What is… · updated 2026-08-17

What is AEO (Answer Engine Optimization)?

AEO, or Answer Engine Optimization, is the practice of making a website more likely to be named in an AI assistant's answer. Where SEO competes for a place in a list of ten links, AEO competes to be quoted inside a single written answer — where there is no second page.

1

How is AEO different from SEO?

SEO wins a ranking. AEO wins a mention. That sounds like a small distinction and is not.

In Google, being tenth still gets you some clicks. In an AI answer there is no tenth place — you are either named in the paragraph or you are absent. And because AI answers are assembled from passages rather than whole sites, a small site with one genuinely well-written page can be quoted ahead of a large one.

The two are not in conflict. Almost everything that helps AEO also helps SEO, and being classically retrievable is a precondition for being quoted at all.

2

What actually makes an AI quote a page?

Research into generative engines — including peer-reviewed work presented at KDD — points at a few things more consistently than the rest.

  • Direct relevance. Models weight straightforward wording overlap and meaning far more heavily than an authoritative tone. Writing a page that plainly answers the question beats writing one that sounds impressive.
  • Specific, checkable facts. Statistics, quotations and named sources measurably raise the odds of being cited. Vague marketing copy does not.
  • Answer blocks. A question-shaped heading followed immediately by a short, self-contained answer gives the model a clean unit to lift.
  • Freshness. A dated, recently-updated page is far more likely to be cited on commercial questions than an undated one.
  • Being readable at all. If an AI crawler cannot fetch your pages, nothing else on this list applies.
3

Where do AI assistants get their information?

Not mainly from company websites, which surprises most people.

Community and reference sites — Reddit, Wikipedia, YouTube, established publications — account for a large share of what AI assistants cite. Comparison and 'best tool for X' pages also do disproportionately well, because that is the shape of content a model reaches for when someone asks for a recommendation.

The practical consequence: your own site should be readable, accurate and answer-shaped, but being talked about elsewhere does at least as much work. AEO is not purely an on-site exercise.

4

Do the different AI assistants behave the same way?

No, and treating them as one target wastes effort. They cite strikingly different sources, and they name brands at very different rates.

Perplexity mentions specific brands readily and indexes quickly, which makes it the fastest place to see whether your work is having any effect. ChatGPT is considerably more conservative and leans on reference sites, so it tends to be the last to come around. Google's AI answers sit closer to classic search, so ordinary SEO carries further there.

A sensible order is Perplexity first, Google's AI answers next, ChatGPT last.

5

Common questions

Is AEO replacing SEO?

No — it extends it. Pages that do well in AI answers are usually well-optimised for classic search too. The main change is what you optimise the page's structure for: being quotable in one block, rather than only being rankable.

How do I measure AEO?

Ask the assistants directly. Write down ten questions a real customer would ask, put them to ChatGPT, Claude, Gemini and Perplexity, and record how often you are mentioned and how often you are linked. Repeat monthly. There is no equivalent of Search Console yet.

How long does AEO take to work?

Perplexity can reflect changes within weeks. ChatGPT often takes months, because it depends partly on other sites mentioning you rather than on your own pages. Anyone promising fast results across every engine is guessing.

Does structured data help with AEO?

It helps, though the size of the effect is often overstated by tools that sell structured-data services. It makes your facts easier to extract accurately, which is worth doing — but it will not rescue a page that does not answer the question, or a site an AI crawler cannot reach.

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Related: What is AI crawler? · What is GPTBot? · What is website audit?

What is AEO (Answer Engine Optimization)? · Scanvify