What is GEO, and how is it different from SEO?

A practice owner told me his agency had him on a twelve-month SEO plan and he was finally ranking third for his main service. Then his daughter asked ChatGPT who she should see, and it named three practices, none of them his. Both things were true at the same time, and that is the part worth understanding.

What the letters actually stand for

GEO is generative engine optimization: the work of being named, described correctly and quoted inside an answer that an assistant writes. The term comes from a 2024 research paper that tested which content changes moved citation rates. It is not a rebrand of SEO, and it is not a product you buy.

You will also see AEO, answer engine optimization, and AI SEO used for roughly the same thing. The split between GEO and AEO is useful, so it gets its own section below. What matters more is the change underneath both: the thing a person reads is no longer a list you can hold a position in. It is a paragraph somebody else wrote about you.

Where the two jobs diverge

Search asks which pages deserve to rank. An assistant asks a different question: which sources can I safely repeat. That second question rewards things a ranking never measured, like whether your details agree across independent sites, and whether a paragraph on your page can be lifted without the rest of the page around it.

GEO vs AEO: is there a difference?

Yes, in emphasis. AEO, answer engine optimization, makes a page the clearest direct answer to one question, like "what does an AI implementation consultant do?" GEO works on whether a business becomes one of the credible sources an assistant combines into a longer answer, like "compare ways to bring AI into a small business." Most of the work serves both.

The boundary is not agreed. Some people keep AEO for featured snippets and voice answers, others use both words for the same job. Treat them as two checks on the same page: does it answer the question plainly, and does it give an assistant a reason to trust you and name you.

How much does ranking carry over?

Less than you would hope. Ahrefs asked four assistants 15,000 long-tail questions and compared what they cited against Google and Bing. About 12% of cited URLs also ranked in Google’s top ten, and for ChatGPT the URL-level overlap was 8%. That is a vendor study rather than peer-reviewed work, and the direction matches what practices report.

Read it as overlap, not replacement. Ranking still brings people who search, and it feeds the indexes several assistants read from. It simply does not settle the other question, which is whether a model will put your name in a sentence.

What the evidence says actually moves a citation

The strongest study on this tested content changes across roughly 10,000 queries and found that adding real statistics, direct quotations and cited authoritative sources raised visibility in generative answers by roughly 30 to 40%. Keyword stuffing produced nothing measurable. That is one finding, and it is the most useful instruction available.

In practice that means writing the number you actually have, saying where it came from, dating it, and quoting the person who said it. A page that reads like a brochure gives a model nothing to lift. A page that says "we place 40 implants a year, here is our five-year failure rate, measured this way" gives it a sentence it can repeat and attribute.

What changes when the assistant can act

An agent does not stop at the answer. In August 2025 Google began testing AI Mode finding restaurant reservations for US subscribers to its top AI plan, using live browsing, Google Maps and booking partners, and named local service appointments as the next step. When an assistant moves toward a booking, being named is only the first step.

Google’s own guidance keeps this practical. Its Search Central page on AI features says there are no extra requirements to appear in AI Overviews or AI Mode: no AI text files, no special schema.org markup. It asks for the ordinary things done well, including content in text, structured data that matches what the page shows, and a Business Profile that is up to date.

So the job has three parts. Answer real questions plainly. Show evidence that you know what you are talking about. And keep the facts a booking depends on accurate everywhere an assistant looks, on your site, your Google Business Profile and your booking tool: your services, your hours, your prices where you publish them, and how to book. Google has not published what qualifies a business, so treat this as the safe base, not a guarantee. Put simply, help AI find your business, understand why you are a good fit, and help the customer take the next step.

Who should not start here

If your site cannot be crawled, or is not indexed in Bing and Google, none of this applies yet, and no amount of writing will fix it. If your name, address and credentials disagree across your listings, fix that first: it is cheaper than content and it moves answers faster. And if you are hoping for clicks rather than mentions, be honest about the trade. Many of these answers end without anyone visiting a website at all.