What is the difference between AEO and SEO?

SEO optimizes for position in a ranked list of links, and its outcome is a click. AEO (answer engine optimization) optimizes for inclusion in the generated answer an assistant writes above or instead of those links, and its outcome is being named and cited. Same site, different unit of success.

Does AEO replace SEO?

No. Answer engines retrieve from the indexed web, so crawlability, page speed, canonical clarity, and genuine topical depth still decide whether your page can be pulled in at all. AEO adds a layer on top of working SEO; it does not substitute for it.

Can a page rank first and still be left out of AI answers?

Yes, and it is common. Ranking rewards relevance and links; retrieval rewards pages that state a checkable answer in a form the model can lift. A long, unstructured page can hold position one and never be quoted.

What do you measure for AEO instead of rankings?

Mention rate (how often you are named), citation rate (how often you are linked as a source), and position within the answer, measured across repeated runs of the same buyer questions on each assistant. A single run is not a measurement.

Which SEO habits hurt AEO?

Keyword-shaped headings that never state an answer, burying the conclusion below a long introduction, gating the substance behind a form, and unsourced claims. Each one makes the page harder to quote with confidence.

Where should a team with good SEO start on AEO?

Take the pages that already rank, add a direct one-paragraph answer at the top, a sourced figure, and a comparison the model can lift, then measure mentions on the questions those pages target. That is the shortest path from existing rankings to citations.

Comparison

AEO vs SEO

SEO earns a link in a list. AEO earns a sentence inside the answer written above that list. Most of the work overlaps; the part that does not is where brands lose.

Updated: September 2026

By Jeremy Unruh, Founder, Monroya · Reviewed September 2026

The one-line difference

SEO asks: can a buyer find a link to us? AEO asks: when the assistant writes the answer and the buyer never opens a link, are we in it? The site is the same. The unit of success is not.

Side by side

Dimension	SEO	AEO
Unit of success	A ranked link	A named mention or cited source
Buyer moment	They search and scan results	They ask and read one answer
Page job	Match the query, earn the click	State the answer, be quotable
Winning shape	Depth, links, topical coverage	Direct answer, table, sourced figure
Metric	Rank, clicks, impressions	Mention rate, citation rate, answer position
Feedback speed	Weeks of rank movement	Repeated runs, compared over time
Failure mode	Page two	Page ranks, answer names a competitor

What carries over, and what does not

Answer engines retrieve from the indexed web. Everything that decides whether your page can be fetched, parsed and trusted still matters, so most of an SEO program is load-bearing for AEO.

Keep doing

Clean crawl paths and canonical clarity
Fast pages that render their content without a click
Real topical depth rather than thin pages per keyword
Third-party mentions and reviews the model can corroborate

Add or change

Answer the question in the first paragraph, not the fifth
Write to the buyer's question, not the keyword string
Give figures a date and a source so they can be quoted
Ungate what you want cited; forms are a wall to a model
Measure mentions and citations, not only rank

Why good rankings do not guarantee mentions

Across 152,606 assistant answers we recorded for 49,069 tracked buyer questions, 56.7% named at least one company, and the 140,492 cited sources came from 41,353 different domains. The answer is assembled from a scattered set of sources rather than the top of one results page, which is why a first-position page can sit unmentioned while a smaller, more quotable page is cited.

Monroya scan data, June 16, 2026 to September 17, 2026. Counted from our own scans across ChatGPT, Claude, Gemini and Perplexity.

Turning ranked pages into cited pages

List the pages that already rank and the buyer question each one really answers.
Put a direct two-sentence answer to that question at the top of the page, before the context.
Add one checkable element the model can lift: a dated figure with a source, or a comparison table.
Run those questions repeatedly on each assistant and record whether you are named, cited, or absent.
Fix the questions where you are absent first. Absence is a bigger gap than a late mention.

For the full discipline behind step three, read the answer engine optimization guide. For where GEO and LLMO fit alongside it, see LLMO vs GEO.

Frequently asked questions about AEO and SEO

What is the difference between AEO and SEO?: SEO optimizes for position in a ranked list of links, and its outcome is a click. AEO (answer engine optimization) optimizes for inclusion in the generated answer an assistant writes above or instead of those links, and its outcome is being named and cited. Same site, different unit of success.
Does AEO replace SEO?: No. Answer engines retrieve from the indexed web, so crawlability, page speed, canonical clarity, and genuine topical depth still decide whether your page can be pulled in at all. AEO adds a layer on top of working SEO; it does not substitute for it.
Can a page rank first and still be left out of AI answers?: Yes, and it is common. Ranking rewards relevance and links; retrieval rewards pages that state a checkable answer in a form the model can lift. A long, unstructured page can hold position one and never be quoted.
What do you measure for AEO instead of rankings?: Mention rate (how often you are named), citation rate (how often you are linked as a source), and position within the answer, measured across repeated runs of the same buyer questions on each assistant. A single run is not a measurement.
Which SEO habits hurt AEO?: Keyword-shaped headings that never state an answer, burying the conclusion below a long introduction, gating the substance behind a form, and unsourced claims. Each one makes the page harder to quote with confidence.
Where should a team with good SEO start on AEO?: Take the pages that already rank, add a direct one-paragraph answer at the top, a sourced figure, and a comparison the model can lift, then measure mentions on the questions those pages target. That is the shortest path from existing rankings to citations.