Ask ChatGPT for the best accounting software for a ten-person company and it writes you a short answer with a few names in it. Nobody scrolls through ten blue links first. So what is generative engine optimization, and why are marketers suddenly talking about it? It is the practice of making your content easy for AI answer engines to find, trust and quote, so your brand shows up inside the answer itself.
This guide answers what is generative engine optimization in plain language, shows how it differs from classic search optimization, and gives you a starter checklist you can work through in a few weeks. It is written for small and mid-sized businesses in Europe that have no dedicated SEO specialist, and for agencies that need one clear explanation to share with clients. Each part links to a deeper guide in our AI search series.
Key takeaways
Generative engine optimization (GEO) means shaping your content and your brand's presence so AI answer engines mention, cite and recommend you.
GEO builds on SEO. Pages that cannot be crawled, indexed and understood will not appear in AI answers either.
Google says its AI features rest on its core ranking systems and need no special markup or files.
Outside Google, brand mentions on other sites, clear entity information and quotable, factual content carry more weight.
Start with a short checklist: allow the right crawlers, write answer-first pages, build third-party mentions and measure results.
What is generative engine optimization? A plain definition
A generative engine is a search tool that uses a large language model to write an answer, usually with links to the sources it used. ChatGPT with search, Perplexity, Gemini, Microsoft Copilot, Google AI Overviews and Google AI Mode all fit that description. What is generative engine optimization in practice? It is the work of improving how often and how well those engines include your brand and pages in their answers.
The term comes from a research paper. In November 2023, a team led by Pranjal Aggarwal published "GEO: Generative Engine Optimization". The authors proposed GEO as a framework for improving content visibility in generative engine responses and reported that it can increase visibility by up to 40 percent in their tests. They also found that results vary by subject area. Treat that figure as a research result on a benchmark, not a promise for your site.
Other names you will see
The industry has not settled on one label. You will also see answer engine optimization (AEO), LLM optimization, AI search optimization and AI SEO. They overlap heavily, so the answer to what is generative engine optimization barely changes with the label. Some people use AEO for winning short direct answers and GEO for the wider goal of being cited by AI systems, but the daily work is nearly the same. This series uses GEO throughout. If you only need the quick answer to what is GEO, it is optimization for AI-written search answers.
Why GEO matters for small businesses and agencies
Search behavior is splitting into two habits. Some people still type a short query and scan links. Others ask a full question and read the written answer. If you are still wondering what is generative engine optimization worth to your business, consider where your buyers do their research. A procurement manager comparing suppliers may now ask an assistant for a shortlist before opening a single website.
That shortlist is where small brands can win or disappear. Large publishers dominate many classic search results, but an AI answer has room for only a few names. A small firm with a clear specialty, strong reviews and well-written pages can earn one of those places. Agencies have a second reason to care. Clients may ask whether they appear in ChatGPT, and an agency that can explain and measure it has a service to sell.
Be careful about hype, though. Nobody can promise a placement in an AI answer, and the engines do not publish ranking formulas. What you can do is remove obstacles, publish material worth quoting and check the outcome on a schedule.
Where GEO applies: the main AI answer engines
Each engine finds content in its own way, and that affects what you should do. The table summarizes what the vendors say publicly.
Engine | How it reaches your content | What to check |
ChatGPT search | OpenAI's OAI-SearchBot surfaces sites in search features. GPTBot is a separate crawler for model training. | Allow OAI-SearchBot in robots.txt. Settings are independent, so blocking GPTBot does not block search. |
Perplexity | PerplexityBot surfaces and links sites in Perplexity search results. Perplexity-User fetches pages when a person asks a question. | Allow PerplexityBot in robots.txt and permit its published IP ranges. |
Google AI Overviews and AI Mode | Built on Google Search. A page must be indexed and eligible to show with a snippet. | Normal SEO fundamentals. Google says there are no additional requirements. |
Gemini, Copilot and others | Each uses its own mix of search indexes and crawlers. | Test your brand directly and read each vendor's publisher documentation. |
Sources for the table: OpenAI's crawler documentation, Perplexity's crawler documentation and Google's AI features and your website page. Bot behavior can change, so check the vendor pages before you edit your robots.txt. OpenAI notes that robots.txt updates can take about 24 hours to be reflected.
GEO vs SEO: what stays the same and what changes
If you are asking what is generative engine optimization compared with search optimization, the answer is short. GEO vs SEO is not a fight. The two share a foundation and differ at the top of the funnel. Our longer piece on AI SEO vs traditional SEO goes deeper, so this is the short version.
Topic | Classic SEO | GEO |
Goal | Rank a page high in a list of links | Be named, quoted or linked inside a written answer |
Main result | Rankings, clicks, traffic | Mentions, citations, recommendations |
Query style | Short keywords | Long, conversational questions |
Content unit | The whole page | A clear passage that answers one question |
Off-site signals | Backlinks | Backlinks plus brand mentions, reviews and discussion |
Measurement | Rank trackers, Search Console | Prompt testing, citation logs, AI visibility tools |
Stability | Fairly stable between checks | Answers vary from run to run |
Notice what is shared. Crawlability, helpful original content, a fast and clear site, and a trustworthy brand all matter in both. If your SEO basics are weak, fix them first.
What Google says about GEO
Google is clear on this point. In its documentation on AI features and your website, it says a page must be indexed and eligible to appear in Search with a snippet to be shown as a supporting link in AI Overviews or AI Mode. It adds that there are no additional requirements and no special optimizations needed.
Google also says AI features may run several related searches across subtopics to build an answer, which it calls query fan-out. In its AI optimization guide, it tells site owners they do not need an llms.txt file, content split into fragments or special schema.org markup for these features, and it recommends treating third-party GEO promises with care. Its strongest advice is to publish unique, non-commodity content that adds something others do not.
So for Google, what is generative engine optimization? Mostly good SEO with a sharper focus on original content. That does not make GEO pointless. For ChatGPT, Perplexity and other engines, the mix of signals can differ, and brand mentions across the web matter more because the models draw on a wider set of sources.
How to do GEO: a starter checklist
Once you understand what is generative engine optimization, the next question is how to do GEO without a big budget. Work through these steps in order. Each one links to a guide with more detail.
Check that engines can reach you. Review robots.txt, your firewall and any bot-blocking tools. Allow OAI-SearchBot and PerplexityBot if you want to appear in those products. Our article on why your website is not showing in ChatGPT walks through the full diagnosis.
Fix the basics of indexing. Make sure key pages are indexable, load quickly and render without needing a login or heavy scripts.
Write answer-first pages. Put a short, direct answer under each question-style heading, then add detail. See how to optimize content for AI search for page-level tactics.
Say who you are, clearly. Use the same company name, description, location and service list across your site and profiles. Engines need to know which entity they are describing.
Add original substance. Include your own data, examples, pricing logic, screenshots or expert quotes. Content that repeats what ten other pages say gives a model no reason to pick yours.
Earn mentions on other sites. Reviews, comparison pages, industry publications and community discussions can all shape what AI answers draw on. Our playbook on how to get cited by ChatGPT covers this in detail.
Prepare for Google's features. Read our walkthrough on improving your visibility in Google AI Overviews, because Google's behavior differs from other engines.
Measure and repeat. Test a fixed set of buyer questions each month. We explain the method in how to track brand visibility in AI search.
A worked example
Here is what this looks like in practice. Imagine a twelve-person bookkeeping firm in Lyon. Its service page says "We offer comprehensive accounting solutions." That sentence answers nothing. The firm rewrites the page with a heading, "How much does bookkeeping cost for a small business in France?", and a two-sentence answer with a price range and what drives it. It adds a short comparison of its packages and lists its credentials. This is an illustration, not a case study. The point is that the new version gives an engine a clean passage it can quote, which the old one never did.
GEO marketing: the work beyond your own website
Many teams treat GEO marketing as a content task only. That misses half of it. AI engines build answers from many sources, so the places that talk about you count as much as the pages you publish.
Reviews and directories. Keep profiles on the review sites that matter in your category accurate and active.
Digital PR. Contribute expert comments, data and guest articles to publications your buyers read.
Community presence. Forums, Q&A sites and video platforms can feed AI answers. Answer questions there as a real person, not as an advertisement.
Partner and comparison pages. If a roundup in your category is cited often, ask to be included, and only if you are a real fit.
Be careful with shortcuts. Google warns that seeking inauthentic mentions across the web is not as helpful as it might seem, and its spam systems exist to catch manipulation. Earn the coverage with something worth citing.
Who should do what
The right amount of effort depends on your size. Small businesses should focus on steps one to five of the checklist, which cost mostly time. Agencies should add a repeatable audit and monthly reporting for clients. Creators and influencers should make their name, niche and best work easy to identify across their channels and website, since engines often answer questions about people as well as products.
How to measure whether GEO is working
Many teams skip this step and then cannot show results to a boss or a client. Part of understanding what is generative engine optimization is accepting that GEO results are harder to see than rankings, so decide on your measures early. Track how often your brand is mentioned, how often your URLs are cited and how you compare with competitors for a fixed list of prompts. Add AI referral traffic in your analytics. ChatGPT, for example, adds a utm_source=chatgpt.com parameter to referral links, according to OpenAI's publisher FAQ, which makes those visits easy to segment.
Keep expectations realistic. Answers change between runs, engines update often, and some visits arrive without a referrer. Look at trends over months, not single results.
Common GEO myths
Because the field is new, advice about what is generative engine optimization varies widely in quality. These claims come up most often.
"You need an llms.txt file." Google says its Search does not use these files. Other services may, so treat it as optional.
"SEO is dead." The same crawling, indexing and quality systems sit underneath most of these engines.
"More pages means more citations." Mass-producing near-duplicate pages can violate Google's spam policies and rarely earns trust.
"Schema guarantees inclusion." Structured data helps machines read a page, but Google says no special markup is needed for AI features.
"One test tells you where you stand." Answers vary, so test repeatedly.
How RankFixer supports GEO
RankFixer is built for both classic search and AI answers. Its content optimization editor helps you shape pages around the questions and topics your competitors cover, and its AI visibility tracking shows whether your brand appears in AI answers. That lets you test the checklist above and measure the effect in one place. To get started, download the GEO starter checklist.
Frequently asked questions
What is generative engine optimization in simple terms?
It is the practice of improving your content and brand presence so AI search tools mention and cite you in their written answers. It covers your own pages and the other sites that talk about you. Think of it as SEO adapted to answer engines.
Is GEO different from SEO?
Partly. Both depend on crawlable, helpful, trustworthy content. GEO adds a focus on passages that can be quoted, on brand mentions across the web and on measuring citations rather than rankings. Google itself describes optimizing for its AI features as an extension of search optimization.
Do I need special tools or markup to do GEO?
No special markup is required for Google's AI features, according to Google. Tools help with measurement, because you need to test many prompts across several engines. You can begin with a spreadsheet and the checklist above.
How long does GEO take to work?
It depends on your starting point. Technical fixes such as unblocking a crawler can take effect once the engine recrawls your site. Building authority through mentions and original content usually takes months. Measure monthly and expect gradual change.
Turn the basics into a plan
So, what is generative engine optimization? It is SEO extended to a world where AI writes the answer: make your site reachable, make your pages quotable, build a reputation others will cite and measure the result. A realistic approach to GEO starts with the eight-step checklist, not with tricks. Pick the first two steps this week, then return to the cluster guides as you go.
Ready to start? Download the RankFixer GEO starter checklist and work through it with your team.
