Data
Every CSV behind every chart. Free to reuse under CC BY 4.0 with credit to Strandline Research.
- Dataset totals One row: runs, projects, prompts, requests, answers, failed requests, citations, distinct URLs and domains, own-site citations and their share, and the first and last answer dates (US Eastern). From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Projects One row per project under an anonymous label (P01 to P12): scan schedule, runs, prompts, answers, failed requests, citations and share of all citations. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Prompt types One row per prompt type (discovery, competitor alternatives, problem): prompts, prompts per project, answers and citations. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Answers and citations by engine One row per engine: model id, requests, failed requests, answers, citations, mean, median and maximum citations per answer, answers with no citation and their share, citations per answer that cites at least one source, distinct domains and URLs, citations per answer relative to ChatGPT, and first and last answer dates. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Engine summary by part of the dataset The engine summary for the daily-scan project and for the 11 single-scan projects: answers, citations, mean and median citations per answer, and answers with no citation. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Answers with no citation, by prompt type One row per part of the dataset (all projects, daily-scan project, single-scan projects), engine and prompt type: answers, answers with no citation and their share. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Cross-engine overlap For prompt-runs in which all four engines answered: distinct URLs or domains cited, and how many were cited by one engine, by two or more and by all four, for all projects and each part of the dataset. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Overlap by engine For each engine: URLs and domains it cited in prompt-runs where all four engines answered, and how many another engine also cited for the same prompt in the same run. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Overlap by engine pair For each pair of engines: URLs and domains cited by either and by both for the same prompt in the same run, summed over prompt-runs. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Day-over-day retention Daily-scan project only. One row per engine: days answered, answers, URLs per answer, consecutive-day pairs, URLs cited on day one and still cited the next day, URL retention overall and when both days carried citations, domain retention, distinct URLs over the full period and the share cited on one day only. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Retention by days elapsed Daily-scan project only. One row per gap of 1 to 28 days: the share of cited URLs the same engine cited again for the same prompt after that many days, per engine, with the number of URLs behind each share. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Citations by source type One row per source type: citations and share for all engines, and citations and share for each engine. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Source types by prompt type One row per prompt type and source type: citations and share of that prompt type's citations. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Answers citing each source type One row per engine and source type: answers, answers citing at least one source of that type, and their share. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Top 50 cited domains The 50 most-cited domains, citations of brands' own sites excluded: rank, citations, share of all 22,141 citations, number of engines and of projects citing the domain, domain group, and the share of the domain's citations whose URL matches the listicle rule. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Domains by number of projects citing them One row per number of projects (1 to 12): domains cited for that many projects and their citations, with the domains named for 8 or more projects. Own-site citations excluded. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Concentration of citations For all engines and each engine: citations, distinct domains, citations to the top 10 domains and to the top 1% of domains with their shares, the number of domains that account for half of citations, and domains cited once. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Perplexity references by list rank One row per position in Perplexity's source list: sources listed, sources the answer text points to with a numbered marker, and their share. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Perplexity references by source type One row per source type plus all sources: sources listed by Perplexity, sources the answer text points to, their share and the median list rank. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.
- Perplexity references in the top five Sources listed in ranks 1 to 5 of Perplexity's source list, Reddit against all other domains: sources listed, referenced in the text, and share. From No. 01: ChatGPT, Perplexity, Gemini and Claude rarely cite the same page for the same buyer question.