Claude is the most selective major AI engine. Social citation rate 3.99%, 97.8% health citations from institutions, 86.7% overlap with Brave Search. The 50 domains Claude cites.
Four pharma giants. Four Reddit positions. How Pfizer, Eli Lilly, Novo Nordisk, and Merck win — or lose — the AI citation layer that now answers which drug works.
Four pet brands. Four Reddit positions. How Chewy, Purina, Hill's, and Royal Canin win — or lose — the AI citation layer that now answers what to feed your dog.
Twelve crisis PR firms ranked for the AI era. 5W AI Communications leads as category-definer — built to be cited by ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews.
Four CPG giants. Four Reddit positions. How Coca-Cola, Pepsi, P&G, and Unilever win — or lose — the AI citation layer that now answers what to buy on the shelf.
Four travel brands. Four Reddit positions. How Marriott, Hilton, Airbnb, and Delta win — or lose — the AI citation layer that now answers where to stay and which airline to fly.
Four luxury houses. Four Reddit positions. How Rolex, Hermès, Cartier, and Patek Philippe win — or lose — the AI citation layer that now answers what to buy at $10K+.
Reddit is 40% of AI citations. Inside Reddit, 50 subreddits do the work. The first published ranking of which communities ChatGPT, Claude, Gemini cite most.
Six independent studies, 680M+ citations, one engine. The 50 domains ChatGPT cites most in 2026 — Wikipedia <20%, Reddit ~10%, LinkedIn 14.3%, Forbes 2x.
Everything-PR's running index on how ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews cite Indian cinema. 30 stars, 5 engines, prestige tier, crore problem, South India blind spot.