GEO Glossary
Plain-English definitions of the generative engine optimization and AI-visibility terms you'll run into — from GEO and AEO to AI crawlers, llms.txt and share of voice.
AI Crawler
An automated bot that fetches web pages on behalf of an AI product — to train a model, index pages, or read a page live for a user.
Read definition →AI Overview
Google's AI-generated answer shown at the top of some search results, which summarizes and cites sources instead of just listing links.
Read definition →AI Visibility
How often and how favorably AI engines name your brand when people ask questions in your category — the AI-era equivalent of search ranking.
Read definition →Answer Engine Optimization (AEO)
Optimizing your content to be the answer that AI engines and featured snippets give, rather than a link in a list.
Read definition →Buying-Intent Prompt
A question a potential customer asks an AI engine when they're close to choosing — the prompts where being recommended matters most.
Read definition →Citability
How easy a page is for an AI engine to quote and attribute — driven by clear answers, structure, schema and freshness.
Read definition →Crawlability
Whether bots can fetch, read and index your pages. If AI can't crawl you, it can't cite you.
Read definition →Generative Engine Optimization (GEO)
The practice of getting your brand recommended and cited by AI answer engines like ChatGPT, Perplexity and Gemini.
Read definition →GPTBot
OpenAI's web crawler that gathers content to train and improve its models. Controlled via robots.txt.
Read definition →Grounding
When an AI engine bases its answer on retrieved sources rather than only its training data — the mechanism that produces citations.
Read definition →llms.txt
A markdown file at your site root that tells AI engines what your site is and which pages matter most.
Read definition →Presence Rate
Of all the relevant prompts you track, the share of AI answers that name your brand at all.
Read definition →Retrieval-Augmented Generation (RAG)
A technique where an AI model retrieves relevant documents at answer time and generates its response from them — the basis for cited AI answers.
Read definition →robots.txt
A file at your site root that tells crawlers — including AI crawlers — which parts of your site they may access.
Read definition →Share of Voice (AI)
How often AI names your brand versus each competitor across the prompts you track.
Read definition →Structured Data (Schema)
Machine-readable markup — usually JSON-LD — that describes your content so engines parse and attribute it precisely.
Read definition →New to all this? The GEO Guide walks through it end to end.
Run a free AI visibility check →
Citenzo