AEO vs GEO vs SEO: What Is the Difference in 2026?

What is SEO, in one sentence?

Search engine optimisation is the work of making a website crawlable, relevant and trusted so it ranks in the organic results of Google and Bing. It covers technical health, content that matches search intent, internal linking and backlinks. Everything else in this article sits on top of it: if a crawler cannot reach or understand your page, no answer engine or AI model will quote it either.

What is AEO (answer engine optimisation)?

AEO is the practice of shaping content so a search engine can lift one passage and show it as the answer. That passage appears in featured snippets, People Also Ask boxes, voice assistants and Google AI Overviews. The unit of AEO is the answer block: a question as a heading, followed by a self-contained 40 to 60 word reply that makes sense with no surrounding context.

• Lead with the answer, then explain. Never bury it after an introduction.
• Use question-style H2s that match how people actually ask.
• Add FAQPage, HowTo or Article schema so the structure is machine readable.
• Use tables and numbered steps, which are easy to extract.

You can score any answer against these rules with our free AEO Answer Grader.

What is GEO (generative engine optimisation)?

GEO is the practice of making a brand visible inside the responses of large language model assistants. When someone asks ChatGPT for “the best dental clinic in Toronto” or “a reliable Shopify agency in the UK”, the model assembles an answer from its training data and from live retrieval. GEO increases the odds that your brand is in that answer, described accurately and linked as a source.

GEO is broader than a single page. It depends on:

1. Access: AI crawlers such as OAI-SearchBot, PerplexityBot and ClaudeBot are allowed in robots.txt. Check yours with the AI Crawler Checker.
2. Entity clarity: one consistent name, description, location and offer everywhere, backed by Organization schema and sameAs links.
3. Corroboration: independent mentions on directories, review sites, news and community threads that models trust.
4. Extractable facts: specific numbers, comparisons and definitions that a model can quote safely.

How do SEO, AEO and GEO compare?

Which one should you start with?

Start with SEO hygiene, because both AEO and GEO inherit its problems. A practical sequence we use for clients in the USA, UK, Canada, Australia and India:

1. Weeks 1 to 2: technical audit, fix indexation, speed and internal links. Run a quick check with the AI Visibility Checker.
2. Weeks 2 to 6: rewrite money pages and top blog posts into answer-first format with FAQ schema.
3. Month 2 onward: GEO work, which means entity cleanup, an llms.txt file, digital PR and review velocity.
4. Every month: test 20 to 30 buyer prompts across assistants and log which brands are mentioned.

How do you measure AEO and GEO?

Classic rank trackers do not show AI answers, so add three measurements. First, track AI referral traffic in GA4 by filtering sessions from chatgpt.com, perplexity.ai, gemini.google.com and copilot.microsoft.com. Second, keep a prompt log: the same set of buyer questions, asked monthly, recording whether you are named and which sources are cited. Third, monitor featured snippet and AI Overview ownership for your priority keywords.

Our view: GEO is not a trick. It rewards brands that are easy to understand and widely vouched for. That is good marketing anyway.

Need help with all three?

Our AI SEO and GEO service combines technical SEO, answer-first content and AI visibility tracking in one retainer, delivered by specialists who do only search. Book a free audit call and we will show you where you stand in AI answers today.

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