Comparison
GEO vs AEO vs SEO, three different jobs
Three acronyms, sold interchangeably, describing genuinely different work with different metrics and different timescales. Here is the distinction that holds up, and how to decide which one your problem actually is.
At a glance
The distinction in one table
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank in a list of links | Be cited inside a generated answer | Be described accurately in that answer |
| Unit | The page | The extractable passage | The entity |
| Metric | Position, sessions, CTR | Citation share per question | Mention rate, factual accuracy |
| Outcome | A click | A quotation and attribution | A correct characterisation |
| Main lever | Relevance and authority | Specific, sourced, extractable content | Entity records and third-party coverage |
| Feedback speed | Weeks to months | Days to weeks (retrieval) | Months to years (memory) |
| Visible in analytics | Yes | Barely | No |
SEO gets you a click. AEO gets you quoted. GEO gets you described correctly.
SEO
Search Engine Optimization
Earning a position in a ranked set of links, where the reader clicks through to your site. The work is relevance, authority, and crawlability; the measurement is rankings, impressions and organic sessions. Mature, well understood, and still where most qualified discovery happens.
Google still sends about 87.6% of search referrals; every AI assistant combined sends roughly 0.29%.
The honest framing in 2026: SEO's ceiling is lower than it was, because a growing share of queries are resolved without any click. Its floor has not moved. Google still sends the overwhelming majority of referral traffic, and every AI assistant combined sends a fraction of a percent.
AEO
Answer Engine Optimization
Earning a citation inside the generated response. The assistant synthesizes an answer and footnotes a handful of sources; AEO is the work of being one of them.
Why the unit is the passage
Answer engines chunk retrieved documents and rank individual passages, then generate an answer conditioned on the ones they selected. A page is never quoted: a span of text is.
This is why a page that answers the question in its opening lines outperforms a better-written page that arrives at the same conclusion in paragraph nine. Over half of sampled AI Overview citations came from the first 30% of the cited page.
55% of sampled AI Overview citations came from the first 30% of the cited page.
Measured in citation share across a fixed set of questions, not in rankings. And with the important caveat that citation rarely produces a click: the AI Overview's own cited links are followed roughly 1% of the time.
GEO
Generative Engine Optimization
Shaping how an assistant *describes* you, whether or not it links. Closer to entity and reputation management than to search marketing, and the discipline most organisations have no owner for.
The term was given its precise sense by the KDD 2024 paper that measured how content modifications affect visibility in generated answers, which is also the origin of most credible claims in this whole field.
Targeted content changes raised visibility in generative engine responses by up to 40%.
GEO-bench: roughly 10,000 queries across nine datasets. Authority-style edits, adding citations, statistics and quotations, outperformed cosmetic edits such as rewriting, simplification and keyword work. Effect size varied by domain.
GEO matters commercially in a way that is easy to underrate. A citation attached to an inaccurate description is arguably worse than no citation at all, because the error now carries the engine's authority. If an assistant tells a buyer you do not serve their market, or names a capability you retired two years ago, the citation worked against you.
- Entity resolution, can the system tell your brand name, legal name and domain are one organisation?
- Category association, does anything on the open web plainly state which category you are in?
- Corroboration, does any source other than your own site say so?
Sequence
They layer, and the order is not optional
-
01
Entity first
If engines cannot resolve who you are, nothing you publish can be attributed to you. This step produces no visible output, which is exactly why it gets skipped.
-
02
Technical SEO second
Retrieval-based assistants search the web. A page that cannot be crawled cannot be retrieved. The old substrate still holds up the new layer.
-
03
AEO third
Given a findable page, does it contain a passage worth quoting, question-shaped, specific, sourced?
-
04
GEO continuously
Whether the description is accurate depends on the whole web's account of you, which is slower and less controllable than anything above.
The common failure is starting at step three. A beautifully structured, quotable page for a company the engines cannot resolve produces a citation nobody can connect to a business.
Decision
Which one is your actual problem?
You rank, and traffic is falling anyway
Likely a zero-click problem rather than a ranking one. Check whether your head queries now trigger AI summaries. If they do, the traffic is not coming back and the response is AEO, not more SEO.
Assistants answer your category but never name you
A citation problem. Your content is probably not extractable, not specific enough, or not fresh. Start with the pages that already answer buyer questions.
Assistants name you but describe you wrongly
An entity and corroboration problem. More content will not fix it; the correction has to appear in sources other than your own site.
Assistants have never heard of your category
A demand problem wearing a visibility costume. Being cited for questions nobody asks is not an outcome.
The obvious question
No, SEO is not dead
Asserted constantly by people selling the newer disciplines. The data does not support it.
Classical search still drives the majority of qualified discovery for most businesses. What has changed is that a growing share of queries are answered without a click, and that absence is invisible in conventional analytics: no impression, no ranking change, no bounce. You do not see the shortlist you were left off.
AEO and GEO are additions to the measurement surface, not replacements. A company that abandons technical SEO to chase citations discovers that retrieval-based assistants could not crawl the pages it wanted quoted.
Sources
Where these numbers come from
Every figure on this page is external and linked. The studies measure different populations over different windows, so read them as converging evidence rather than one authoritative number.
- Omnibound, AEO statistics compilation 202655% of sampled AI Overview citations came from the first 30% of the cited page. www.omnibound.ai ↗
- Aggarwal, Murahari, Rajpurohit, Kalyan, Narasimhan & Deshpande, ACM SIGKDD 2024Targeted content changes raised visibility in generative engine responses by up to 40%. arxiv.org ↗
- Pew Research CenterWhen an AI Overview is shown, users click one of its cited source links about 1% of the time. searchengineland.com ↗
- Omnibound, AEO statistics compilation 2026Roughly 85% of AI references point to third-party platforms rather than brand-owned sites. www.omnibound.ai ↗
Keep reading
FAQ
Common questions
What is the difference between AEO and GEO?
AEO earns the citation; GEO governs how the assistant describes you whether or not it links. They share a substrate, entity records, provenance, semantic structure, which is why they are usually run together.
Should I stop doing SEO?
No. Google still sends the overwhelming majority of referral traffic, and retrieval-based assistants search the web: a page that cannot be crawled cannot be cited. SEO is the substrate, not the competitor.
Which should I invest in first?
Entity resolution, then whichever surface your buyers actually use. If they research in chat assistants, retrieval work pays back in weeks. If your category is decided by reputation and incumbency, model memory matters more and the work is third-party coverage with a much longer lag.
Do AEO and GEO need different suppliers?
Not necessarily, but they need separate measurements and separate timelines. A supplier reporting them as a single number is either not distinguishing them or hoping you will not ask.
Where did the term GEO come from?
From Aggarwal et al., 'GEO: Generative Engine Optimization', presented at ACM SIGKDD in 2024, which measured how specific content changes affect citation in generated answers. AEO grew out of practitioner usage around featured snippets and voice answers.
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