What is AEO? Answer engine optimisation, in plain English
Your buyers have stopped collecting links. They ask ChatGPT, Claude, Perplexity or Gemini a question and get one written answer that names one or two businesses. AEO is the work of being one of those names.
Why this needed a new name
A Google results page shows ten links, and a decent site somewhere in that list still gets seen. An AI answer compresses the whole web into a paragraph. There is no page two. There is not even a list. The engine picks its shortlist for the user, and every business it does not name is invisible.
That compression changes the job. You are no longer optimising to rank among many. You are optimising to be chosen, once, by a machine that reads fast and quotes what it trusts.
How AI engines choose who to name
Every engine differs in detail, but the shortlist comes from three places:
- What the engine can read right now. ChatGPT, Claude, Perplexity and Copilot fetch live pages when they answer. If your site blocks their crawlers, loads slowly, or buries the point, you lose before the question is even asked. This is the most common silent failure. We have seen firewalls block every AI crawler by default, on our own site included.
- What other sources say about you. Engines lean heavily on third-party evidence: comparison articles, directories, reviews, forum threads. If the pages an engine cites never mention you, you are not in the answer.
- What the model already remembers. Models carry knowledge from training. Established names get recommended from memory. New brands have to win through the first two routes, which is good news: those two you can act on this quarter.
The five levers of AEO
- Crawl access. Let AI bots in: robots.txt, firewall rules and bot protection tuned so GPTBot, ClaudeBot, PerplexityBot and friends get a 200, not a 403.
- Structured facts. Schema.org markup (Organization, Service, FAQ), an llms.txt file, consistent name, offer and pricing everywhere. Machines trust what is stated cleanly and repeated consistently.
- Quotable answers. Pages that answer real buyer questions in two crisp sentences an engine can lift verbatim. Definitions, comparisons, checklists. Fluff cannot be quoted.
- Citations and mentions. Get named in the sources engines actually cite in your space: roundups, directories, reviews, communities. This is the slowest lever and the strongest one.
- Measurement. Ask the engines your buyers' questions on a schedule and count who gets named. Visibility you do not measure will quietly stay at zero.
What the data says
- 85% of AI citations point at third-party sources, not the brand's own site, which is why mentions and PR are the strongest lever (Virayo LLM SEO analysis, 2026).
- Adding expert quotes lifts AI visibility by roughly 41%, statistics by about 30% (the Princeton GEO study).
- Engines barely overlap. Across 680 million citations, only 11% of domains were cited by both ChatGPT and Perplexity, so each engine needs its own plan (2026 per-engine audit).
- Freshness counts. For commercial queries, 83% of AI citations came from pages updated in the last 12 months (AI Rank Lab, 2026).
AEO, GEO, AI SEO: same job, different names
You will see the same discipline called AEO (answer engine optimisation), GEO (generative engine optimisation), AI SEO or LLM SEO. The names differ, the work does not: be readable, be quotable, be cited, be measured. AEO is the outcome you want; GEO is the content craft that gets you there.
Questions, answered
What does AEO stand for?
AEO stands for answer engine optimisation. It is the practice of making your business the answer AI engines such as ChatGPT, Claude, Perplexity and Gemini give when buyers ask who to use. The same work is sometimes called GEO (generative engine optimisation) or AI SEO.
Is AEO different from SEO?
Yes. SEO competes for positions on a results page with ten or more links. AEO competes for a place inside a single written answer that names one or two businesses. The foundations overlap, but AEO adds crawl access for AI bots, quotable positioning, structured facts and third-party mentions in the sources engines cite.
How do I know if I show up in AI search?
Test it. Ask the engines the questions your buyers ask and count who gets named, or run a free AI visibility audit at showuplabs.com, which does exactly that against a live engine and scores you out of 100 in about a minute.
How long does AEO take to work?
Technical fixes such as unblocking AI crawlers, adding schema and publishing quotable answers take effect as soon as engines re-read your site, typically days to weeks for retrieval-based answers. Building the third-party citations that shift what models say from memory takes months. Measure monthly and treat it as compounding work.
Ready to act on this? How to improve your AI search visibility is the step-by-step version.
To see where you currently stand, the AI visibility checker explains what a real check measures and runs it free.
Find out if AI recommends you
Free score in about a minute. You see how often AI names you, who it names instead, and the top fixes. We run the same audit on ourselves and publish it, live, warts and all.