What is generative engine optimization (GEO)?

Generative engine optimization (GEO) is the work of making your brand and content show up inside answers written by generative AI systems such as ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot. It combines clear, citable content on your own site with a strong presence in the third-party sources these systems draw from.

Where the term came from

The term was popularized by a 2023 research paper titled "GEO: Generative Engine Optimization" by researchers from Princeton University, Georgia Tech, the Allen Institute for AI and IIT Delhi. The paper tested how different content changes affected whether a source appeared in AI-generated answers within the researchers' test setup. Among the methods it reported as helpful were adding citations to credible sources, including relevant quotations and adding statistics.

The marketing industry has since adopted GEO as a broad label for optimizing for AI answers. In everyday use, it overlaps heavily with answer engine optimization (AEO). Our post on SEO vs AEO vs GEO compares the three terms directly.

How generative engines build an answer

Simplified, most AI answer systems work in one of two ways, and often both at once.

1. From training data. The model answers from what it learned during training. This reflects the web as it was when the model was trained, and you cannot update it quickly.
2. From live retrieval. The system searches the web or its own index, reads a set of pages, and writes an answer based on them, often with citations. This is how ChatGPT search, Perplexity, Google AI Overviews and Copilot generally work for current questions.

This matters because the two paths need different strategies:

Good GEO addresses both.

What GEO involves in practice

1. Get your site retrieved

If a system cannot fetch your page, it cannot use it.

• Make sure search crawlers (Googlebot, Bingbot) and AI search crawlers (such as OpenAI's OAI-SearchBot and PerplexityBot, both documented by their companies) are not blocked in robots.txt or by firewall rules
• Make sure important content is in the HTML, not loaded only after JavaScript runs, since not every crawler renders JavaScript fully
• Keep pages indexed in Google and Bing. Google states that AI Overviews draw on pages that are indexed and eligible to show a snippet. OpenAI has said ChatGPT search uses third-party search providers alongside its own crawling.

2. Write content that is easy to cite

Generative systems tend to pull short, self-contained passages. Observed patterns that help:

• A direct answer at the start of each page and section
• Descriptive, question-style headings
• Specific facts, definitions and steps instead of general statements
• Named sources for any statistics
• Tables for comparisons and lists for steps
• Up-to-date information, especially for prices, tools and regulations

3. Build presence beyond your own site

When an AI system recommends providers or explains a topic, it often cites sources other than brand websites: review platforms, industry publications, comparison articles, forums and video platforms. Your brand needs to appear in the sources these systems already trust for your category.

That includes:

• Accurate listings on relevant review and directory sites
• Mentions and features in industry publications
• Genuine participation in communities where your buyers ask questions
• Consistent descriptions of what your company does across every profile

Our post on why brand mentions matter for AI search explains this in depth.

4. Be consistent about who you are

AI systems summarize what the web says about you. If your website, LinkedIn, directory listings and press coverage describe your company differently, the summary may be vague or wrong. Write one clear description of what you do, who you serve and where, and use it everywhere.

5. Monitor and correct

Ask the main AI tools questions your buyers ask and record what they say. Note:

• Whether you are mentioned
• Whether the description of your company is accurate
• Which competitors appear
• Which sources are cited

If answers are wrong, look at the sources being cited. Correcting outdated information at the source is usually more effective than anything you do on your own site.

GEO tactics compared

The last row is worth noting. Some tactics marketed as GEO essentials have little evidence behind them. Our post on llms.txt covers that one honestly.

What GEO is not

• A trick to force your brand into answers. AI systems change often, and short-term hacks tend not to last.
• A replacement for SEO. Much of GEO depends on your pages being indexed and ranking.
• Something you can guarantee. No one controls what a model writes. You can improve your odds.

Who should prioritize GEO

GEO deserves real budget when buyers research before they talk to sales, which describes most B2B services and software. Signs it should move up your list:

• Prospects mention that they "asked ChatGPT" or saw you in an AI answer
• Your category involves complex decisions that buyers want explained
• Competitors are being named in AI answers and you are not
• Your informational pages show rising impressions but falling clicks in Search Console, which can mean answers are being given on the results page

If your site still has basic indexing or content gaps, fix those first. GEO builds on them.

How to start this month

1. List 20 questions your buyers ask before they choose a provider like you.
2. Run them in ChatGPT, Perplexity, Gemini and Google (watching for AI Overviews). Record mentions and citations.
3. Check robots.txt and firewall settings for blocked crawlers.
4. Rewrite the opening of your five most important pages to answer the question directly.
5. Identify the three third-party sources cited most often for your topics, and work out how to appear in them accurately.
6. Repeat the checks monthly.

If you want an outside read on your AI search visibility and a plan to improve it, book a business audit. We run the checks across the main engines and tell you what to fix first.