LLM SEO
LLM SEO, GEO, AEO, AI SEO and ChatGPT SEO are five names for one discipline: getting large language models to cite your site inside their answers. This page is the map, so you stop buying the same thing five times.
The fastest way to waste budget in 2026 is to hire one vendor for GEO, another for AEO, and a third for LLM SEO, and pay three times for the same work. These are not three disciplines. They are one practice wearing five labels.
LLM SEO is the work of getting a large language model to retrieve, trust and cite your pages when it composes an answer. Whether a vendor calls it generative engine optimization, answer engine optimization, AI SEO or ChatGPT SEO, the underlying signals are identical: machine-readable facts, citable answer blocks, clean entity identity, and direct crawler access. This page exists to settle the vocabulary so you can buy the outcome once. When you are ready for the hire, that is the LLM citation consultant role.
LLM SEO and its four synonyms, defined
LLM SEO
The broadest label: optimizing so any large language model, in any product, cites you. Useful when you do not want to tie the work to one engine or one vendor's branding. It is the umbrella this page sits under.
GEO, generative engine optimization
The academic and industry-standard term, framed from the search index outward. If you want the strategy and the operator track record behind the work, that lives on the GEO consultant page, and the productized deliverables on GEO services.
AEO, answer engine optimization
The same work, framed from the buyer's question inward, focused on engines that compose a single answer. See AEO services for that cut. AEO and GEO are interchangeable in practice.
AI SEO and ChatGPT SEO
Consumer-friendly labels, usually used when the buyer is thinking specifically about ChatGPT or about AI search in plain language. They describe no different work; they are search terms, not separate services. Treat them as entry points to the same discipline.
Five names, one set of signals
No matter which term a model maker uses, the levers that decide whether you get cited are the same four. That is why splitting them into separate hires is waste.
First, citable answer blocks: passages a model can lift cleanly, with a question, an answer and a number up front. Second, machine access: the AI crawlers can reach your pages and the facts are in valid JSON-LD. Third, entity clarity: a model can resolve who you are across Wikidata, LinkedIn and the knowledge graph. Fourth, corroboration: your claims are backed by primary sources or original data. Any honest LLM SEO, GEO, AEO or AI SEO engagement works these four levers. If a vendor sells you one label as if it were a unique science, that is a pricing tactic, not a discipline.
The proof that the category is wide open is in the numbers. The State of AI Search 2026 benchmark scored 61 SaaS sites on AI-search visibility and 67% scored 60 or below. Most companies are not losing to a competitor who mastered some secret label; they simply have not done the work under any name.
How to buy LLM SEO without getting played
Once you know the five terms are one discipline, buying LLM SEO gets simple. You are not choosing between services; you are choosing an entry point that matches where you are.
If you do not yet know whether AI engines cite you, start with a diagnostic: the GEO audit gives you a 0-100 score and a gap list, so you buy the work knowing the size of the problem. If you already know you have a problem and want it fixed, skip to the LLM citation consultant engagement and the productized GEO services that ship the deliverables. If you only want to understand the field before spending anything, read the State of AI Search benchmark and the GEO consultant overview first. The mistake to avoid is buying by label. A vendor who quotes you separately for GEO, then AEO, then LLM SEO is either confused or counting on you to be. Ask any LLM SEO vendor one question: which of the four levers, citable blocks, machine access, entity clarity and corroboration, will you ship, and how will I see the citation move. If they answer in deliverables and measurement, they do the work. If they answer in labels and billable hours, they are selling you vocabulary at a markup.
One more filter saves you the most money: ask to see a live citation, a real query where the vendor moved a brand from uncited to cited inside an answer, with the before and after. Anyone who has actually done LLM SEO can show you one. Anyone who only renames the service cannot, because renaming a thing does not get it cited. The work is the work under every label, and the work is the only thing that earns the citation.
The common thread across every label is access: the model has to be allowed to fetch your page. You can verify that against each crawler's published behavior, for example OpenAI's bot documentation. No access, no citation, whatever you call the work.
Buy the outcome once, not the label five times
Now that the vocabulary is settled, the only real decision is whether you want a diagnostic first or to start the work. Get your GEO audit for the score, or talk to the LLM citation consultant to start getting cited.
Deciding who should own this work? See how to vet a GEO expert before you brief anyone.
Frequently asked questions about LLM SEO
What is LLM SEO?
LLM SEO is the practice of getting large language models such as ChatGPT, Perplexity, Gemini and Google AI Overviews to retrieve, trust and cite your site inside their answers. It works four levers: citable answer blocks, machine access for the AI crawlers, clean entity identity, and corroborated claims. It is the same discipline as GEO, AEO, AI SEO and ChatGPT SEO under a different name.
Is LLM SEO the same as GEO and AEO?
Yes. LLM SEO, GEO (generative engine optimization) and AEO (answer engine optimization) describe one practice from different angles. AI SEO and ChatGPT SEO are consumer-friendly labels for the same work. The signals that decide whether you get cited are identical across all five, so you should buy the outcome once, not five times.
Do I need a separate vendor for each of these?
No, and hiring separate vendors for GEO, AEO and LLM SEO means paying three times for identical work. One operator who works the four levers covers every label. If a vendor sells one term as a unique science, that is a pricing tactic.
Where do I start with LLM SEO?
Start with a diagnostic to see who the engines cite for your buyer queries today, then execute. The GEO audit returns a 0-100 score and a build order, and the LLM citation consultant engagement does the work. Because the category is early, the first fixes are usually fast and compound quickly.