What Is Generative Engine Optimization (GEO)? A Plain-English Guide

Key takeaways

Generative engine optimization (GEO) means making your business easy for AI assistants to find, trust and cite in their answers.
In the original GEO study (KDD 2024), citing sources, adding quotations and adding statistics improved visibility in AI answers by 30-40%.
Keyword stuffing didn't help, and on Perplexity it did worse than doing nothing.
Smaller sites gained the most: for sites ranked fifth in search, citing sources raised AI visibility by 115%.

For twenty years, "getting found online" meant ranking on Google. Now a growing number of customers skip the list of links entirely and ask ChatGPT, Perplexity, Gemini or Google's AI Overviews for an answer. The work of getting your business into those answers has a name: generative engine optimization, or GEO.

This guide explains what GEO is, where the term comes from, and, most usefully, what the research says actually moves AI answers.

Where the term comes from

"Generative engine optimization" was introduced in a 2023 research paper by researchers from Princeton, Georgia Tech, the Allen Institute for AI and IIT Delhi, later accepted to KDD 2024, one of the main data-science conferences. The authors called generative AI search tools "generative engines" and set out to measure how website owners could improve their visibility in the answers those engines write.

Their headline result: GEO techniques can boost a source's visibility in AI answers by up to 40%.

GEO vs. SEO in one sentence

SEO tries to rank your page in a list of results; GEO tries to get your business included and cited in an AI-written answer. They overlap more than people think: AI assistants that search the web still depend on search systems to find pages. Google says a page must be indexed and eligible to show a snippet to appear in AI Overviews or AI Mode, and OpenAI says its OAI-SearchBot is what surfaces websites in ChatGPT's search features. GEO starts where good SEO leaves off. (More on that in SEO isn't dead. It's how AI finds you.)

What the research says works

The GEO study tested nine ways of rewriting web content and measured how much each one changed a source's visibility in AI-generated answers. Three stood out, each improving visibility by roughly 30-40%:

Cite sources. Back up claims with references to credible sources.
Add quotations. Include relevant quotes from people with authority on the topic.
Add statistics. Replace vague claims with specific numbers.

What didn't work matters just as much. Keyword stuffing, the classic old-school SEO trick, offered "little to no improvement", and on Perplexity it performed 10% worse than leaving the content alone. AI assistants reward substance, not repetition.

Good news for smaller businesses

One finding should encourage every local and growing business: the study found that lower-ranked websites benefit significantly more from GEO than sites that already rank at the top. For sites ranked fifth in search results, simply citing sources increased visibility in AI answers by 115%. GEO is one of the few areas where a smaller business can close the gap on bigger competitors with better, more credible content.

GEO happens off your website too

Your own pages are only part of the picture. AI assistants lean heavily on what other trusted sources say. Muck Rack's December 2025 analysis of more than one million AI-cited links found about 94% came from non-paid sources and earned media alone accounted for 82%. That's why press coverage is such an effective GEO lever: it puts your business into exactly the kind of sources AI cites. (See why AI engines read the news.)

A practical GEO checklist

Be findable: make sure search engines can crawl and index your site, and don't block AI search crawlers like OAI-SearchBot in robots.txt.
Be specific: add real numbers (years in business, customers served, results) and cite where claims come from.
Be quotable: include clear statements from a named owner or expert.
Be consistent: use the same business name, location and services everywhere.
Be mentioned: earn coverage on trusted, indexed news sites.
Measure: check what AI engines say about you every month. (Here's how to track it.)

How AImpact does GEO

Our generative engine optimization service is built into every plan. It covers both halves of GEO: an AI-ready SEO foundation for your own site, and press campaigns that put your business on trusted news sites, written the way the research says AI prefers: facts, figures and quotes. Get a free AI visibility check to see where you stand today.

AImpact Editorial Team

Our team plans and writes press campaigns, builds cloud stacks and runs AI visibility tracking for businesses every month. We check every claim in our articles against the sources listed below.

What is generative engine optimization (GEO)?