How much cognitive space a brand occupies in a model's memory — how readily and prominently it recalls the brand unprompted.
Brand authority, in the AI sense, is how much space a brand occupies in a model's parametric memory — how readily, and how prominently, the model brings it up. When we asked Gemini to "name 100 brands at random" 200,000 times, the output was anything but random: Google, Microsoft and Nike appeared in nearly every run while obscure brands surfaced once. That non-uniformity is the signal.
Our AI Brand Authority Index turns this into a score. We build a directed association graph across 2.9 million brand nodes and run Personalized PageRank with seed-weighted teleportation, where brands recalled most often and earliest get more weight. The result ranks brands by their pull inside the model's memory.
This is the deeper layer beneath AI visibility: not whether you're cited on one query, but how embedded you are overall. It's measured through associative embeddedness and is the backbone of our AI Rank framework.
