GEO vs SEO vs AEO: What’s the Difference (and Which Do You Need?)

GEO vs SEO comes down to where you want to appear. SEO (search engine optimization) aims to rank your pages in traditional search results; GEO (generative engine optimization) aims to get your business mentioned and cited inside AI-written answers; AEO (answer engine optimization) focuses on being the direct answer to a question. They share the same foundations, and most businesses need a bit of all three.

What is the quick difference between GEO, SEO and AEO?

What is SEO?

SEO is the long-established practice of helping search engines crawl, index and rank your pages. Success is a high position for relevant searches and the clicks that follow. It covers technical health, useful content, internal linking, local profiles and links from other sites.

What is answer engine optimization (AEO)?

Answer engine optimization grew up around featured snippets and voice assistants: systems that return one answer rather than a list. AEO tactics include question-style headings, a clear two or three sentence answer near the top of a page, and FAQ sections. Today many people use “AEO” to include AI assistants too, so the line between AEO and GEO is blurry.

What is GEO?

Generative engine optimization was named in a 2023 research paper by Aggarwal and colleagues (Princeton and others), and interest grew very fast in 2025 and 2026. GEO targets engines that search the web, read several pages and write a combined answer, often with citations. Success means your business is named in that answer, described correctly and backed by sources. Our complete GEO guide covers it in depth.

What about “LLM SEO” and “AI SEO”?

LLM SEO and AI SEO are other names for roughly the same work as GEO: improving visibility in tools built on large language models. You will see all of these terms used interchangeably by agencies and software vendors. Don’t get stuck on labels. Ask instead: “Where do my customers look for answers, and do I show up there?”

Where do SEO, AEO and GEO overlap?

Much more than the hype suggests. SEO foundations still matter for AI search, for several concrete reasons:

• Google’s AI features run on Google Search. Google says there are no special requirements for AI Overviews or AI Mode beyond normal Search eligibility: your page has to be indexed and eligible for a snippet. The same SEO fundamentals apply. See Google AI Overviews and AI Mode optimization.
• Copilot draws on Bing. Bingbot powers Bing and Microsoft Copilot, so Bing indexing and Bing Places matter.
• Crawlability is shared. If a page cannot be crawled, it can’t rank, be quoted as an answer or be cited by an AI engine.
• Clear content wins everywhere. Direct answers, specific facts and good structure help a page rank, win a snippet and get quoted by an AI assistant.
• Structured data helps all three. Organization, LocalBusiness, Service and FAQPage markup help machines read your facts, as long as the markup matches what is visible on the page.

If your site is slow, thin, hard to crawl or inconsistent about basic facts, fix that first. It will help every channel at once.

Where do GEO and SEO differ?

The unit of success

SEO measures pages: which URL ranks for which keyword. GEO measures your brand: whether you are named, how you are described and which sources support the answer. A business can be mentioned in an AI answer even when the cited source is a directory or a “best of” article rather than its own site.

The role of other websites

Links matter in SEO, but GEO leans heavily on what third-party pages say about you. When an assistant recommends “the best accountants in London”, it often draws on lists, reviews and directories. If competitors appear there and you don’t, your own site can’t fully make up for it. See AI citation sources and which websites ChatGPT cites.

Entity clarity

SEO can work with keyword relevance alone. GEO depends more on the engine understanding your business as one clear entity: its name, type, location, services and contact details, consistent across your website, Google Business Profile, Bing Places, Apple Business Connect and directories. More in entity SEO for AI search.

Different crawlers

Traditional SEO mostly cares about Googlebot and Bingbot. GEO adds AI search crawlers such as OAI-SearchBot (ChatGPT search), Claude-SearchBot and PerplexityBot. Blocking training crawlers like GPTBot or ClaudeBot does not remove you from AI search answers, but blocking the search crawlers does. Check yours with this robots.txt guide.

Measurement

Rankings are relatively stable and visible in tools like Search Console. AI answers vary by engine, wording, location, time and personalisation, and API answers can differ from the consumer app. So GEO measurement means running a fixed set of questions repeatedly and looking at rates and trends: mention rate, share of voice and citations. See how to track brand mentions.

Which should a small business prioritise?

For a dental clinic in Austin, a law firm in Dubai or a café in Sydney, the order is fairly clear:

1. Get the SEO basics right. Indexable pages, a clear page per service and location, accurate Google Business Profile and Bing Places listings.
2. Make your facts consistent. Same name, address, phone and hours everywhere, plus LocalBusiness schema that matches the page.
3. Answer real questions. Add direct answers and a short FAQ to key pages (see writing FAQs AI assistants quote).
4. Allow AI search crawlers. A one-time check that pays off across every engine.
5. Get listed where AI looks. Relevant directories, review platforms and local roundups.
6. Check a handful of questions monthly. “Best [service] in [city]” and “What is [your business]?” are a good start.

You don’t need separate SEO, AEO and GEO projects. One practical checklist covers all three: try the AI SEO checklist for small businesses and local AI visibility guide.

Which should an agency prioritise?

Agencies usually already deliver SEO. The opportunity is adding a GEO layer that clients can see and understand:

• Baseline reporting. For each client, define a prompt set based on real customer questions, record mentions, competitors and cited sources, and repeat on a schedule.
• Entity and schema audits. Check facts across the site and profiles; fix conflicts and add connected schema.org markup.
• Citation gap work. Identify pages AI engines cite where competitors appear and the client does not, then pursue listings and mentions.
• Accuracy monitoring. Catch wrong phone numbers, websites or descriptions in AI answers (see AI reputation management).
• Honest expectations. Never promise rankings or mentions in AI answers. Promise a clear process and transparent measurement.

How Onxeera helps

Onxeera is built for the GEO side of this work, on top of your existing SEO. The free AI Crawler Checker and AI Schema Generator cover the shared foundations, Prompt Research asks ChatGPT, Perplexity, Gemini and Claude your customers’ questions and records mentions and cited sources, and Citation Builder shows citation gaps. The Agency plan ($99/mo) includes automatic weekly tracking of 80 prompts, and there is a free plan to start; see pricing.

Frequently asked questions

Is SEO dead because of AI search?

No. Google's AI Overviews and AI Mode rely on the normal Google index, Copilot draws on Bing, and every AI engine that searches the web needs pages it can crawl and understand. SEO is still the foundation. What has changed is that ranking alone no longer shows the full picture of how customers find you.

Should I hire separate specialists for SEO and GEO?

Usually not at first. The same person or agency can handle both, because most of the work overlaps: crawlability, clear content, structured data and consistent business facts. GEO adds prompt tracking, citation gap work and accuracy checks, which a good SEO provider can learn and report on.

Does AEO still matter if featured snippets are less common?

Yes, because the habits behind AEO carry over. Direct answers near the top of a page, question-style headings and clear FAQs make content easier for any system to quote, whether that is a snippet, a voice assistant or an AI assistant writing a combined answer.

Which is faster to improve, SEO or GEO?

Neither has a fixed timeline. Some GEO fixes, such as unblocking AI search crawlers or correcting facts on your profiles, are quick to make but still depend on engines re-reading your pages. Earning third-party mentions and rankings both take steady work over months.