What actually moves AI citations, and what doesn't
Most of this category sells on assertion. Below is every claim we make, the study behind it, the sample size and the measured effect — including the findings that are inconvenient for people selling AEO retainers.
| Finding | Measured effect | Detail | Source |
|---|---|---|---|
| Nobody owns the AEO answer in Australia yet — measured, not reported. | 10.2% top-5 share | We asked an AI answer engine 29 questions Australian businesses ask about AI visibility and recorded every citation: 587 citations across 343 domains, the top five holding 10.2% and 69% of domains cited once. For the ten hiring questions, 54 of 196 citations were ranked "best agencies" lists. Our own domain: 0. Re-run monthly. | AEO Services citation index, October 2026 |
| Adding JSON-LD schema markup produces no measurable AI citation lift on its own. | −4.6% / +2.4% / +2.2% | Matched difference-in-differences across 1,885 pages that added schema, measured on Google AI Overviews, AI Mode and ChatGPT. All three statistically indistinguishable from zero. | Ahrefs, 2026 |
| Earned third-party media is cited far more heavily than brand-owned content. | +325% | AI search shows what the authors call a systematic and overwhelming bias toward earned media over brand-owned and social content. | University of Toronto, 2026 |
| Deep entity linking is the highest-impact single change measured. | +34% (+52% Gemini/Bing) | Adding sameAs arrays of at least eight authoritative profiles to Person and Organization JSON-LD, over a 90-day controlled test of 12 changes and ~50,000 citations. | GEO Measurement Study, 2026 |
| Gating content all but removes it from AI answers. | 14 vs 1,847 | Two gated whitepaper landing pages earned 14 citations across 90 days; open equivalents on the same topics earned 1,847. | GEO Measurement Study, 2026 |
| Quotations, statistics and inline citations measurably raise visibility. | +41% / +32% / +30% | Adding relevant quotations raised visibility ~41%, statistics ~32%, citations ~30% and fluency optimisation ~28%. | Princeton GEO paper |
| An active review profile is close to a prerequisite for being recommended. | 1% vs 75.3% | Brands with no active review profile appeared in 1% of answers. Brands that actively collected and responded to reviews appeared in 75.3%. | Onely, 2026 |
| Keyword density does nothing. | zero correlation | Varying keyword frequency by 3× across a control set of six pages showed no correlation with citation share on any engine. | GEO Measurement Study, 2026 |
| AI referral traffic is small but growing fast. | 1–6% of traffic | AI referrals were ~1.08% of traffic in late 2025, rising to ~6.4% for B2B tech by January 2026, growing ~975% year on year. | AirOps, 2026 |
| AI visitors convert at roughly the organic rate, not several times better. | −13% to +60% | A peer-reviewed study of 973 online shops and 164 million purchases found organic search converting about 13% better than ChatGPT referrals (2024–25 data). Platform data from 2026 has AI ahead: Shopify measured AI search visitors converting 49% better than organic in Q1 2026, and Adobe measured AI visits to US retail sites converting 60% better than non-AI visits in July 2026. Roughly level, with an edge on complex, high-consideration purchases. | Kaiser & Schulze, Marketing Science, 2026; Shopify; Adobe |
| Being cited no longer requires ranking on page one. | 17%–38% | Ahrefs found 37.9% of AI Overview citations also ranked in the first ten organic result blocks across 863,000 SERPs in early 2026, against roughly 76% in July 2025 — though it changed its parsing method in between, so part of that drop is method. BrightEdge puts the share at about 17%, roughly flat for a year. Either way, most cited URLs are not top-ten results. | Ahrefs, March 2026; BrightEdge, February 2026 |
| Nobody owns the answer for this category in Australia yet. | 24 firms, ~0 agreement | Four AI engines asked for the best AEO agencies in Australia named 24 different firms, with no engine agreeing on a top firm and only two or three firms appearing more than once. About 40 Australian agencies self-describe as AEO providers; five have published a formal methodology. | Bushletter AI engine test, 2026 |
Where the evidence disagrees with itself
Semrush's study of 304,805 URLs reports a +22% citation lift associated with structured data, which sits awkwardly against the Ahrefs finding of roughly zero. The difference is study design: the Semrush figure is an association — pages with schema do get cited more — while the Ahrefs figure comes from a matched difference-in-differences test that isolates the effect of adding schema to otherwise comparable pages.
Correlation is the likelier explanation: sites that implement schema well also tend to invest in content, press coverage and brand building, and those are the things doing the work. We follow the causal design. If a better-powered causal study reverses this, we will change the page and say so.
What we will not claim
- That we can guarantee a mention, a position or a ranking in any AI answer. The systems are non-deterministic and change without notice.
- That a proprietary score out of 100 means anything. We report citation share against a fixed, published prompt set.
- That AI search has replaced Google. It is roughly 1–6% of traffic today and growing fast.
- That AI visitors convert several times better than other visitors. The best evidence puts them roughly level with organic search.
Where to go from here
- How each engine chooses its sources — the mechanics behind these numbers, engine by engine.
- Is AEO worth it? — the case for and against spending money on this, with the break-even maths.
- What drives AI citations — the ranked list of levers with more detail on each.
Find out where you stand in AI answers
Five minutes. It builds the prompts a buyer would type, you paste the answers back, and it scores mention and citation separately. Runs in your browser; nothing you type is sent to us.
Start the free checkSend one buyer question for a free snapshot by email, or enquire about the $2,500 + GST audit or a monthly programme. Written reply within two business days; no call required.
Send an enquiryPrices are published: audit $2,500 + GST fixed, programme $3,500–$7,500 a month + GST. So is our own score: the AI Citation Index for Australia shows who AI engines cite for AEO questions, and the measured agency ranking puts us where the data does — at zero.