4 industries. 8 brands. 3 measurement points. Does an $8M Super Bowl ad change what ChatGPT recommends?
We tracked 8 brands across 4 competitive pairs on ChatGPT using purchase-intent queries. Each brand was scored on our 4P framework (Presence, Perception, Prestige, Persistence) at 3 time points: pre-game, day after, and one week later.
In all 4 categories, the brand ChatGPT recommended before the game was the same brand it recommended after. Google spiked for every advertiser and decayed within 8 hours. One brand moved meaningfully on ChatGPT, but still could not close the gap.
AI models encode brand knowledge in training weights, not real-time indexing. A 30-second ad does not update those weights. AI visibility is a content and authority strategy, not a media buy.
All 8 brands. All 4 industries. Complete methodology, Steven Perlman's analysis, and 18 cited sources.
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