AEO
Also called: answer engine optimization, answer engine optimisation, AI search optimization
Definition
AEO (answer engine optimization) is the practice of getting your brand mentioned and your pages cited in AI-generated answers from tools like ChatGPT, Perplexity, Gemini and Google's AI Overviews and AI Mode.
AEO stands for answer engine optimization. The "answer engine" is any tool that replies with a written answer instead of a list of links: ChatGPT search, Perplexity, Gemini, Google's AI Overviews and AI Mode. AEO is the work of making sure your brand is in those answers, ideally named and linked.
The term overlaps almost completely with GEO (generative engine optimization). Pick either; the work is the same.
How it works
Most answer engines use retrieval-augmented generation: they run one or more searches, pull candidate pages, and write an answer that cites some of them. Google calls the multi-search step "query fan-out". Two consequences follow:
- You have to be retrievable. If a page is not in the index the engine searches, it cannot be cited. Classic SEO is the base layer.
- Being retrieved is not being cited. Peec AI's February 2026 study found that on Perplexity, 64% of retrieved URLs were never cited in the answer.
Your brand can also appear without your site being cited at all, because the answer leans on a review site, a YouTube video or a Reddit thread that mentions you. A lot of AI visibility is won or lost there.
What Google says about it
Google's May 2026 guide addresses AEO and GEO directly: from Google's view, optimizing for generative AI search is still SEO. It lists things you can ignore for Google, including llms.txt files, chunking content into tiny pieces, rewriting content for AI and seeking inauthentic mentions. It recommends unique, non-commodity content, a clean technical setup and Search Console's generative AI performance report for measurement.
Other engines publish less, which is why most AEO work leans on measurement: run the prompts your buyers would ask, record who gets named and cited, repeat.
How it plays out on Reddit
Reddit is the most-cited domain in AI search across ChatGPT, Google AI Mode, Gemini, Perplexity and AI Overviews (Peec AI, US data, March 2026). Google and OpenAI both signed deals for Reddit's Data API in 2024. In practice, when someone asks an AI tool "what's the best tool for X", the answer often leans on a Reddit thread where people compared options.
That makes Reddit one of the few AEO levers you can act on directly: find the threads that get cited for your category and add an honest, useful answer. BoomReddit flags threads that already rank on Google or get cited in AI answers so you can prioritise those. More in the Reddit SEO and AI search guide.
Common mistakes
- Buying "AEO hacks". Google says special files and markup do not affect its AI features.
- Planting fake mentions. Google calls inauthentic mentions less helpful than they seem, and on Reddit it is astroturfing, which gets accounts banned.
- Measuring once. AI answers vary run to run. Track the same prompts over weeks.
Frequently asked questions
What is the difference between AEO and SEO?
SEO targets rankings in a list of results; AEO targets inclusion in a written answer. The inputs overlap heavily, which is why Google treats them as the same work.
Is AEO the same as GEO?
In practice, yes. Both describe getting cited or mentioned in AI-generated answers, and the terms are used interchangeably.
How do I measure AEO?
Track a fixed set of buyer prompts across engines and record mentions and citations. Google Search Console and Bing Webmaster Tools now both report AI feature visibility for your own pages.