5W AI Visibility Index
5W ranks how the world's leading brands get cited across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews.
5W is the AI Communications Firm and publisher of the 5W AI Visibility Index series. Through a dedicated Generative Engine Optimization (GEO) practice, 5W helps the world's leading brands earn citation authority across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews — alongside the consumer, corporate, crisis, healthcare, technology, sports, lifestyle, and public affairs work that has made 5W a Top U.S. PR Agency by O'Dwyer's.
Category Indexes
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2026 Consumer Brand Series
The 2026 research series is live.
Read the nine-volume 5W AI Visibility Index series covering pet, video games, longevity, menopause, mental health, cannabis, EV, pickleball, and watches.
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The flagship reports
Trust Indexes
How AI engines describe risk.
5W scores which brands AI engines recommend, hedge on, or warn against in categories where trust is the buying decision.
Special Studies & Audits
Deep-dive research and audits.
One-off investigations across creators, culture, video, hallucination risk, and premium wealth answers.
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Weekly takes on brand, reputation, and AI visibility from the 5WPR team.
About 5W
The AI Communications Firm.
5W is the AI Communications Firm, building brand authority across the platforms where decisions now happen — ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews — alongside earned media, digital, and influencer channels. 5W combines public relations, digital marketing, Generative Engine Optimization (GEO), and proprietary AI visibility research to help clients measure and grow their presence in AI-driven buyer research.
Founded in 2003, 5W is recognized as a Top U.S. PR Agency by O'Dwyer's, named Agency of the Year in the American Business Awards®, honored as a 2026 Top Place to Work in Communications by Ragan, and named to Digiday's WorkLife Employer of the Year list.
5W serves clients across B2C sectors — Beauty & Fashion, Consumer Brands, Entertainment, Food & Beverage, Health & Wellness, Travel & Hospitality, Technology, and Nonprofit — and B2B specialties including Corporate Communications, Reputation Management, Public Affairs, Crisis Communications, and Digital Marketing across Social, Influencer, Paid Media, GEO, and SEO.
FAQ
Frequently Asked Questions
What is the 5W AI Visibility Index Series?
The 5W AI Visibility Index Series is a research franchise published by 5W, the AI Communications Firm. Each Index ranks the top brands in a single consumer or B2B category by citation share across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. The series is the most extensive body of multi-engine Generative Engine Optimization (GEO) research produced by a U.S. communications firm.
How does the AI Visibility Index measure brand citations?
5W runs a standardized prompt set across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews, captures every brand mentioned in generated answers, and calculates each brand's share of total citations within the category. Each Index publishes its methodology and version date.
Which AI engines does the Index track?
The 5W AI Visibility Index tracks five engines: ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. These represent the dominant generative answer surfaces shaping consumer and B2B discovery in 2026.
What categories does the Index Series cover?
The Series covers 39+ categories including Pickleball, Crypto & Digital Assets, Beauty, Banking, Venture Capital, Defense & Aerospace, AI Companies, Cannabis, Wedding Industry, HVAC & Plumbing, Pool & Spa, Funeral Services, Supplements, Online Universities, Restaurants & Chains, Pet Industry, Cybersecurity, Health Insurance, and Veterinary. A new category Index publishes monthly.
How often does 5W publish new Indexes?
A new category Index publishes monthly. Existing Indexes are refreshed on a published cadence — AI engine citation behavior can shift month to month, and the version date on each report reflects the most recent measurement.
What is Generative Engine Optimization (GEO)?
Generative Engine Optimization (GEO) is the practice of earning citation authority inside AI answer engines — ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. GEO combines schema, structured content, earned media, and source-mix engineering to make a brand readable, trustable, and citable by large language models. 5W operates a dedicated GEO practice for B2C and B2B clients.
How is GEO different from SEO?
SEO optimizes for ranked links inside a Google search results page. GEO optimizes for brand inclusion inside the AI-generated answer itself. Different ranking signals, different citation surfaces, different competitive sets. More than a third of consumers now begin product research with AI, not Google — making citation share inside AI answers a separate channel from organic search.
Can 5W build a custom AI Visibility Index for my brand or category?
Yes. 5W builds custom, branded, or co-branded AI Visibility Indexes for clients across consumer and B2B categories. The same methodology used in the published Index Series is applied to a client-defined competitive set, geography, or product line.
What is a GEO audit and what does it deliver?
A 5W GEO audit benchmarks a brand's current citation share across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews against a defined competitive set, identifies citation gaps and source-mix weaknesses, and delivers a prioritized GEO roadmap. Audits deliver in 10 business days.
Why does citation share matter for marketing and PR?
Brands cited inside AI-generated answers enter the buyer's consideration set earlier. Brands invisible to AI engines are excluded from the earliest stage of buyer research — and modern consumers increasingly begin category discovery with AI, not search engines.
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