AEO vs SEO vs GEO

Where the three overlap

All three reward the same foundations: crawlable HTML, a clear topic per page, fast loading, internal links that make the site's structure obvious, and content that genuinely answers the question. If your SEO fundamentals are broken, AEO and GEO cannot work, because nothing retrieves you in the first place.

That is worth saying plainly, because a lot of AEO advice implies SEO is over. It is not. Retrieval in every answer engine leans heavily on conventional indexing and conventional authority signals.

Where they diverge

SEO optimises the page as a destination. The goal is a click, so titles are written to earn one and content can unfold over the whole page.

AEO optimises a block within the page. The goal is for a machine to extract a 40-80 word passage that fully answers a question without the rest of the page. That means question-shaped headings, direct answers immediately beneath them, and no build-up.

GEO optimises a sentence. The goal is that a model composing an answer from four sources chooses your phrasing. That rewards declarative, self-contained, attributable statements — a number, a date, a named mechanism — and punishes hedging.

How to measure each one

SEO: impressions, average position and clicks in Google Search Console. Reliable, lagging by a few days, and free.

AEO: featured snippet and AI Overview ownership for your target questions, checked on a schedule. Partially visible in Search Console's appearance filters, otherwise checked directly.

GEO: a fixed probe set run against ChatGPT, Claude, Perplexity and Gemini, recording mention rate, citation rate and which competitor replaced you. There is no dashboard from the model providers, so this has to be generated.

A sensible order of work

Fix indexing and entity clarity first, because they gate everything. Then restructure your top ten commercial pages answer-first, which serves SEO, AEO and GEO simultaneously. Only then start publishing new pages against the questions where probes show you are absent.

Doing it in the other order — publishing volume before fixing structure — is the most common and most expensive mistake in this space.

What we measured on real domains

Everything below comes from ThoughtForge runs against live domains, not from a study we read. Each run scores three things out of 100: identity (can an engine say who you are without contradicting itself), durability (does your brand survive a multi-turn conversation), and retrieval (can your pages be chunked into something quotable).

Across every domain we have scanned, one number is consistently the worst, and it is not the one people optimise for. Durability sits at or near zero almost everywhere. Brands that get named in turn one disappear by turn three, because nothing on the site gives the model a reason to keep holding onto them.

• thoughtforge.app, July: identity 16, durability 16, retrieval 49, overall 27.
• thoughtforge.app, September, after entity and schema work: identity 52, durability 0, retrieval 48, overall 33.
• A services domain (megap•••••••••••.com.au): identity 28, durability 0, retrieval 47, overall 25.
• An industry association (propertyasso•••••••.com.au): identity 4, durability 0, retrieval 50, overall 18.
• A consultancy (obse•••••••••.com): identity 40 in July, 52 in September; overall 30 to 35.

Where the three disciplines actually diverge

The scores make the difference concrete. A domain can hold a retrieval score of 50 — perfectly respectable page structure, the kind of thing classic SEO rewards — while its identity score sits at 4, as one association we scanned did. Google can rank that site. An answer engine cannot describe it, because the site never states plainly what the organisation is.

So SEO asks whether a page deserves a position, AEO asks whether a passage deserves to be quoted, and GEO asks whether the brand survives being talked about. They overlap, but a good score in one predicts almost nothing about the others.

Which one should you spend on first

If you get organic traffic today and no AI mentions, start with AEO: restructure your best pages answer-first so existing authority becomes quotable. If you get neither, start with identity work, because nothing else compounds until an engine can say what you are.

If you already get mentioned but lose the conversation to incumbents by turn three, that is GEO, and it is the hardest and least crowded of the three. It is also where considered-purchase brands win or lose.

The overlap is smaller than vendors claim

A page can rank well and never be cited, and a page can be cited constantly while sitting on page three. Ranking rewards the whole document; citation rewards one liftable passage. Optimising for one does not accidentally deliver the other.

The practical consequence: keep separate measurements. A single blended visibility score hides exactly the information you need to decide what to do next.

Frequently asked questions

Is AEO just a rebrand of SEO?

No, but it is not a replacement either. AEO is a specialisation within SEO focused on extractable answer blocks rather than on the page as a whole.

Which one should a small site start with?

SEO fundamentals plus entity clarity. Both are cheap, they gate everything else, and they improve AI visibility as a side effect.

Do I need separate content for each?

No. One well-structured page — question headings, direct answers, checkable facts, schema — serves all three. Separate content is a symptom of unclear structure, not a requirement.

Related guides

• How to rank in ChatGPT — ChatGPT does not rank pages, it picks sources to cite. Here is what makes a page citable, how to measure it, and the fixes that change the answer.
• AI search visibility — AI search visibility is how often answer engines mention and cite your brand. How to measure it properly, what moves it, and what to ignore.
• Answer-first content structure — The answer-first structure that gets pages lifted into AI answers and featured snippets, with the exact block pattern to use.