What is generative engine optimisation (GEO)?
Generative engine optimisation (GEO) is the discipline of structuring your business's content, brand signals and online presence so that large language models (LLMs) - the technology powering ChatGPT, Claude, Perplexity, Gemini and Google AI Overviews - can identify, trust and cite your business when generating answers for users. GEO is a distinct discipline from traditional SEO: while SEO targets Google's ranking algorithm, GEO targets the training data, retrieval pipelines and trust signals that AI systems rely on when deciding which businesses to recommend.
The term was coined in a 2023 research paper from Princeton, Georgia Tech and other universities, and has since become the standard term for AI-focused search optimisation in the industry.
Why GEO matters for your business right now
When someone types "best AI SEO agency in London" into ChatGPT, they are not scrolling through ten blue links - they are reading a paragraph that names two or three businesses directly. The ones named were not chosen because they paid for ads or have the most backlinks. They were chosen because their content, their entity signals and their brand facts were structured in a way that let the AI engine understand, trust and recommend them.
That is GEO in one sentence: the discipline of being the business that gets named.
The urgency is real. In June 2026, Google AI Overviews are appearing on over 50% of informational searches. ChatGPT has over 200 million weekly active users asking it questions about who to hire, which product to buy and which service is best. Perplexity is growing at over 100% year-on-year. The businesses that build GEO foundations now will dominate these channels in 12 months. The ones that wait will find the slot is occupied.
How GEO differs from traditional SEO
Traditional SEO is primarily about signals Google's algorithm can measure: backlinks, page authority, keyword usage, technical structure and click-through data. GEO is about signals that LLMs use to determine which businesses to trust and cite:
- Topical authority - LLMs weight depth of coverage on a narrow topic. A site with 15 pages about AI SEO is more likely to be cited than one with one page using the same keywords.
- Entity consistency - LLMs recognise businesses as entities. If your name, address, description and credentials are inconsistent across GBP, LinkedIn, Companies House and your website, the LLM cannot confidently identify and attribute you.
- Atomic facts - LLMs extract specific, citable facts - prices, years of experience, specific credentials, measurable outcomes. Vague promotional language is skipped; precise factual statements are cited.
- Corroboration - LLMs trust information that appears across multiple independent sources. A business mentioned consistently on GBP, Clutch, LinkedIn, industry directories and its own website is more trustworthy than one that only claims things on its own pages.
- Content format - LLMs extract answer-first content with clear structure. A 2,000-word page buried in dense paragraphs is less extractable than the same information structured with a direct answer at the top, question-style headings and an FAQ section.
The six foundations of GEO
1. Entity establishment
Your business must exist as a recognisable, consistent entity that LLMs can identify. This means: the same business name everywhere, consistent registered address, consistent description of what you do, and your founder named as an individual with verifiable credentials. Organisation schema on your homepage is the technical anchor.
2. Topical authority cluster
LLMs recognise topical authority through depth of coverage. If you run an AI SEO agency, you need pages on AI SEO, GEO, AEO, LLM SEO, ChatGPT citation, Perplexity optimisation and the specific questions buyers ask about all of these topics. A single page cannot signal authority; a cluster of 15-20 interconnected pages can.
3. Answer-first content
Every page that targets a question should lead with a direct, complete answer in the first 60-130 words. LLMs extract this answer and attribute it to your site. Content that buries the answer in paragraph three is structurally invisible to the extraction layer.
4. Structured data
Schema markup (Organization, Person, Service, FAQPage, HowTo) gives LLMs machine-readable information about your business. FAQPage schema is particularly powerful: it tells AI engines exactly which question each answer pair belongs to, making extraction and attribution much more reliable.
5. Corroboration stack
The same facts about your business - name, location, services, credentials, price range - should appear consistently across Google Business Profile, LinkedIn, Clutch or sector directories, Bing, and any relevant industry registers. LLMs treat multi-source corroboration as a trust signal equivalent to backlinks in classic SEO.
6. Bing indexation
ChatGPT (in search mode) and Perplexity both pull primarily from Bing's index, not Google's. Bing indexation via Bing Webmaster Tools, BingSiteAuth verification and OAI-SearchBot crawler access are non-negotiable GEO foundations that most businesses have not set up.
GEO vs SEO: which should you do first?
For most UK small businesses in 2026, the answer is both simultaneously - not one then the other. GEO-optimised content is also better SEO content: the direct answer blocks, structured headings, FAQ schema and entity signals that help LLMs extract your content also help Google understand and rank it. The disciplines are more complementary than competing.
However, the timing dynamics differ. GEO can produce citations faster than SEO produces rankings on competitive terms - because LLMs weight content quality and corroboration over domain authority, which new sites do not have. A new business with strong GEO can appear in ChatGPT answers in eight to fourteen weeks; the same site might take six to twelve months to rank on page one of Google for the same keyword.
How long does GEO take?
First AI citations typically appear eight to sixteen weeks after the corroboration stack and GEO-formatted content are published and indexed. Google AI Overview citations can appear in two to six weeks for AEO-formatted content. The gains compound: each new piece of topical authority content increases the likelihood that LLMs cite you for adjacent queries, creating a flywheel that grows over time.
Frequently asked questions about GEO
Is GEO the same as ChatGPT SEO?
ChatGPT SEO (also called LLM SEO) is a component of GEO that specifically targets ChatGPT citations. GEO is the broader discipline covering all AI engines - ChatGPT, Claude, Perplexity, Gemini and Google AI Overviews. LLM SEO tends to focus on the technical side (Bing indexation, OAI-SearchBot access); GEO covers the content architecture, entity signals and corroboration strategy as well.
Can a small business do GEO without an agency?
Yes, with sufficient time and technical knowledge. The foundations - entity schema, Bing indexation, corroboration stack, topical cluster content - can all be done without an agency. The challenge is that GEO requires sustained content production, entity signal maintenance and citation monitoring that most small business owners do not have time for. An AI SEO agency handles this ongoing work so you can focus on delivering your service.
How do I know if my GEO is working?
Ask ChatGPT, Perplexity and Claude directly: "who are the best [your service] in [your location]?" and "what do you know about [your business name]?" Track whether you appear in the answers and whether the information is accurate. For systematic monthly monitoring, our AI visibility audit service tracks citations across all five major AI engines.
Ready to build GEO for your business? Start with a free AI visibility audit or see our GEO service.
