AI visibility, measured by category

The VIBEAU
Index

Who does AI recommend when a shopper asks? We ask ChatGPT, Claude, Gemini, Perplexity and Grok the same real questions, several times, and report what they answer.

Editions

One category at a time

Index No. 01

Facial Sunscreen

United States · September 2026

The consensus AI sunscreen is a brand most shoppers have never seen advertised.

EltaMD is named in 42% of answers and named first in one out of five, on every engine. Dermatologist and pharmacy brands take 40% of all mentions. Independent brands take 6%. Legacy prestige houses are close to absent: Estée Lauder was not named once in 735 answers.

735answers5engines49prompts × 378brands named
Read the findings →

Index No. 02

Next category in October

How the Index works

The same question, asked properly

01

Real questions, no brand names

Each edition uses about fifty prompts written the way shoppers actually ask: by concern, by skin type, by price, by myth. No prompt names a brand, so nothing in the question favors an answer.

02

Five engines, three runs each

ChatGPT, Claude, Gemini, Perplexity and Grok, each asked every prompt three times in a fresh session. Running once reports noise. Running three times shows what is stable.

03

Counted, then published

Every answer is matched against a brand list of over a hundred names and product lines. We report mention rates, first mentions, and the sites the engines cited. The method is published with every edition.

Monthly

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One email when a new category is published. Nothing else.