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    Why your Australian business is not showing up in ChatGPT

    6 min read

    The number

    30 domains capture 67% of all ChatGPT citations within any topic. Wikipedia alone provides 26% to 48% of ChatGPT's top-10 citation share.

    If you have searched ChatGPT or Perplexity for a service like yours and not seen your business cited, the reason is structural. The cartel is small and the data is clear.

    Kevin Indig's analysis of 1.2 million ChatGPT responses found that roughly 30 domains capture 67% of all citations within any given topic. For ChatGPT specifically, Wikipedia provides between 26% and 48% of the top-10 citation share, depending on query type. Semrush's analysis of 230,000+ AI prompts found the top citation sources are LinkedIn, YouTube, Reddit, Google itself, and the Google Blog for AI Mode; and Reddit, LinkedIn, NIH, Microsoft, and Google for Perplexity.

    Most Australian small business websites are not on any of those domains. That is why they do not show up.

    The citation cartel is real

    The shape of AI search is different from Google's organic results. Three findings to internalise.

    Concentration. The top 5 domains receive 38% of all AI Overview citations. The top 10 receive 54%. The top 20 receive 66%. For comparison, organic Google has thousands of sites competing per query. AI search effectively narrows that field by 99%.

    Overlap with organic. seoClarity tracked 432,000 keywords and found 97% of AI Overviews cite at least one source already in the top 20 organic results. BrightEdge confirmed the same pattern over 16 months: AIO citation overlap with the top 10 organic results grew from 32% to 54%. Translation: if you are not in the organic top 20 for a query, you have almost no chance of being cited in the AI Overview for that query.

    Reddit and UGC dominance. Reddit alone accounts for around 21% of all AI Overview citations after a 450% surge between March and June 2025. For Perplexity, Reddit can hit 46.7% of citations in some query categories.

    What gets a page cited

    A peer-reviewed study from Princeton, Georgia Tech and the Allen Institute for AI tested 9 on-page tactics across 10,000 queries on 5 different AI engines. The biggest visibility lifts came from three things:

    1. Adding statistics to a page lifted AI visibility by up to 40%.

    2. Adding direct quotes from authoritative sources lifted it by 28%.

    3. Citing sources inline lifted it by another 30%.

    Position-5 pages benefited the most, with a +115% visibility increase. Position-1 pages saw almost no movement, because they were already being picked up.

    Cyrus Shepard's May 2026 meta-analysis of 54 separate studies on AI citation factors found the strongest single predictor of citation is brand search volume, with a 0.334 correlation. Stronger than backlinks. Self-contained factual passages with named entities, dates and numbers (scored 8.3/10), explicit phrasing with no hedging (8.1/10), and pages that cite their own sources (8.0/10) followed.

    The lever for Australian small business

    If you sell professional services, trades, hospitality, real estate or anything else in Australia, the question is not whether to do AI SEO. It is whether your business is on any of the 30 domains the engines actually pull from.

    Practical reads from the data above:

    • Get into Wikipedia and Wikidata. Wikipedia is the single largest source for ChatGPT. Wikidata is the easier on-ramp; it has a lower notability bar and feeds Google's Knowledge Graph, which feeds AI engines.

    • Be active on Reddit and LinkedIn. Not posting links to your business. Posting useful answers under your own name in subreddits where your customers ask questions. Reddit alone is the #1 cited source across every major engine.

    • Add specific numbers, dates and source citations to your own site. The Princeton study is unambiguous: stat-rich pages get cited at higher rates. Pages that name their sources get cited even more.

    • Rank in the organic top 20. Not the top 3, the top 20. 97% of AI citations sit inside that band, and BrightEdge's data shows the overlap is increasing year over year.

    • Build brand search volume. People searching your name on Google is the strongest single predictor of getting cited by ChatGPT, Perplexity, Gemini and Claude.

    What does not help

    A few things being sold as AI SEO are not supported by the data.

    llms.txt. Adoption is around 5-15% of domains in early 2026, major AI crawlers ignore it, and Google's John Mueller compared it to the deprecated keywords meta tag. Zyppy's meta-analysis scored it 2/10. No measured citation lift.

    Schema markup beyond the basics. Article and Organization schema are hygiene. FAQ rich results were dropped by Google in May 2026. ClaimReview deprecated in June 2025. Schema correlates weakly with citation (5.6/10), but is not a multiplier.

    Blocking AI crawlers as leverage. BuzzStream analysed 4 million AI citations and found 70.6% of sites blocking ChatGPT-User still got cited anyway. Most citations come from cached training data, syndication, or third-party mentions. Blocking does not stop you being cited; it just costs traffic from on-demand fetcher bots.

    Where Cluo fits

    Cluo's portal tracks where your business shows up in ChatGPT, Gemini, Perplexity and Google. From $50 a month, daily updates, the same dashboard for AI visibility and traditional Google rank.

    If you do not know whether your business is in the citation cartel for your industry, that is the place to start. You cannot move what you have not measured.