage.
But it is not unanimous, and the disagreements are the most useful part:
High domain authority still concentrates citations in some categories. One tracker found 12 publishers took 74% of citations.
Community sources, especially Reddit, are rising fast.
In trust-sensitive fields like health, legal, and finance, AI reaches for a narrow shortlist of credentialed and earned sources, while brand content stays nearly invisible no matter how good it is.
The real takeaway is not one rule. The category decides: earned and credentialed sources dominate where trust is scarce, and a brand's own structured, data-rich pages dominate where the buyer just wants a fast, checkable answer.
Every operator quoted is cited and linked in the report. Want in on the next one? We publish research from the people who answer our briefs. See what is open at prapi.dev/research.