What is generative engine optimization in simple terms?

Generative engine optimization (GEO) is the work of making your business easy for AI assistants like ChatGPT, Gemini, Perplexity and Claude to find, understand and name when a buyer asks a question. The goal is to be one of the businesses the answer recommends, described accurately.

How is GEO different from SEO?

SEO earns your pages a ranking in the list of search results. GEO earns your business a mention inside the answer an AI assistant writes. They share the same foundations, such as a technically sound site, clear pages and credible mentions, so the strongest results come from running both as one plan.

How do I know if ChatGPT recommends my business?

Ask it the questions your buyers ask, such as the best provider of your service in your city, and note who gets named. Repeat the test in Perplexity, Gemini and Claude. SET runs this as a structured baseline of 50 buyer questions and repeats it so you can see change over time.

Can anyone guarantee that AI will name my business?

No. The AI companies decide how their assistants choose sources, and they change those systems often. What can be controlled is how clear, consistent, credible and current your business looks to them, and whether the enquiries they send you are tracked.

How long does GEO take to work?

It depends on where you start: how strong your search foundations are, how consistent your business information is and how much has been written about you. We measure a baseline first, then re-run the same questions on a schedule so you see what has moved.

What Is Generative Engine Optimization?

Q: Which AI tools does GEO cover?

The assistants buyers use to research a purchase: ChatGPT, Google AI Overviews and AI Mode, Gemini, Perplexity, Microsoft Copilot and Claude. Each one gathers and weighs sources differently, so we measure them separately.

Key takeaways

Generative engine optimization (GEO) is the work of getting your business found, trusted and named inside answers written by AI assistants such as ChatGPT, Gemini, Perplexity and Claude.
AI answers keep buyers on the results page. Pew Research Center found people clicked a regular search result on 8% of visits when Google showed an AI summary, compared with 15% when it did not.
The research that named GEO found that adding sources, quotations and statistics to content raised its visibility in AI answers by up to 40% (Aggarwal et al., KDD 2024).
GEO builds on SEO. The businesses AI names tend to be the ones with strong search foundations, consistent facts and credible mentions across the web.

What is generative engine optimization?

A generative engine is an AI tool that writes an answer instead of handing you a list of links. ChatGPT, Google's AI Overviews and AI Mode, Gemini, Perplexity, Microsoft Copilot and Claude all work this way. Ask one of them for the best commercial roofer in Toronto or a fractional CMO in Miami, and it reads what it can find, then gives you a short answer with a few businesses named.

Generative engine optimization, or GEO, is the practice of improving how often your business appears in those answers and how accurately it is described. The term comes from a 2023 research paper by researchers at Princeton University and IIT Delhi, later published at KDD 2024, one of the main academic conferences on data science (read the paper).

Why GEO matters for your business now

Search behaviour is moving from typing keywords to asking questions, and the answer increasingly arrives before anyone visits a website.

Buyers are asking AI. OpenAI said in early 2026 that ChatGPT had reached 900 million weekly users (ITdaily, March 2026).
AI summaries reduce clicks. In Pew's study of real browsing data, a link inside the AI summary itself was clicked on just 1% of visits (Pew Research Center, July 2025).
Top rankings earn less traffic. Ahrefs found the number one result earned a 34.5% lower click-through rate on searches that showed an AI Overview, based on 300,000 keywords (Ahrefs, April 2025).
Analysts expected the shift. In February 2024, Gartner predicted traditional search engine volume would drop 25% by 2026 as people turn to AI chatbots and virtual agents (Gartner).

The practical effect: a buyer's shortlist is now often formed inside the answer. If your business is missing from it, you can rank well and still never be considered.

GEO, SEO and AEO: how they fit together

SEO (search engine optimization)

Earns your pages a place in the list of results on Google and Bing. It is still the foundation, because many AI assistants search the web before they answer.

AEO (answer engine optimization)

Wins the direct-answer spots: featured snippets, voice answers and Google's AI Overviews.

GEO (generative engine optimization)

Gets your business named and described correctly inside answers written by ChatGPT, Gemini, Perplexity, Copilot and Claude.

All three reward the same things: a technically sound site, pages that answer real questions and a reputation other sources confirm. We run them as one system. For the step-by-step version, read how to get cited by ChatGPT and Perplexity.

How AI assistants decide which businesses to name

No one outside the AI companies knows the exact rules, and they change often. What is visible is the pattern in the answers. For questions about local services, most assistants run a live web search, read the pages that come back and summarize them, so being findable in Google and Bing still matters. Then they tend to favour businesses that are:

Clear. Pages that answer a specific question in plain language, near the top of the page.
Consistent. The same name, address, services and leadership everywhere your business appears.
Corroborated. Reviews, directory listings, press coverage, industry lists and partner pages that confirm what your own site says.
Structured. Schema markup that tells machines exactly who you are, what you do and where.
Current. Dated, recently updated pages with figures and sources.

What the research says works

The GEO study tested nine ways of rewriting web content across a benchmark of 10,000 search queries, then measured how visible each source was in the AI-generated answers (Aggarwal et al.). Three findings matter for a business:

Evidence beats volume. Citing sources, adding quotations from credible people and adding statistics performed best, raising visibility by up to 40%. In a test on Perplexity, the gains reached 37%.
Keyword stuffing did not help. The tactics that once gamed search rankings did little for AI answers.
Smaller players gained the most. When lower-ranked sources cited their evidence, their visibility rose sharply, while the top-ranked source lost ground. GEO gives a well-run mid-sized business a real chance to be named next to larger competitors.

One caveat: the study measured how much of each answer a source shaped. It did not measure clicks or sales, which is why we track leads as well as mentions.

GEO best practices: a working checklist

Answer the questions your buyers actually ask. Put the question in a heading and answer it in the first two sentences under it.
Back every claim. Use numbers, named sources and quotes from people who can be checked.
Make your facts match everywhere. Your website, Google Business Profile, LinkedIn and directories should say the same thing, word for word.
Earn credible mentions. Reviews, industry associations, local press and partner pages give AI a second source to trust.
Add structured data. Organization, LocalBusiness, Person and FAQ schema remove guesswork for machines.
Let AI crawlers in. Check that your robots.txt file and firewall are not blocking the crawlers AI assistants use to read your site.
Keep pages current. Date your content, update it and remove what is out of date.
Measure. Ask the major assistants your buyers' questions on a schedule and record who gets named, then connect AI-referred enquiries to your CRM.

The limits of GEO

GEO is worth doing, and it helps to know what it can and cannot do before you invest.

No one controls the answer. Results vary by how the question is worded, where the buyer is and which model version is running.
AI can get you wrong. Assistants sometimes merge businesses, quote old information or misstate what you offer. Monitoring catches this so it can be corrected at the source.
Mentions are a means. Being named only matters if it turns into enquiries, which is why tracking belongs in the plan from day one.

How SET Marketing approaches GEO

SET Marketing is a strategy, marketing and market expansion firm in Toronto and Miami. Our AI search visibility service treats GEO as part of your growth plan, led by a senior marketer, and measured on revenue.

Measure. We put the 50 questions your buyers ask to ChatGPT, Perplexity, Gemini and Claude and record who gets named, who doesn't and what AI gets wrong about you, alongside a full SEO audit.
Fix. We correct your Google Business Profile, add structured data, rebuild key pages so AI tools can quote them and make your facts consistent across the web.
Connect. Every enquiry that comes from an AI assistant is tagged in your SET OS CRM and followed through to booked work and collected revenue.
Track. We re-run the same questions on a schedule, so you see what moved and what it produced.

We will not promise placements no one controls. We will show you where you stand, what we would fix first and how every AI-referred lead is counted.