Definition
LLM SEO is an informal umbrella term for making content discoverable and citable by large language model applications — chat assistants, AI search and agents. It covers the same ground as GEO/AEO: allowing AI crawlers, publishing machine-readable structure (JSON-LD, llms.txt), writing evidence-first content, and monitoring how LLM products describe your brand. The term appears in searches like "llm seo tools" and "llm seo meaning"; most practitioners now converge on GEO as the standard name for the discipline. Treat searches for LLM SEO as a naming signal rather than a separate method: the audience asking for it usually wants the same checklist — crawler access, llms.txt, structured data, evidence-first rewriting and answer tracking. The practical difference from classic SEO is where the work lands: instead of optimizing for a ranked list of links, you are optimizing to be retrieved, trusted and quoted inside a single synthesized answer.