What is generative engine optimization (GEO)?
Generative engine optimization (GEO) is the practice of making your brand the one AI assistants mention, recommend and cite when people ask them questions. SEO aims for a ranked link on a results page; GEO aims for a place inside the answer itself, in ChatGPT, Gemini, Claude and Google's AI Overviews and AI Mode.
Key takeaways
- GEO targets the answer, not the list of links under it.
- In the research that named GEO, adding sources, quotations and statistics raised visibility in AI answers by up to 40%. Keyword stuffing didn't work.
- AI engines can only cite pages their search crawlers can read, so crawler access comes first.
- Success is measured as the share of answers that mention you, not a single rank.
Where does the term come from?
The term comes from a 2023 paper by researchers from Princeton University and IIT Delhi, titled GEO: Generative Engine Optimization. They built a benchmark of real queries, rewrote source pages in different ways, and measured how often each version showed up in answers written by a generative engine.
Their headline result: optimization "can boost visibility by up to 40% in generative engine responses." The methods that worked best were the least glamorous. Citing sources, adding quotations from relevant experts and adding statistics each improved visibility by roughly 30 to 40% on their main metric. Keyword stuffing, the reflex of old-school SEO, didn't perform well.
How do AI engines decide what to mention?
When someone asks an assistant which product to buy, most assistants don't rely on memory alone. They run a live web search, read a handful of pages, and write an answer from what they found. That gives you four things to work on:
- Be retrievable. The engine's search crawler must be allowed to read your pages, and the pages must be indexed. OpenAI, for example, says sites that block its search crawler "will not be shown in ChatGPT search answers."
- Be extractable. A page that answers the question in its first two sentences is easy to quote. A page that makes the reader scroll through a story isn't.
- Be credible. Specific numbers, named sources and dates give an engine something it can repeat with confidence.
- Be mentioned elsewhere. Engines cross-check. A brand that appears on review sites, comparison articles and forum threads alongside its competitors is far more likely to be named than one that only talks about itself.
How is GEO different from SEO?
| SEO | GEO | |
|---|---|---|
| Goal | A ranked link that gets clicked | A mention or citation inside the answer |
| Unit of success | Position on a results page | Share of answers that name you |
| Queries | Short keywords | Full questions with context, like team size or budget |
| What helps most | Relevance, links, technical health | Direct answers, specifics, sources, third-party mentions |
| Stability | Fairly stable day to day | Varies between runs, so it's measured over many answers |
The foundations are shared. Google says there are "no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary" beyond its usual guidance. Good GEO is good SEO with a sharper focus on answering the question. We cover the differences in more depth in GEO vs SEO.
What does GEO work actually involve?
- Find the prompts that matter. Buyers ask assistants for shortlists: "best invoicing app for freelance designers", "alternatives to [a competitor]", "[product A] vs [product B]". Our free Buyer Prompt Generator drafts a starting list.
- Check who gets recommended today. Ask each prompt on each engine, with web search on, and note the brands and the pages cited.
- Publish a page per question. Answer first, then earn it: a fair comparison table, current pricing, specific strengths and weaknesses, an FAQ and your sources.
- Open the door to crawlers. Allow the search crawlers in robots.txt. The free AI Crawler Checker shows which ones your site blocks.
- Get onto the pages engines already cite. If an assistant keeps citing one review roundup, being included in that roundup is worth more than another blog post.
- Track it weekly. Answers change as engines re-search and re-rank.
How do you measure GEO?
Because the same prompt can produce different answers, GEO is measured over many answers rather than one:
- Visibility: the share of answers that mention you.
- Share of voice: your mentions as a share of all brand mentions across those answers.
- Average position: where you appear when you're mentioned, first or fifth.
- Citations: how often your own pages are listed as sources.
- AI referrals: visits that arrive from ChatGPT, Perplexity, Claude and others.
Is GEO worth doing now?
Buyers who ask an assistant for a recommendation are close to a decision. They want a shortlist, and whoever makes that shortlist gets the demand. The work that earns a place in AI answers, clear pages with real facts that other sites reference, also tends to lift traditional rankings. That makes GEO one of the rare marketing investments that pays twice.
Frequently asked questions
Is GEO the same as AEO?
Mostly. Answer engine optimization (AEO) is the older term, first used for featured snippets and voice assistants. GEO, AI SEO and LLM optimization describe the same goal for AI assistants: being the answer, not just a link.
Does GEO replace SEO?
No. AI engines lean on search indexes to find pages, and Google says its AI features follow the same guidance as regular search. GEO builds on SEO and shifts the emphasis toward direct answers, specifics and third-party mentions.
Which AI engines matter for GEO?
The ones your buyers use. For most businesses that means ChatGPT, Google's AI Overviews and AI Mode, Gemini, Perplexity and Claude. Each searches the web differently, so a brand can lead on one and be missing on another.
Can you pay to be recommended by an AI assistant?
Not inside the organic answer. What gets mentioned depends on what the engine finds and trusts, which is why the work is about pages, facts and mentions rather than bids.