Search changed shape faster than the vocabulary settled.
Once assistants started answering instead of listing, practitioners needed a word for "getting picked as the answer". Several appeared at once: answer engine optimization, generative engine optimization, LLM SEO, AI search optimization. Vendors then attached themselves to whichever label they'd bet on.
US search volume, measured with Google's keyword planner in August 2026, tells you roughly where the market's language is:
| Term | US monthly searches |
|---|---|
| generative engine optimization | 5,400 |
| ai search optimization | 3,600 |
| answer engine optimization | 2,400 |
| geo optimization | 1,300 |
| llm seo | 880 |
| llm optimization | 720 |
Nobody has won the naming yet. Pick the one your team understands and move on — the underlying checklist doesn't change.
An answer engine is doing something narrower than a search engine. It's looking for a passage it can lift, attribute and stand behind. That imposes real constraints.
One question per passage. A section that answers exactly one question is quotable. A section that covers five is not.
Conclusion before reasoning. Snippet extraction takes the top of a section. If your answer arrives in the fourth paragraph, the first three are what gets read.
Self-contained sentences. "As mentioned above, it's usually the second option" is unusable out of context. Answers get lifted away from their neighbours.
Text, not pictures. This remains the most common blocker we see in scans of small ecommerce sites: the ingredient list, the sizing guidance, the "who this is for" — all of it inside a JPEG. A model reading the page sees a headline and a buy button.
Something to corroborate it. Assistants weigh what other sources say about you. A claim only you make is a claim, not evidence.
The AEO pass on one page
They overlap more than the marketing suggests. Both want crawlable pages, clear structure and credible sources. Two differences matter.
Ranking versus being named. SEO competes for a position in a list. AEO competes to be the sentence. There's no second page in an answer, and often no third brand. The distribution is winner-takes-most.
Clicks versus mentions. A user can read an answer that names you without visiting. That breaks the measurement habits SEO built — you'll see fewer clicks per unit of visibility, and your analytics won't show the impression at all. Track mentions on a fixed question set, not just sessions.
That second point is why measurement here has to be deliberate. If you don't write down the questions before you start, you have no baseline to compare against later.
Notice that none of those steps requires choosing between AEO, GEO and SEO. That's the point.
Q. What is answer engine optimization?
It's structuring content so an answer engine — ChatGPT, Perplexity, Google's AI Overviews — can lift a direct answer from your page and attribute it to you. In practice: one question per section, conclusion first, self-contained sentences, real text instead of images.
Q. Is AEO different from GEO?
Barely. GEO usually refers to generative systems specifically, AEO to any direct-answer surface including featured snippets. The work overlaps almost completely, and most vendors use them interchangeably.
Q. Does AEO replace SEO?
No. Answer engines mostly draw from pages that conventional crawlers can already access. Broken indexing, blocked crawlers and thin pages hurt both. AEO is a layer on top, not a replacement.
Q. How do I measure AEO results?
Fix a question set, record how often you're named per model before you change anything, publish, then re-ask the identical questions. Mention rate on a fixed question set is the honest metric — traffic alone will understate the effect.
Originally published at en.bultibulti.com. We run a free GEO audit there — it checks one of your pages against 30 buyer questions, no signup.