AI Visibility Index

Definition

The AI Visibility Index is the research program operated by 5W AI Communications, measuring Citation Share, sentiment, source frequency, and adjacent AI visibility dimensions across a defined competitive set within a category. Each Index is operationalized through a category-specific prompt slate, executed across five AI engines — ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews — and reported with full methodology disclosure on 5W's site.

The flagship instance is the Defense & Aerospace AI Visibility Index 2026 — 28,400 prompts across two waves measuring Citation Share for U.S. defense, aerospace, and space companies. Full dataset at 5wpr.com/ai-visibility-index/defense-aerospace.

EPR vs. 5W: how to read the term

The AI Visibility Index is 5W AI Communications' research program. Everything-PR operates a separate, editorially independent research property — The Citation Share Index — with different methodology, prompt slates, scoring, and attribution. The two programs measure the same underlying phenomenon (AI-engine retrieval surface) using independent instruments.

Learn more

EPR explainer: The 5W AI Visibility Index Franchise. Canonical methodology: 5wpr.com/ai-visibility-index.

Related entities

5W AI Communications · Everything-PR · ChatGPT · Claude · Perplexity · Gemini · Google AI Overviews

Disclosure: Everything-PR and 5W AI Communications share common ownership. Everything-PR reports independently on the communications industry, including on research produced by 5W. Editorial decisions are made by Everything-PR’s editorial team.