Glossary

Large Language Model (LLM)

A large language model is an AI trained on vast amounts of text to understand and generate human language, powering tools like ChatGPT and Claude.

3 min read · Published August 8, 2026

LLM at a glance

A large language model (LLM) is an AI system trained on huge amounts of text so it can answer questions, write, and summarise in natural language. LLMs power assistants like ChatGPT, Claude, Gemini, and Perplexity. When these tools answer a question, they often cite or paraphrase content from websites they consider trustworthy.

Why LLMs matter for your website

A growing share of people now ask an LLM instead of searching Google, so being understood and cited by these models is a new channel. Content that is clear, well-structured, factual, and corroborated across sources is more likely to be surfaced. Optimising for this is called GEO, Generative Engine Optimization, the AI-era companion to SEO.

FAQ

How do LLMs choose which sites to cite?

They favour content that is clear, structured, factual, and consistent with what other trusted sources say, so consensus and authority matter as much as good writing.

How do you get cited by an LLM?

Publish self-contained, well-structured answers, add structured data, keep facts accurate, and build authority and mentions across the wider web.

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