Prefer's first-party research on where AI engines send their citations, published in full, caveats loud. Explore the data, read the statistics, or jump to your industry.
Prefer's own instrument pointed at its own category: 50 fixed buyer prompts through ChatGPT every week, every cited source read and classified, published as a trend.
See the watchPrefer's study of 960 answers from ChatGPT, Perplexity, Gemini and Claude: how often each searches the web, how many sources it cites, and how rarely they agree (29 of 1,329 cited sites were cited by all four). Free to download.
See the studyPrefer measured which sources ChatGPT and Google's AI cite for software buyers. Reddit was the #1 source on ChatGPT (30% of citations) and #2 on Google, ahead of every brand's own site.
See the studyPrefer's measured run of 47 buyer questions across ChatGPT, Perplexity, Gemini, and Claude with web search on. 1237 citations, sliced every way. Explore the interactive data.
Explore the IndexThe headline stats from Prefer's July 2026 study in one place: where citations go, how the engines differ, and how little they overlap. Quotable, sourced, and dated.
See the statisticsThe per-industry companion to the Prefer Index: for each industry, where the citations go, the publishers to get featured in, and the brands AI names most.
Open the cheat sheetsSee how answer engines describe your brand today, and where the openings are to outpace the competition.
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