Data & Statistics
Named-source data on AI search adoption, citation rates, and industry disruption — each stat attributed to its original study.
Research studies, index analysis, research synthesis, reference material, and practitioner analysis from Machine Relations Research — each report classified by content type under the editorial standards.
Multiple independent studies have now measured what predicts AI search citations. They disagree on domain authority, agree on content alignment, and reveal that citation is a source-selection decision — not a ranking signal.
Machine Relations Index v2 data across 17,533 domains reveals that AI answer engines systematically favor certain source types. Market databases have seven domains above a 1% citation rate; analyst research only two. Wire distribution services have zero.
Machine Relations Index data shows Deloitte.com ranks second among all analyst and consulting research sources cited by AI answer engines, with a 1.63% citation rate across all six measured engines and particular strength in fintech and HR queries.
Google Search Console AI reports, citation authority indices, and third-party tracking platforms each measure different aspects of AI visibility. Here is what each layer tracks, where it falls short, and how to use all three together.
Amazon Bedrock, Google Gemini Agent Platform, and Microsoft Azure AI Foundry now ship web search as a native grounding tool for enterprise AI agents. What that means for brand visibility beyond consumer AI chatbots.
Machine Relations Index v2 data shows mordorintelligence.com cited in 1.3% of observed AI answer-engine runs — ranking #34 among 17,342 measured domains and #5 among evidence-qualified market research databases. A market sizing publisher that outranks MarketsandMarkets and trails only G2, Crunchbase, Grand View Research, and Fortune Business Insights in its source category.
Data from 17,342 domains across six AI engines shows which source types earn citations and what separates cited brands from mentioned ones.
Measured citation rates across ChatGPT, Claude, Gemini, Perplexity, Google AI Mode, and Google AI Overviews reveal that each engine selects sources differently. Cross-engine analysis from the Machine Relations Index.
Five independent studies covering 4 million+ citation events show AI engines replace 44–88% of their sources daily, but domain-level stability tells a different story. Here is what the data actually says about citation half-life, engine differences, and what keeps a source cited.
Machine Relations Index v2 data shows prnewswire.com cited in 1.48% of observed AI answer-engine runs, ranking #27 among 17,533 measured domains and #8 among classified editorial publications.
Machine Relations Index v2 data shows Forbes.com cited in 4.27% of observed AI answer-engine runs, ranking #5 among 17,882 measured domains and #2 among editorial publications.
The IAB defined decision-grade AI visibility measurement. Here is what the standard requires, what most tools miss, and what 10,487 observed answer-engine runs reveal about meeting the bar.
How quickly answer engines are replacing traditional search as the first step in commercial discovery.
810M
ChatGPT monthly active users (2026)
OpenAI investor presentations
750M
Google Gemini monthly active users
Alphabet earnings calls
9.7×
AI search traffic year-over-year growth
Similarweb, Cloudflare Radar
−50%
Gartner-predicted traditional search decline by 2028
Gartner Predicts 2024
Fresh Evidence
What independent studies show about where AI systems source their citations.
82–89%
of AI citations come from earned media, not brand-owned content
Muck Rack Generative Pulse (Dec 2025); Fullintel + UConn IPRRC (Feb 2026)
200×
faster AI visibility for brands publishing 12+ citation-optimized pieces per month
AuthorityTech client data, 2024–2025
34%
of AI citations in a given category go to a single publisher
AuthorityTech citation analysis, 2025
Where legacy PR firms are losing revenue and where the money is moving as AI reshapes discovery.
−8.1%
Edelman US revenue decline (2025) — third consecutive year
PRWeek
4–5%
Publicis growth driven by AI/data capabilities
Publicis investor presentations
76%
of PR professionals now using AI tools daily
PRCA AI Adoption Survey 2025
83%
of Google queries are now zero-click
SparkToro Zero-Click Study
Fresh Evidence
Every independent study on the topic lands on the same number: 82–89% of what AI systems cite is earned media. Not press releases. Not brand blogs. Earned coverage in publications the model already trusts.
ChatGPT now handles over 2 billion queries daily (OpenAI, 2025). Gartner projects traditional search will decline 25% by 2026. The brands that secure citation positions in this window will be difficult to displace — because AI citation compounds the way domain authority once did.