AI Visibility Index · by Found by AIFree scan  ·  Cheat sheet  ·  Pricing

The AI visibility glossary

Every term in generative engine optimisation, defined in one or two plain sentences — the way an engine can lift them.

Generative Engine Optimization (GEO)

Making a business visible and citable to AI answer engines (ChatGPT, Claude, Perplexity, Google's AI) — the successor discipline to SEO. Where SEO targets ranked links, GEO targets being named in the answer itself. Full framework →

AI visibility

Whether AI engines actually name your business when a customer asks a buying question. Measured, not estimated — an engine either says your name or it doesn't. Check yours free →

AI readiness

How well your site and entity are built for AI to find, trust and cite you: crawler access, structured data, quotable content, independent mentions. You can be ready but not yet visible — readiness is the lever that earns visibility.

Answer engine

An AI system that answers questions directly (ChatGPT, Claude, Perplexity, Google's AI Overviews) instead of returning links. Answer engines name two or three businesses, not ten blue links — you're one of them or you're invisible.

AI Overviews

Google's AI-generated answer box above the traditional results. It absorbs clicks that used to go to websites; being cited inside it is the new position one.

llms.txt

A machine-readable summary of a site published at /llms.txt for AI agents and tools. A low-effort completeness signal — the major AI search engines don't rely on it yet.

AI crawlers

The bots engines use to read the web: GPTBot (OpenAI), ClaudeBot (Anthropic), PerplexityBot, Google-Extended. If robots.txt or a firewall blocks them, those engines can't read or cite you at all.

Entity

The machine-readable identity of a business — Wikidata, Google's Knowledge Graph, a government registry (ABN), consistent schema. Engines recommend entities they can resolve and trust; no entity anchor means they hedge and name someone else.

Brand mentions

How often independent websites name your business. The single strongest correlate of AI recommendations — engines trust what OTHER sites say about you far more than your own copy.

Citations

The sources an AI answer references. Every citation of a directory, review site or article naming you is a vote; the citation game plan in a report lists the exact sources AI trusts in your niche.

E-E-A-T

Experience, Expertise, Authoritativeness, Trust — the credential signals (About page, named people, reviews, track record) an engine weighs before putting its name behind a recommendation.

Schema (JSON-LD)

Structured data that states your business facts — name, location, services, hours — in a format AI parses without guessing. Organization/LocalBusiness markup is how a model confirms what you are before it recommends you.

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Method. Found by AI asks ChatGPT, Claude, Perplexity and Google's AI the questions real buyers ask for each category, then measures which businesses the engines actually name. Scores are 0–100 point-in-time measurements; the index re-scans and grows automatically. Businesses listed here were selected and measured by us from public directories — scan your own site free to see where you'd rank. Queries and methodology are open: github.com/techhorizonlabs.