Generative engine optimization (GEO) is the work of getting your brand mentioned and your pages cited in the answers that AI systems write: ChatGPT, Gemini, Perplexity, Microsoft Copilot and Google's AI Overviews and AI Mode. This guide explains how those answers pick their sources, what you can do about it, and how to measure whether it is working.

What is generative engine optimization?

A generative engine is a search or chat product that writes an answer instead of listing links. You ask a question, it composes a response and, usually, names the sources it drew from. GEO is optimizing for that moment: being one of the sources, or the brand that gets recommended. The term comes from research on how to improve a website's visibility in generative engine responses, published in 2023, and it has since become the common name for the discipline. You will also see AEO (answer engine optimization), LLMO and “AI SEO” used for the same idea. If you are weighing it against traditional search work, read GEO vs SEO first: the short version is that GEO builds on SEO rather than replacing it.

How AI answers choose what to mention and cite

There are two broad ways an AI answer gets its content, and they behave very differently: Retrieval. The system searches the live web (or an index) for pages relevant to the question, reads passages, and writes the answer from them. Google's AI Overviews, Perplexity, and ChatGPT or Gemini when they browse work this way. Your pages can be picked up quickly, and changes to them can show up within days or weeks. · Training. The model answers from what it learned before its cut-off date. Whether it knows your brand depends on how widely and consistently you were written about across the web. This changes slowly and you cannot edit it directly. What retrieval tends to reward looks familiar: pages that are crawlable and indexed, that rank well for the question or close variants, that state the answer clearly, and that come from sources the wider web trusts. What training rewards is a clear, widely repeated picture of who you are. No provider publishes its exact selection rules, and they change them. Treat everything below as informed practice to test, not a formula.

Eight GEO tactics that are worth doing

1. Be crawlable, indexed and fast Every AI product that reads the web needs to reach your pages first. Check that your key pages return 200, are not blocked by robots.txt or a noindex tag, render their main content without a login, and load quickly. A site audit finds the usual blockers; SerpBeats site health runs about 40 checks on a crawl of your site. 2. Do not block the crawlers you want to appear in Some sites block AI crawlers in robots.txt, often by accident. If you want to be cited by a product, make sure the crawler it uses is allowed. Decide deliberately, product by product. 3. Answer the question in the first paragraph Put a direct, complete answer at the top of the page, then the detail. An answer that stands on its own is easy to lift and quote. Keep one clear page per question instead of spreading the answer thinly over many. 4. Use specific facts, definitions and sourced statements Concrete numbers, clear definitions and statements that name their sources give an AI something solid to rely on. The research that named GEO tested several content changes and reported that adding citations and statistics improved visibility in generated answers in its experiments. Vague, unsourced claims give an answer nothing to hold. 5. Structure pages for extraction Descriptive headings, short paragraphs, lists, tables and a real FAQ make passages self-contained. Use heading text that matches the way people phrase the question. 6. Make your brand facts consistent Use the same name, one-line description, location, category, pricing and key features everywhere: your site, social profiles, directories and listings. Add Organization structured data and a clear About page. An AI that finds conflicting facts is less likely to state any of them. 7. Earn mentions on other sites What other sources say about you strongly shapes what AI says. Reviews, comparison and “best tools” articles, industry directories, community discussions and press all count. Earn them by being useful and by taking part, not by paying for placements; low-quality link and mention schemes are risky for SEO and do not hold up for GEO either. 8. Keep important pages fresh Update pages whose facts change: pricing, features, comparisons, statistics. Show the update date. Stale pages are passed over for newer sources. llms.txt is a proposed file that describes a site for AI agents. It costs little to publish and some agents read it, but no major provider has said it affects what they cite. Add it if it helps your documentation, not as a ranking tactic.

How to measure GEO

AI answers vary between runs and between platforms, so a single check proves little. Measure it like a survey: Build a prompt set. 15 to 30 questions in the words your customers use: category questions, “best X for Y”, comparisons with named rivals, and how-to questions in your area. · Choose platforms. The ones your customers use: typically ChatGPT, Gemini, Perplexity, Copilot and Google's AI features. · Run on a schedule. Daily or weekly, the same prompts, the same settings (country matters; some platforms use location). · Record two things per answer. Was your brand mentioned? Was your site cited as a source? · Report rates. The share of answers that mention you and the share that cite you, per platform, with the trend, and a list of prompts where you are absent. That prompt list of “absent” questions is your GEO to-do list: each one is a page to write or improve, or a source to earn a mention from. SerpBeats AI visibility automates this loop: it asks your prompts on the platforms you pick, keeps each answer with its sources, and shows the AI visibility score, the score per platform and the weekly trend. Separately, every Google ranking scan reads the AI Overview for the keyword, so you see whether Google's summary cites you next to your organic position.

Common mistakes

Chasing one answer. Testing a single prompt once and drawing a conclusion. Always look at rates over many runs. · Writing for the machine only. Keyword-stuffed or hidden text hurts you in search and does not make an AI trust you. · Ignoring the SEO foundation. If you are not indexed or not ranking for your topic, GEO work has little to build on. · Expecting traffic as the proof. Visibility in answers often shows up first as brand searches and direct visits, not as clicks from the answer. · Believing guarantees. Nobody controls what an AI says. Anyone who promises guaranteed citations is selling something.