AEO vs SEO: what actually changes when AI answers
Both fight for the same buyer. The difference is what winning looks like: a position on a page of links, or a mention inside the one answer the buyer reads.
Side by side
| SEO | AEO | |
|---|---|---|
| The prize | A position in ten or more links | A mention in one written answer |
| Who decides | A ranking algorithm | A language model choosing what to say |
| The unit of content | The page | The quotable passage: a definition, a comparison, a number |
| Off-page signal | Backlinks | Mentions in the sources engines cite: roundups, directories, reviews, communities |
| Technical gate | Googlebot can crawl and index | AI crawlers get a 200: GPTBot, ClaudeBot, PerplexityBot, and live fetchers like ChatGPT-User |
| Failure mode | Page 2, seen by almost no one | Not named at all, seen by literally no one |
| How you measure | Rankings and clicks | Mention rate and share of voice across real buyer questions |
What stays the same
The foundations carry over. Fast, crawlable pages. Clear positioning. Real expertise. Content that answers questions people actually ask. If your SEO is genuinely good, you are perhaps sixty percent of the way to AEO. That is the good news.
What changes
- A new set of gatekeepers. Googlebot getting in means nothing if GPTBot and ClaudeBot get a 403. Firewalls and bot protection commonly block AI crawlers by default, silently. Ranking #3 on Google while being invisible to every AI engine is normal, and most owners have no idea.
- Quotability beats keywords. Engines lift the cleanest two sentences that answer the question. Pages stuffed with keywords but empty of statements give a model nothing to quote.
- Third-party proof outweighs your own site. An engine asked "who is the best X" reads comparisons and communities, not just your homepage. If those sources never mention you, your beautiful site loses to a competitor with three good citations.
- You measure answers, not rankings. There is no rank tracker for a paragraph. You ask the engines real buyer questions on a schedule and count who gets named. That number is the new ranking.
So which do you invest in?
Wrong question, honestly. AI answers are where buying decisions increasingly start, but Google still carries the volume. The efficient move is one system: fix crawl access for every bot, publish quotable answers that also rank, earn mentions that double as backlinks, and measure both sides. Every hour of AEO work reinforces SEO. Almost none of it is wasted twice.
New to the AEO side? Start with What is AEO?, then run the 12-point checklist on your own site.
See both sides of your visibility
The free audit asks a live AI engine your buyers' questions and scores you out of 100: how often you appear, who gets named instead, and the fixes in priority order.