What is Answer Engine Optimisation (AEO)? A 2026 guide
AEO is how you get your brand cited and recommended inside AI-generated answers. Here is what it is, why it matters now, and how it differs from the SEO you already know.
When someone asks ChatGPT "what is the best AI visibility platform," the answer they get is a recommendation, not a list of ten blue links. Answer Engine Optimisation (AEO) is the practice of making sure your brand is the one named in that answer.
Key takeaway
AEO is the discipline of improving how often, and how favourably, AI engines cite and recommend your brand inside generated answers. It is also called generative engine optimisation (GEO).
Why AEO matters now
Buyers are changing how they discover and decide. Instead of scanning a results page, a growing share now ask an AI assistant directly and act on the single answer it gives. That answer is generated, synthesised from many sources, and it usually names a small handful of brands. If you are not one of them, you are invisible at the exact moment of decision.
This is a structural shift, not a fad. The engines that matter, ChatGPT, Claude, Gemini, Perplexity, Grok and DeepSeek, are becoming the front door to research, comparison and purchase. AEO is how you make sure that front door opens to you.
What AEO actually optimises for
Traditional SEO optimises for position in a ranked list. AEO optimises for three different things:
- Citation. Is your brand mentioned at all when buyers ask the questions that matter in your category?
- Recommendation. When you are mentioned, are you recommended favourably, or described as an also-ran?
- Coverage. Across how many engines and how many high-intent prompts do you appear, versus your competitors?
How to approach AEO
Good AEO is a loop, not a one-off audit. You measure where you stand across engines, find the prompts where rivals are cited and you are not, decide which gaps are worth closing, do the work, and then measure whether your citations actually moved.
Monitoring tells you where you rank today. AEO is about knowing what to do next, and what it is worth.
That last step is where most teams fall down. It is easy to generate a chart of where you stand. It is much harder to know which move will move you, and to prove it did. This is exactly the gap Outercite is built to close: forecasting the uplift of each move before you invest, and measuring the lift after it ships.
Getting started
Start by tracking the buying and comparison prompts that decide your category across the engines your buyers actually use. From there, prioritise the citation gaps your competitors are winning, and treat each fix as a measurable move rather than a guess. AEO rewards teams who run it as a disciplined, evidence-led practice.
