SEO vs AEO — What's the Difference?
June 7, 2026 · SeenandCited
Search Engine Optimization (SEO) and Answer Engine Optimization (AEO) are related but distinct disciplines. SEO is about ranking on a search results page. AEO is about being chosen as the source an AI assistant quotes in its direct answer.
In SEO, success looks like position one on Google. In AEO, success looks like a citation in a ChatGPT, Perplexity, Gemini, or Claude response. The user may never visit the search results page at all — the AI answers their question directly and names your site as the source.
Key differences
SEO rewards pages that satisfy search intent and earn backlinks. AEO rewards pages that are precise, well-structured, and demonstrably authoritative on a narrow topic. SEO is about traffic volume; AEO is about being the trusted voice at the exact moment of decision.
Both disciplines value quality content, but AEO places extra weight on clarity, attribution, and structured signals like llms.txt that help AI assistants understand what your page is about before they commit to citing it.
Can you do both?
Absolutely. The best AEO content is also strong SEO content. The difference is in the optimization target: search engine crawlers versus AI reasoning engines. Optimizing for both means writing for humans first, then ensuring machines — whether crawlers or assistants — can easily recognize and trust your expertise.