Generative Engine Optimization (GEO): The Complete Guide

Key takeaways

Generative engine optimization (GEO) is the work of getting your business named and cited inside answers written by AI, such as ChatGPT, Gemini, Perplexity, Claude, Copilot and Google's AI Overviews and AI Mode.
The term comes from a 2023 study by researchers at Princeton and IIT Delhi, published at KDD 2024, which found GEO methods could raise visibility in AI answers by up to 40%.
GEO is built on SEO. Google says its AI features use the same best practices, and most AI assistants search the web before they answer.
Nobody can guarantee an AI mention. You can make your business easy to find, easy to quote and easy to trust, and measure the trend.

Up to 40%visibility gain in AI answers from GEO methods in the original study

1%of visits where people clicked a link inside a Google AI summary (Pew)

144answers logged in each of my GEO audits: 24 questions in 6 AIs

What is generative engine optimization (GEO)?

Generative engine optimization (GEO) is the practice of making your business, products and content easy for AI tools to find, trust and quote, so they name you when they write an answer. A generative engine is any AI that writes the answer instead of listing links: ChatGPT, Gemini, Perplexity, Claude, Copilot and Google's AI Overviews and AI Mode.

The name comes from research. In 2023, a team from Princeton University and IIT Delhi published GEO: Generative Engine Optimization, later presented at KDD 2024. They built a benchmark of real queries, rewrote web pages in different ways and measured how much of each page the AI used in its answer. The best methods raised a page's visibility by up to 40%. Since then "GEO" has become the umbrella term, next to AEO (answer engine optimization) and LLM SEO. If you want the technical side, read the LLM SEO guide.

How do AI engines choose which businesses to mention?

Most AI assistants search the web before answering a question that needs current or local information, then write a summary from the pages they trust. Google's AI Overviews and AI Mode use the Google Search index and run several related searches at once. ChatGPT, Claude and Perplexity use their own search crawlers. Pages they cannot read cannot be cited.

Google documents this openly: its AI features use a "query fan-out" technique that issues multiple related searches across subtopics, and pages only need to be indexed and eligible for a snippet. OpenAI explains that its OAI-SearchBot decides whether a site can appear in ChatGPT search; Perplexity and Anthropic publish the same for PerplexityBot and Claude-SearchBot. Once a page is readable, the AI picks what to quote: clear statements, specific facts, sources and signs that other people trust you, such as reviews and mentions on other sites.

Is GEO different from SEO?

GEO is an extension of SEO, not a replacement. SEO gets your pages into search results; GEO gets your business named inside AI answers. They share the foundation: crawlable pages, helpful content and trust. GEO adds a stronger focus on quotable facts, consistent business data, mentions on other sites and tracking what AI tools actually say.

	SEO	GEO
Goal	Rank pages in search results	Be named and cited in AI answers
Where you appear	Google and Bing results, Maps	ChatGPT, Gemini, Perplexity, Claude, Copilot, AI Overviews, AI Mode
What wins	Relevant, helpful, well-linked pages	The same, plus clear facts, sources and outside proof
How you measure	Rankings, clicks, leads	Mentions and citations by question, AI referral visits, leads

That is why the "is GEO just SEO with a new invoice?" debate on SEO forums has a point. A GEO offer that is only headings and schema is SEO with a new name. Real GEO adds the testing and the off-site work. More on that in Is SEO dead?

What does the research say actually works?

The original GEO study tested nine ways of rewriting pages. Adding quotations, adding statistics and citing sources worked best, raising visibility by about 30 to 40%. Writing more fluently helped too. Keyword stuffing did not help and even scored below doing nothing. The gains were largest for pages that ranked lower in normal search.

Two details from the study matter for a business. Pages that ranked fifth in search gained 115% visibility when they cited sources, while the top result lost some: GEO is a real opening for smaller competitors. And the effect varied by topic, so there is no single recipe. Outside the lab, a Semrush analysis of 217,000 prompts found Reddit among the most cited domains in Perplexity, ChatGPT search and Google AI Mode, and 80% of the Reddit posts cited had fewer than 20 upvotes. Conversations count, not just polished pages. That does not mean fake posts: the FTC's 2024 rule bans fake reviews and testimonials.

How do you measure GEO?

Combine a fixed test with the new official reports. Ask the same buyer questions in each AI every month and log who gets named and which sources are cited. Then read GA4's AI Assistant channel for chatbot visits, Bing's AI Performance report for Copilot citations and Search Console's generative AI reports where Google has enabled them.

Each official report sees only part of the picture. GA4's AI Assistant channel counts visits from chatbots like ChatGPT, Gemini and Copilot, but not Google's AI Overviews or AI Mode, which stay in organic search. Bing's AI Performance report shows citations in Copilot and Bing AI summaries. Google began testing generative AI performance reports in Search Console in June 2026 with a subset of sites. A manual question log fills the gaps, and it is the core of my GEO audit.

What GEO cannot promise

AI answers change from one run to the next and from one person to another, and no one outside the AI companies controls them. Be careful with anyone who guarantees a mention in ChatGPT. What GEO can do is remove the reasons an AI would skip you, give it facts worth quoting and track the trend honestly. In a Pew study, people clicked a link inside a Google AI summary on only 1% of visits, so the goal is not only the click: it is being the name the answer repeats.

GEO guides

Every GEO guide on this site, from the basics to the technical details. New guides are added here as they are published:

LLM SEO

LLM SEO: how to get large language models to cite your business.

How ChatGPT, Gemini, Claude and Perplexity find content, the 7 steps that get a business cited, and the tactics to skip.

Read the guide Is SEO dead?

Is SEO dead? No. It grew up into GEO.

What AI Overviews and ChatGPT really changed for search, what part of SEO is dying and what to do about it in 2026.

Read the guide Gemini SEO

Gemini SEO: how to get Google's Gemini to cite your business.

How the Gemini app finds its sources, what Google-Extended really controls and the six steps that get a business cited.

Read the guide GEO for ecommerce

GEO for ecommerce: get your products picked when shoppers ask AI.

The product data, feeds and reviews AI shopping assistants read, which features work outside the US, and how to measure it.

Read the guide GEO checklist

GEO checklist: 30 checks to get your business cited by AI.

The 30 checks I run before a GEO audit, in order: access, content, business data, outside proof, measurement, plus what to skip.

Read the guide Perplexity SEO

Perplexity SEO: how to get your site cited in Perplexity answers.

Perplexity's two crawlers, how it labels sources, why it cites some sites over others and six steps to earn citations.

Read the guide GEO tools

GEO tools: what to use to track your visibility in AI search.

Four free official reports, six paid AI visibility trackers compared from their own pages, and how to pick one without wasting money.

Read the guide AI share of voice

AI share of voice: how to measure it without fooling yourself.

The formulas behind AI share of voice, a worked example, how many prompts you need and how to measure it for free.

Read the guide AI Mode SEO

Google AI Mode SEO: how to show up when Google answers with AI.

How AI Mode picks pages with query fan-out, what Google says you need, seven steps to appear and how to track it.

Read the guide GEO strategy

GEO strategy: a 90-day plan to get your business cited by AI.

Which questions to target, whether to invest in your own site or outside sources, a 90-day plan and what GEO costs.

Read the guide Get cited by ChatGPT

How to get cited by ChatGPT: what makes it link to your page.

How ChatGPT search picks the pages it links to, what studies of millions of prompts found, six steps and how to track the clicks.

Read the guide

Ready to see what AI says about your business? Start with a GEO audit from $400, compare the monthly GEO plans for ongoing work, or go back to the home page.

Frequently asked questions

What does GEO stand for?

GEO stands for generative engine optimization: optimizing your business and content for AI tools that generate answers, such as ChatGPT, Gemini, Perplexity and Google's AI Overviews.

Who invented generative engine optimization?

The term was introduced in a 2023 research paper by Pranjal Aggarwal and colleagues from Princeton University and IIT Delhi, presented at the KDD 2024 conference.

Is GEO the same as AEO?

Very close. AEO, answer engine optimization, focuses on being the direct answer; GEO covers being named and cited in any AI-written answer. Most practitioners use them together.

Does GEO replace SEO?

No. AI search tools read the web, and Google says its AI features follow the same SEO best practices. GEO builds on SEO.

How much does GEO cost?

Step 1 is a GEO audit from $400, paid once, that finds every error. The monthly GEO plans cost $1,750 for Growth and $2,500 for Scale. Every plan and what it includes is on the GEO services page.

About the author

Juan José Giraldo is an SEO consultant in Medellín, Colombia, with 5+ years of experience. He works on technical and local SEO for 600+ US car dealerships at Reunion Marketing, an Inc. 5000 agency, and supervises the SEO of 18 US online stores with more than 3 million products at Prontomowers. Read more · LinkedIn.

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