Generative engine optimization (GEO): meaning, how it works, strategies and tools · Citable

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written for teams no score out of 100 no ten-step checklist written for teams no score out of 100 no ten-step checklist written for teams no score out of 100 no ten-step checklist

What is generative engine optimization (GEO)?

Generative engine optimization (GEO) is the practice of making a website more likely to be read, used and cited when an AI engine — ChatGPT, Perplexity, Gemini, Copilot, Google’s AI Overviews — writes an answer. Search engine optimization earns a place in a list of links. GEO earns a place inside the answer itself, as one of the few sources it names.

The term comes from a 2023 research paper, GEO: Generative Engine Optimization , first published in November 2023 by researchers at Princeton and IIT Delhi and their collaborators. They built a benchmark of questions, changed source pages in different ways, and measured which changes made a page more visible in the generated answer.

How does a generative engine choose its sources?

Every engine does the same four things, in this order. A site can lose at any one of them.

It fetches. Its crawlers ask your server for pages — some ahead of time, to build an index, and some at the moment a person asks. A crawler your robots.txt or your CDN refuses reads nothing. The names are in the AI crawler list .

It reads what it was given. Most AI crawlers take the HTML and do not run the scripts in it. Facts drawn by JavaScript are not there. See can ChatGPT read my website?

It weighs. Between pages that say the same thing, it prefers the one that is specific, attributable and consistent with what is said elsewhere.

It writes, and cites. A handful of sources make it into the answer. The rest were read and left out.

GEO strategies that have evidence behind them

The original paper is still the clearest test. In its benchmark, three changes raised a source’s visibility the most — by roughly 30 to 40% — and none of them is keyword repetition:

Add statistics. A number with a unit and a date gives the engine something exact to use.

Add quotations. A named person saying something specific is attributable, and attribution is what an answer engine trades in.

Cite your sources. A page that shows where its facts came from is treated as more reliable than one that asserts them.

Keyword stuffing, in the same tests, made little to no difference. The paper also found that what works varies by subject — so treat these as the strongest general findings, not a formula. Beyond the paper, four practices follow directly from how the engines read:

Answer first. The question as a heading, the answer in the sentence under it. An engine lifts the part it can use; make that part the top.

Put facts in text. Prices, limits, availability, policies — in the HTML, not in a widget, an image or a PDF.

Be the original. Your own data, your own terms, your own measurements. A summary of other pages loses the citation to those pages.

Be one thing. The same name and the same description of what you do, on your site, in your structured data and on other sites that mention you.

GEO vs SEO: what changes and what does not

SEO GEO

The goal A position in a list of links A place among the sources of an answer

The reader Googlebot, which runs JavaScript AI crawlers, most of which do not

What is rewarded Relevance and authority for a query A specific, attributable statement that can be quoted

What losing looks like Page two Absent — there is no page two

How it is measured Rankings, clicks, impressions Crawler reads, citations, visits from answers

Most of SEO carries over: a fast, crawlable, trusted site is ahead in both. GEO does not replace it. What it adds is a second audience that reads differently — and a site can be excellent for one and nearly blank for the other. How the acronyms relate is in GEO vs AEO vs AIO vs LLMO , and the answer-shaped half of the work in answer engine optimization .

Generative engine optimization tools: what they actually do

Tools sold as GEO tools do one of three jobs, and it helps to know which before buying.

Trackers ask AI engines a set of questions on a schedule and report whether your brand was mentioned. They tell you the result. They do not change it.

Content tools score or rewrite a page against a checklist — headings, questions, schema. Useful for the writing; blind to whether a crawler was ever handed the page.

Delivery changes what an AI crawler is given when it asks for your page. This is what Citable does: the crawler gets the content alone — the same facts, at the same address — and people and Google get the page as it is.

They are not rivals; they answer different questions. A tracker with nothing behind it is a thermometer. How we compare with each kind is under versus the alternatives .

GEO services and agencies: what to ask

“What will you change on my site?” If the answer is only reports, you are buying measurement.

“What can you not promise?” The honest answer is the citation itself. The choice is the model’s.

“How will I see it worked?” Look for crawler reads and visits from answers — numbers you can check yourself — not a proprietary score.

How to measure generative engine optimization

Three numbers, from the bottom of the chain up:

Reads. Which AI crawlers fetched which pages, and how often. If an engine never reads you, nothing above this matters.

What they were given. How much of each read was content. A read of a page that is mostly theme is a read of nothing.

Arrivals. People who came from an answer. ChatGPT tags its links, the others send a referrer — see tracking AI traffic .

GEO is not a trick for getting chosen. It is the removal of every reason an engine has to skip you — starting with the ones that have nothing to do with your writing.

Where to start with GEO

Start at step one and two, because they are mechanical and they are where most sites fail. Run the free scan : it fetches one of your pages the way an AI crawler does and shows what was left. If the facts are missing, no amount of rewriting will fix what the crawler was never handed.

Citable closes that gap without a rebuild: every AI crawler is answered with the content alone, on your own domain, and every read is listed for you — which engine , which page, and who it sent back. Then the writing work — statistics, quotations, answers first — lands on a page the engines can actually read. For the limits of all this, read what GEO can and cannot do .

The chain, drawn Access, then comprehension, then the choice.

Access — an engine you refuse never reads anything.

Comprehension — the facts have to survive the markup.

Choice — which stays the model’s, whatever anyone sells you.

Read next The rest of the set.

6 min read AI search optimization

How an assistant decides what to say about your site, and which of those steps a team can actually influence.

7 min read What GEO can and cannot do

What generative engine optimisation means, what it borrowed from SEO, and which parts of it are sold as certainty but aren't.

5 min read How AI crawlers read a website

Rendering, fetch budgets, robots.txt, and why a JavaScript-drawn price is invisible to almost every engine reading you.

7 min read Answer engine optimization (AEO)

What it means, three before-and-after examples, the practices that matter — and the step that comes before any of them.

6 min read How to get cited by ChatGPT

How ChatGPT picks the pages it cites, and the six things a site can actually do to show up in its answers.

5 min read Can ChatGPT read my website?

How it reads a site, why it does not run JavaScript, the five things that stop it, and how to check in a minute.

5 min read llms.txt: what it is, and what it does not do

What goes in the file, a working example, best practices — and whether any AI search engine actually reads it.

5 min read utm_source=chatgpt.com, and tracking AI traffic in GA4

What the tag on your URLs means, why ChatGPT adds it, and how to see every AI engine in Google Analytics.

6 min read Should you block AI crawlers?

Training bots, search bots and live fetch are three different decisions — and the one blocked by accident costs the most.

5 min read GEO vs AEO vs AIO vs LLMO

The full form and meaning of each, where the terms came from, and the four steps underneath all of them.

Or just look at it One page, served both ways.

What survives each trip, with the token count for both.

About Citable Who is behind this page, and what we stand on.

When an AI agent — ChatGPT, Claude, Perplexity or any of the 81 that Citable recognises — opens a page, Citable removes the theme, scripts, navigation and layout and serves only the content: the same facts, at the same URL, on the site's own domain. People and Google still get the full designed page.

Who opens the page What they are given

A person in a browser The full designed page, untouched.

Googlebot, Bingbot and other search engines The full designed page, untouched.

An AI agent — GPTBot, ChatGPT-User, ClaudeBot, PerplexityBot and the rest The content only: no UI, no scripts, the same facts at the same URL.

Measured, not estimated. A real product page of 386.8 KB is served to AI agents as 4.6 KB — 98.8% smaller, with the same facts. Every figure on this site comes from a fetch anybody can repeat.

One list. The 81 AI agents named on these pages are the list the product itself runs on. A page here cannot describe a crawler Citable does not serve.

Search is never touched. Googlebot and Bingbot always get your real page. The clean copy is for AI agents only — at the same address, with the same facts.

Checked, not trusted. A user agent is a claim, and anyone can send one. Where an operator publishes its addresses, every read is checked against them and recorded as verified or not.

Nothing about your visitors. Citable sees which crawler read which page. It does not see who your customers are, and their details never reach us.

Honest about limits. Nobody can promise a citation or a ranking, and we do not. What we show is what an AI agent was given, and whether it sent somebody back.

How it works · The measurements · What it touches and stores · Why Citable · Pricing · Questions, answered plainly · Talk to us

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Type your address. We fetch a page exactly as GPTBot does, count the tokens, and score fifteen things an answer engine needs. If the log then stays empty for a month, that is worth knowing too.

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