SEO & AI Search glossary

LLM (large language model)

Large Language Model — an AI system trained on vast amounts of text that generates answers in natural language. ChatGPT, Gemini, Claude and Perplexity are all built on LLMs.

Why it matters

What it changes in practice

LLMs have become a new entry point to information about products and services. Customers increasingly ask an assistant “which store do you recommend” instead of browsing Google results. If the model doesn't know your brand or describes it incorrectly, you lose sales in a channel that no classic SEO report shows.

What to do about it

Concrete steps

Keep your brand description consistent and unambiguous across the web — models learn from many sources at once
Build presence where models draw their knowledge from: industry sites, directories, reviews
Regularly check what AI assistants say when asked about your category

Related terms

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LLM (large language model)

What it changes in practice

Concrete steps

See also

AI Mode in Google

Structured data (schema.org)

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