GEO Explained: Getting Cited by AI Search Engines

SEO optimises for ranking position in a list of links a human scans and clicks. GEO optimises for extractability — whether a language model can lift a clear, self-contained fact or definition out of your page and use it in a synthesized answer, often without the user ever visiting your site.

That changes the unit of optimisation. Instead of a page competing for one ranking slot, individual paragraphs and sentences compete to be the clearest, most citable answer to a specific question.

In practice, AI answer engines favour content that states a claim plainly in the first sentence of a paragraph, defines terms instead of assuming familiarity, and backs claims with specific, checkable details rather than vague marketing language.

Structured formats help too: numbered steps, comparison tables, and clearly labelled FAQ sections are easier for a model to parse and quote accurately than a wall of narrative prose.

The overlap is real: both reward genuine expertise, clear structure, fast and crawlable pages, and content that answers a specific query completely. A technically sound, well-structured page written for humans is already most of the way to being GEO-friendly.

The divergence shows up in tone and format — GEO rewards concision and explicit structure over the longer narrative or persuasive copy that sometimes helps classic SEO rankings and on-page engagement.

The term GEO comes from a 2023 research paper by Aggarwal and colleagues, which tested different ways of rewriting web content and measured how visible it became in generative engine answers. Adding citations to credible sources, relevant statistics and quotations were among the most effective methods — improving visibility by up to around 40% in their experiments — while keyword stuffing did not help.

That matches what I see in practice: specific, sourced, clearly written passages get quoted; generic marketing copy doesn't.

AI search tools can only cite pages they can reach. OpenAI, for example, documents separate crawlers for search (OAI-SearchBot) and for model training (GPTBot), and Google explains that its AI features draw on pages that are indexed and eligible for snippets in Search. Check robots.txt for broad rules that block AI search crawlers by accident — and decide deliberately which ones to allow.

The main places people now get AI-generated answers are Google's AI Overviews and AI Mode, ChatGPT with search, Perplexity, Microsoft Copilot (built on Bing's index) and Claude with web search. Each retrieves sources in its own way, but all of them start from crawling and indexing the web. That's why being well indexed in both Google and Bing matters for GEO, not just Google.

List the questions your customers ask most, and ask them to two or three AI assistants. Note which sources are cited and what they have in common — usually direct answers, specific facts and clear structure. Then improve your own page for each question: answer it in the first sentence of a clearly headed section, add evidence and sources, include examples from your own experience, and make sure the page is indexed. Re-check the same questions every month or two.

AI systems can summarise generic information from anywhere. What makes a source worth citing is something it can't get elsewhere: first-hand experience, a clear process you actually use, local knowledge, original data or a well-argued opinion. Pages that simply rephrase what everyone else says rarely earn citations — or rankings.

Imagine a page that says 'We offer world-class website redesign services with cutting-edge technology.' An AI system has nothing to cite. Rewritten, the same page opens a section with 'A website redesign usually keeps your existing platform and content but changes the design, layout and navigation; a rebuild replaces the underlying platform.' It then lists what's included, typical timelines and the factors that affect cost, links to Google's documentation on site migrations, and ends with FAQs such as 'Will I lose my rankings?'. Every paragraph now answers something a person might ask an AI assistant.

The page also becomes more useful to human visitors — which is the point. GEO done well is simply clearer, better-evidenced content.

Pick your five most important service or guide pages. For each, write down the main question it answers, rewrite the first sentence of the relevant section as a direct answer, and add at least one specific fact with a source. Then confirm the page is indexed and that robots.txt doesn't block AI search crawlers. Small, focused changes like these are how most sites begin to appear in AI answers.