Generative Engine Optimization (GEO): What It Is and How It Differs from SEO

Generative Engine Optimization (GEO) is the practice of getting a brand surfaced and cited in answers written by AI assistants such as ChatGPT, Gemini, Perplexity, Copilot and Google’s AI Overviews. Where SEO aims to rank a page in a list of links, GEO aims to have your content found, understood and reused as a trusted source inside a generated answer.

The acronym is everywhere, usually wrapped in bold promises. Here is a clear definition, what genuinely works, and where to start.

Key takeaways

• GEO builds on SEO: if your pages cannot be crawled, indexed and trusted, no AI can cite them.
• AI assistants favour sources they can retrieve, extract and trust.
• The practical levers: answer-first sections, FAQs, structured data, consistent brand facts, crawler access, reviews and mentions.
• Nobody can guarantee a citation: you track a trend, using a prompt panel and AI referral traffic.

GEO in one paragraph, plus the jargon

When someone asks a web-connected AI assistant a question, it runs searches, reads a shortlist of pages and writes a summary, often with links to its sources. GEO is about maximising the chance that your pages make that shortlist and that your information is reproduced accurately. Several acronyms describe closely related ideas:

• GEO (Generative Engine Optimization): optimising for generative engines in general.
• AEO (Answer Engine Optimization): optimising for answer engines; an older term that also covers featured snippets and voice assistants.
• LLMO (Large Language Model Optimization): optimising for large language models, with a focus on how they perceive and describe a brand.
• AI Overviews: the AI-generated summaries Google shows above some search results.
• AI Mode: Google’s conversational search mode, which answers with a synthesis and lets users ask follow-up questions.

How AI assistants choose their sources

A language model does not “know” the live web. To answer a specific or recent question, assistants lean on search (often called retrieval-augmented generation), in three steps:

1. Retrieval: the assistant queries a search index (its own, or one from an engine such as Google or Bing) and pulls a handful of candidate pages.
2. Extraction: it isolates the passages that answer the question most directly.
3. Synthesis: it writes an answer from those passages, favouring sources that look reliable and agree with each other.

Three qualities therefore make the difference. Being retrievable: your pages must be open to crawlers and rank well in search indexes. Being extractable: information should sit in short, self-contained, explicit passages. Being trustworthy: your brand should be described the same way everywhere (website, business profile, directories, articles), with facts that can be checked. Freshness matters on fast-moving topics too: a dated, maintained page stands a better chance than content that never changes.

SEO vs GEO: what stays the same, what changes

The fundamentals do not change. Google itself states that there are no special requirements to appear in its AI features beyond standard SEO best practice. GEO is not a separate discipline: it is rigorous SEO, written to be read by machines as much as by people.

Seven first actions

1. Answer first. Open every page and every section with a direct two- or three-sentence answer, then expand. That is exactly the format an AI can lift.
2. Add useful FAQs. Questions your customers genuinely ask, with short, factual answers.
3. Use structured data. Organization, LocalBusiness, Service, Article and FAQPage markup clarify who you are and what you offer.
4. Align your brand facts. Name, address, offer, starting prices, service area: the same information everywhere, from your website to your Google Business Profile and social profiles.
5. Check crawler access. Review your robots.txt and firewall rules: accidentally blocking assistants’ search crawlers (such as OAI-SearchBot for ChatGPT or PerplexityBot for Perplexity) makes you invisible in their answers. The llms.txt file is a proposed convention with limited adoption so far: a nice extra, never a prerequisite.
6. Earn reviews and mentions. Genuine customer reviews and mentions in credible third-party sources strengthen the trust placed in your brand.
7. Structure your site. Descriptive headings, one idea per section, tables and lists for comparisons, fast and accessible pages. A well-built website remains the foundation for everything else.

Measuring without fooling yourself

GEO measurement is still imperfect, but two methods give a reliable view of the trend:

• A prompt panel: a fixed list of 20 to 50 questions your customers really ask, run every month in the main assistants. Record whether your brand appears, whether it is cited with a link, and whether the information is accurate.
• AI referral traffic: in GA4, isolate visits from chatgpt.com, perplexity.ai, gemini.google.com or copilot.microsoft.com. Traffic from AI Overviews, on the other hand, is reported together with regular Google Search.

What nobody can honestly promise: a guaranteed citation, a fixed spot in an answer, or identical results for every user. Answers vary with phrasing, history and timing. Be wary of any offer that claims otherwise.

To put this into practice, see how to write pages AI assistants quote.

Where to start

Start with what serves SEO and GEO at the same time: a fast, well-structured website, service pages that answer your customers’ questions clearly, and consistent information everywhere. GEO also feeds your other channels: when an AI recommends your business, the prospect usually searches for you on Google next, so your campaigns and content need to tell the same story.

Want a clear view of how visible your website is, in Google and in AI answers? Book a free audit with our team: we review your key pages with you and you leave with clear priorities. The call is free and comes with no obligation.