LLMO — LLM optimization — is the practice of making your content easy for large language models to read, understand and cite. As tools like ChatGPT, Gemini and Perplexity become a real discovery channel, LLMO joins SEO as a discipline worth deliberate attention. Here’s what it means and how to act on it.
LLMO, GEO, AEO: the same idea, different labels
You’ll see several acronyms for closely related ideas: LLMO (LLM optimization), GEO (generative engine optimization) and AEO (answer engine optimization). They overlap almost entirely — all describe optimising content to be found and cited by AI, rather than just ranked by classic search. Don’t get lost in the terminology; focus on the practices.
What LLMO looks like in practice
- Answer-first content — state the answer clearly and early so a model can extract it.
- Clean, extractable structure — short sentences, headings, lists and tables.
- Evidence and specifics — data and facts get cited; fluff doesn’t.
- Machine-readable signals — valid structured data and an llms.txt file that maps your best content.
- Crawlability for AI bots — primary content in the HTML, and citation-capable crawlers allowed in robots.txt.
Does LLMO replace SEO?
No — it extends it. The technical foundation SEO cares about (crawlability, site health, structured data) is exactly what LLMs rely on too. LLMO simply adds emphasis on clarity, evidence and machine-readability, and broadens your target from Google’s ranking to a spread of AI surfaces.
Tip: Start with your best-performing pages. Rewrite their opening so the core answer comes first, and you’ve done the single highest-impact LLMO task with almost no risk.
The machine-readable layer
Beyond the writing, give AI a clean map of your site. An llms.txt file points models at the content you most want cited, and valid structured data helps them understand your entities.
Frequently asked questions
What is LLMO?
LLMO, or LLM optimization, is optimising content so large language models like ChatGPT and Gemini can read, understand and cite it — a companion to classic SEO.
What’s the difference between LLMO, GEO and AEO?
Very little. All three describe optimising content to be found and cited by AI engines rather than just ranked by search. Focus on the practices, not the labels.
How do I start with LLMO?
Lead your key pages with a direct answer, use clean extractable structure, back claims with data, and add machine-readable signals like structured data and llms.txt.