No. 36 · AEO vs GEO · Brain Buddy AI / Sydney

One fails by absence. One fails by description.

These two acronyms get used interchangeably by most of the industry, and a fair amount of the distinction is vendor marketing. Most of the underlying work is the same. What genuinely differs is how each one fails, and that changes what you actually fix.

Section 01

What each term actually means

AEO, answer engine optimisation, is about being the business an engine names when somebody asks a direct question. A person types or speaks a question, the engine returns an answer naming a handful of businesses, and either you are among them or you are not.

GEO, generative engine optimisation, is about how your business is represented when a model generates prose about your category. Nobody has to ask about you specifically. The model writes about the space you operate in, and the version of you that appears in that text is either accurate and useful or it is not.

If those sound like the same thing described twice, that is a reasonable reaction, and it is why the terms get muddled. They separate properly only when you look at how each one goes wrong.

Section 02

The difference that actually matters

	AEO	GEO
The question	Are you named when someone asks?	Is the description of you correct when a model writes about your category?
How it fails	Absence. You are simply not there	Misrepresentation. You are there, described wrongly or out of date
What you fix	Findability, extractable structure, being citable at all	Entity accuracy and the corroborating sources the model reads
How fast it moves	Faster. It responds to work on your own site	Slower. It depends on sources you do not control
What a win looks like	Your name appears in answers to buyer questions	The sentence about you is accurate and current
How you measure it	Named-in-answer rate across a defined prompt set	Accuracy of the description returned, checked on a schedule

Section 03

How much of the work is shared

Most of it, and any agency selling these as two separate retainers is charging twice for the same effort. The shared foundation is the same list either way.

Crawler access. An engine cannot cite a page it cannot reach. Unglamorous, and where a surprising number of problems actually live.
A consistent entity. Same business name, same services, same locations, everywhere the web mentions you. Inconsistency is what produces a confidently wrong sentence about your company.
Extractable structure. Content written so a clean passage can be lifted out and used as an answer, rather than buried in prose that has to be summarised.
Corroboration. Other credible sources saying the same things about you. Models weigh agreement across sources heavily.

What genuinely differs is the last mile: what you monitor, and what counts as a win. That is a real difference. It is not worth two invoices.

Section 04

Which problem do you have?

You can diagnose this in about ten minutes without buying anything. Take the five questions your buyers genuinely ask, put them to ChatGPT, Google AI Mode, Perplexity and Copilot, and read what comes back.

Your name never appears. That is the AEO problem, and it is the more common one. The fix starts with being reachable and citable at all.
Your name appears, described wrongly. Old services, wrong location, confused with a similarly named business. That is the GEO problem, and the fix is entity work plus correcting what the corroborating sources say.
Your name appears and reads well. Then your constraint is somewhere else entirely and neither will help. Check whether enquiries are being captured once they arrive.

Worth knowing before you interpret the results: the engines have no concept of AEO or GEO. These are industry words for things practitioners noticed, not levers inside the model. Everything you can influence sits in your own content and its corroboration.

Section 05

Where this sits against SEO

Underneath both. Neither AEO nor GEO replaces search optimisation, because both depend on the foundations SEO builds: a crawlable site, clear structure, genuine authority. What changed is the target, not the groundwork.

For the longer version of that argument see GEO versus SEO, and for the older pairing SEO versus AEO. If you want the definitions on their own they are at what is AEO and what is GEO. The sourced Australian data behind all of it is on the AI search statistics page.

Frequently asked.

What is the difference between AEO and GEO?

AEO, answer engine optimisation, is about being the business an engine names when someone asks a direct question. GEO, generative engine optimisation, is about how your business is represented when a model generates prose about your category, whether or not anyone asked about you specifically. The work overlaps heavily. The clearest practical difference is the failure mode: AEO fails when you are absent from the answer, GEO fails when you are present but described wrongly.

Are AEO and GEO actually different disciplines?

Less than the marketing suggests, and we would rather say that than sell you two things. Most of the underlying work is shared: crawler access, a consistent entity, content structured so a passage can be lifted cleanly, and corroboration elsewhere on the web. Where they genuinely diverge is in what you monitor and what counts as a win, which is enough to make the distinction useful but not enough to justify two separate retainers.

Which one should I invest in first?

Whichever failure you actually have. Ask an engine the questions your buyers ask. If your name never appears, that is an AEO problem and the fix is being findable and citable at all. If your name appears but the description is out of date, vague, or attached to the wrong service, that is a GEO problem and the fix is correcting the entity and the corroborating sources. Most businesses discover they have the first problem.

Does AEO or GEO replace SEO?

Neither. Both depend on the same foundations SEO builds: a crawlable site, clear structure, real authority. An engine cannot cite a page it cannot reach. What has changed is the target, not the groundwork.

How do I measure either of them?

Not with rankings, which is why the old reporting stops being useful. The honest measures are whether you are named in answers to a defined set of buyer questions, how often, and whether the description of you is accurate. That means running the same prompts on a schedule and recording what comes back. If nobody is monitoring the answers, nobody can tell you whether any of this work moved anything.

Do the engines themselves distinguish AEO from GEO?

No. The engines have no notion of these categories at all. They are industry vocabulary invented to describe two things practitioners noticed. That is worth knowing, because it means neither term describes a lever inside the model. Both describe work you do to your own site and its corroboration, and the model responds to the evidence it can find.

Is one of them harder than the other?

GEO is usually slower to shift, because correcting how you are described depends on sources you do not control, and models carry stale impressions for a while. Getting named at all is often the faster win, since it responds to work on your own site. Neither is instant, and anyone quoting you a date for either is guessing.

Do you sell AEO and GEO separately?

No. They are scoped together because most of the work is shared, and splitting them into two line items would be charging twice for the same effort. Your proposal itemises the actual activities rather than the acronyms.

Find out which oneyou actually have.

The free audit puts your buyers' real questions to the real engines and shows you what comes back: whether you are named at all, and whether the description is right. That is the diagnosis, and it takes sixty seconds. No card.

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