What the evidence shows

Six independent studies across academic institutions, industry analysts, and PR research firms converge on the same finding: 82–89% of what AI engines cite is earned media. Machine Relations names the discipline that delivers earned authority at the scale AI discovery requires.

SourceFindingImplication for Machine Relations
Fullintel + UConn IPRRC (2026)89% of AI citations are earned media; 95% unpaidEarned Authority (Layer 1) is the primary AI citation mechanism
Muck Rack — 1M+ citation dataset (2025)82% of AI-cited links are earned media across GPT, Gemini, ClaudeScale confirms the pattern: publications AI already trusts are where AI citations come from
Chen et al., ACM / University of Toronto (2025)“Systematic and overwhelming bias towards Earned media over Brand-owned content”Academic GEO research independently concludes: dominate earned media to dominate AI citation
Princeton + Georgia Tech, SIGKDD (2024)Statistics and credible source citations improve AI citation rates 30–40%Content from credible third-party publications (earned media) is structurally preferred by AI systems
Gartner (2024)25% decline in traditional search volume projected by 2026; PR spend to double by 2027AI-mediated discovery is replacing traditional search — and earned media is the infrastructure that serves it
OtterlyAI — 1M+ citation dataset (2026)Forbes, Reuters, Wikipedia dominate AI citations; brand-owned content rarely citedThe publications AT places clients in are the same ones AI engines trust by default

The convergence: GEO researchers, PR agency executives, management consultants, and academic institutions arrived at the same conclusion independently — earned media in trusted publications is the primary source layer for AI citation. Machine Relations is the discipline that operationalizes this at the campaign level.

External voices on the thesis5

Practitioners and researchers unaffiliated with AuthorityTech identifying earned media in trusted publications as the primary driver of AI search visibility — the Machine Relations thesis, stated without the label.

Forbes Business Council piece argues AI summaries have made PR more important than ever — 'Public relations (PR), long treated as a parallel track to Search, is suddenly having an outsized influence on the answers people see.'

Public relations (PR), long treated as a parallel track to Search, is suddenly having an outsized influence on the answers people see. Mentions in respected outlets, expert commentary... [are what shape AI answers].

PR now has outsized influence on AI answers — Forbes Business Council, January 2026

Forbes Business Council (Forbes.com) →

Forbes Agency Council piece on 'Using Public Relations to Support Your GEO Strategy' opens by stating GEO success starts with earned media and cites Muck Rack: 89% of all AI-cited links are earned media.

Muck Rack analyzed over one million links cited by ChatGPT and found that 89% of citations originated from earned media... Companies proactively engaged in PR efforts are reaping a new advantage: visibility within generative AI engines.

89% of AI citations from earned media — Muck Rack (1M+ citation dataset), cited in Forbes

Forbes Agency Council (Forbes.com) →

Deloitte's GEO strategy guide for CMOs identifies earned media and thought leadership as a primary tactic: 'build brand equity through earned media and thought leadership' alongside technical GEO tactics.

Manage reputation proactively. Marketers should update brand information in industry databases, encourage customers to evaluate products on review websites, and look for opportunities to build brand equity through earned media and thought leadership.

Deloitte GEO strategy for CMOs: earned media is a primary AI visibility tactic

Deloitte via Wall Street Journal CMO Today →

Peer-reviewed GEO research finds AI search engines show 'systematic and overwhelming bias towards Earned media (third-party, authoritative sources) over Brand-owned and Social content.' Strategic recommendation: 'dominate earned media to build AI-perceived authority.'

AI Search exhibit a systematic and overwhelming bias towards Earned media (third-party, authoritative sources) over Brand-owned and Social content, a stark contrast to Google's more balanced mix.

AI search shows systematic bias toward earned media over brand-owned content — Chen et al. ACM 2025

arXiv / ACM 2025 (Generative Engine Optimization: How to Dominate AI Search) →

17 PR and marketing executives advising on GEO strategy unanimously center their guidance on earned media: 'success with GEO depends on creating content that resonates with both audiences and algorithms — and it starts with credibility built through earned media.'

Success with GEO depends on creating content that resonates with both audiences and algorithms — and it starts with credibility built through earned media. Mentions in reputable outlets that are structured, quotable, and clearly attributed have a higher chance of appearing in AI snippets.

17 PR agency executives: GEO success 'starts with credibility built through earned media' — Forbes 2025

Forbes Agency Council (Forbes.com) — 17 executives →

Independent term adoption51

Sources that used Machine Relations terminology or described the Machine Relations thesis without AuthorityTech authorship. The category is being adopted independently.

Media Relations Are Becoming 'Machine Relations' — and Most Brands Aren't Ready

Gab Ferree — Founder, Off the Record

An independent communications professional coined 'machine relations' as the natural evolution of media relations in the AI era.

Media relations are becoming machine relations. It's on the comms professionals to learn the patterns of AI and then take action on them.

Machine Relations is defined as the practice of earning visibility, authority, a

Carmen Hughes

Machine Relations is defined as the practice of earning visibility, authority, and citations across AI-powered search platforms like ChatGPT, Perplexity, and Gemini.[4]

Machine Relations is the practice of earning visibility, authority and citations across AI-powered search platforms: ChatGPT, Perplexity, Gemini ...[4]

AuthorityTech’s public framework explicitly states that the AI visibility indust

AuthorityTech’s public framework explicitly states that the AI visibility industry is experiencing naming fragmentation and positions Machine Relations as a unified discipline that contains GEO and AEO as tactics rather than standalone categories.

The AI visibility industry is currently experiencing a naming fragmentation identical to what SEO experienced in the early 2000s.

Industry debate is increasingly splitting between those who treat AEO/GEO as dis

Barry Schwartz

Industry debate is increasingly splitting between those who treat AEO/GEO as distinct disciplines and those who say AI search optimization is largely just SEO, with Google representatives quoted as saying the core principles of SEO generally apply and that there is no need for new acronyms.

You don’t need GEO, LLMO, or anything else.

There is currently no common taxonomy for AI optimization, with agencies and mar

Cowell

There is currently no common taxonomy for AI optimization, with agencies and marketers adopting interchangeable acronyms like AEO, GEO, and GSO to describe the same trend of ensuring AI crawlers understand brand information for synthesized answers[4].

This is such a new area, that currently there is no common taxonomy. So agencies, publishers, marketers and SEO specialists have adopted a bunch of different acronyms to describe the same trend[4].

Ignite X launched a dedicated Machine Relations practice to help brands earn AI

Ignite X launched a dedicated Machine Relations practice to help brands earn AI search visibility through strategic communications at the intersection of communications, content strategy, and AI[4].

Machine Relations is now emerging as a new discipline at the intersection of communications, content strategy, and AI.

Ignite X differentiates its Machine Relations practice by focusing on PR-rooted

Ignite X differentiates its Machine Relations practice by focusing on PR-rooted authority and credibility signals rewarded by AI engines, rather than SEO tactics[6].

Machine Relations is now emerging as a new discipline at the intersection of communications, content strategy, and AI.

PRSA’s current definition still frames public relations around strategic communi

PRSA’s current definition still frames public relations around strategic communication and mutually beneficial relationships, showing that the formal PR canon has not yet adopted Machine Relations terminology.

Public relations is a strategic communication process that builds mutually beneficial relationships between organizations and their publics.

The article frames SEO/AEO/GEO/LLMO/AISO as a naming-fragmentation problem, argu

Ben Steele

The article frames SEO/AEO/GEO/LLMO/AISO as a naming-fragmentation problem, arguing that the field lacks consensus and that multiple overlapping labels now compete to describe the same AI-search optimization work.

There is no universally accepted terminology for optimizing visibility in AI-generated results.

Industry coverage notes that the SEO community is actively debating whether AEO

Danny Goodwin

Industry coverage notes that the SEO community is actively debating whether AEO and GEO are meaningfully different disciplines or largely new labels for the same AI-search optimization work, highlighting naming fragmentation rather than consensus.

Whether you call it SEO, AEO, GEO, or AI SEO, the underlying goal is the same: get your content cited, surfaced, and trusted by AI systems.

Academic & industry research28

Peer-reviewed and industry research on why earned media is the dominant source layer for AI-generated citations.

AI Media Citations and the Role of Credible Journalism

Angela Dwyer · IPRRC Academic Conference

47% of all AI citations in responses came from journalistic sources. 89%+ of cited links were earned media. 95% were unpaid.

89% of AI citations are earned media; 95% unpaid — IPRRC presentation

Generative Engine Optimization: How to Dominate AI Search

Mahe Chen, Xiaoxuan Wang, Kaiwen Chen, Nick Koudas · arXiv / ACM 2025

AI search engines show 'systematic and overwhelming bias towards Earned media (third-party, authoritative sources) over Brand-owned and Social content.' Researchers conclude the primary GEO strategy is to 'dominate earned media to build AI-perceived authority.'

Systematic earned media bias confirmed across ChatGPT, Perplexity, Gemini — Chen et al. 2025 (5M+ data points)

Optimizing AI-Generated Content for Generative Engine Optimization

Aggarwal et al. · SIGKDD 2024

Adding verifiable statistics to content improves AI citation rates by 30-40%. Citing credible sources increases probability of being cited. Structure matters more than volume.

30-40% improvement in AI citation rates from structured, statistic-rich content

5W's April 2026 study quantifies that 85.5% of AI citations reference earned med

5W Research Team · 5WPR

5W's April 2026 study quantifies that 85.5% of AI citations reference earned media sources, establishing it as the primary input for brand visibility in AI-mediated discovery[3][4].

85.5%

A Generative Engine Optimization study of 87 stories across 8 AI platforms found

Stacker Research Team · Stacker

A Generative Engine Optimization study of 87 stories across 8 AI platforms found that distributing content through earned media channels delivers a 239% median lift in AI search visibility compared to brand-owned content alone[2].

239% median lift

The AI Citation Economy: 1M+ Data Points

OtterlyAI Research · OtterlyAI

73% of sites have technical barriers blocking AI crawler access. Community platforms and brand domains capture outsized citation share. Wikipedia maintains strong performance across ChatGPT.

73% of sites block AI crawlers — invisible to citation systems by default

Independent analysis in Generative Pulse indicates that earned media dominates n

Muck Rack Editorial Team · Muck Rack

Independent analysis in Generative Pulse indicates that earned media dominates non-paid AI citations, supporting the idea that AI engines preferentially surface third-party coverage over brand-owned content.

Over 85% of non-paid AI citations come from earned media sources.

How Press Release Distribution Drives LLM Citations

Signal Genesys Research · Signal Genesys

179.5 million citation records, 6.1 million unique domains, 6 LLM platforms. 88.4% domain citation coverage. Perplexity drives largest citation volume of tested platforms.

179.5M citation records: distribution at scale drives AI citation reach

AI Citation Refresh — January 2026

Yext Research · Yext Research

17.2 million distinct AI citations analyzed across Q4 2025. No single optimization strategy works across ChatGPT, Gemini, Perplexity, Claude. Model-specific citation behavior requires multi-surface approach.

17.2M citations analyzed: no single tactic dominates all AI platforms

Earned Media Still Drives Generative AI Citations as Press Release Visibility Grows

Muck Rack Research Team · GlobeNewswire

82% of all AI-cited links are earned media. 95% unpaid. Press releases grew 5x but still represent only 1% of total AI citations.

82% of AI citations = earned media (1M+ citation dataset)

Systematic testing of eight generative search tools found that only 49% of answe

Klaudia Jaźwińska · Columbia Journalism Review Tow Center

Systematic testing of eight generative search tools found that only 49% of answers contained any citation at all, and just 31% of those links pointed to the original publisher, with premium chatbots providing more confidently incorrect answers than free counterparts.

Only 49% of answers from eight leading AI engines contained any citation; just 31% of those links pointed to original publisher

Muck Rack’s May 2026 Generative Pulse update reports that earned media drives 84

Muck Rack’s May 2026 Generative Pulse update reports that earned media drives 84% of AI citations, reinforcing that AI engines preferentially cite third-party editorial sources over brand-owned content.

84% of AI citations

Market adoption signals38

PR firm reorganizations, analyst forecasts, and product launches that reflect the shift Machine Relations describes — separate from the thesis-convergence voices above.

Ignite X announced a dedicated Machine Relations practice via GlobeNewswire, positioning Machine Relations as an emerging discipline in AI search visibility.

Machine Relations is now emerging as a new discipline at the intersection of communications, content strategy, and AI.

Launch announced April 9, 2026

GlobeNewswire →

Jaxon Parrott's Entrepreneur article arguing that public relations has become Machine Relations was syndicated to Yahoo Finance and MSN, then amplified by Entrepreneur on X.

Article live on Entrepreneur, syndicated by Yahoo Finance and MSN, and shared by Entrepreneur's official X account on May 6, 2026

Entrepreneur / Yahoo Finance / MSN / X →

Press release syndicated to Yahoo Finance, Business Insider Markets, Benzinga, Barchart, and GlobeNewswire defining Machine Relations as the discipline where GEO, AEO, SEO, and PR converge in AI search. Appeared in Google AI Overview within hours of publication.

5 syndication nodes (DA 62-95) live within hours; appeared in Google AI Overview same day

Yahoo Finance / GlobeNewswire →

AI-driven discovery restores PR's strategic role. PR outputs — media coverage, expert commentary, institutional validation — are exactly what AI systems prioritize.

Gartner: PR spend projected to double by 2027 driven by AI discovery needs

PRNewswire →

Academic paper published on arXiv exploring machine relations era dynamics in AI brand discovery.

Academic paper validating MR dynamics in AI brand discovery

arXiv →

Earned media's role in AI search results is growing dramatically, with 85% of GEO results from earned sources and the figure increasing.

85% of GEO results from earned media

O'Dwyer's →

The rise of AI search engines is reordering communications priorities, elevating media relations as the primary gateway for brand discovery since 82% of AI-generated answer citations come from earned media.

82% of citations in AI-generated answers come from earned media

PRGN →

44% of AI-powered search users now consider AI their primary source of insight, and Google AI Overviews appear in over 60% of search queries, establishing AEO and GEO as essential operational disciplines alongside traditional SEO[5].

44% of AI-powered search users prioritize AI as primary insight source; Google AI Overviews present in 60%+ of queries

Marketing Dive / McKinsey Analysis →

89% of links cited by AI systems come from earned media sources, with 95% of AI citations originating from non-paid media, indicating a fundamental shift in how LLMs source brand information[6].

89% of links cited by AI come from earned media; 95% of AI citations from non-paid media[6]

Muck Rack / APCO Worldwide →

A major 2026 PR trend is 'Zero-Click PR,' measuring success by brand presence in AI-generated answers using specific Machine-Readability KPIs.

90%

Newsfile Corp Blog →

Edelman US revenue declined 8.1% in 2025 — third consecutive year of decline.

−8.1% Edelman US revenue (2025) — 3rd consecutive annual decline

PRWeek →

25% decline in traditional search volume projected by 2026 as AI search grows.

25% traditional search volume decline projected — Gartner 2024

Gartner Predicts 2024 →