The AI 100 is WhereDoIRank's name for the flagship cross-category board: the brands with the strongest overall AI visibility across every tracked category, ranked like an index of listed companies.
Category rankings answer "who wins CRM?"; The AI 100 answers "who wins AI recommendation overall?" Those are the brands that models name first, in the most categories, most consistently. Think of it as the market-cap leaderboard of AI visibility.
Like any index, membership is the story: entering The AI 100 means multiple models recommend you across multiple buying contexts, and falling out means the answers moved on.
What it takes to enter
Breadth first: being named across several unrelated categories rather than dominating one. Then consistency, meaning named by more than one model and on more than one close. A brand that wins a single category outright can still sit outside the index, because one category is one buying context.
This is deliberately harder than a category rank. Category leadership can follow from a niche being small; index membership cannot.
Why an index reads better than a single board
One category is one sample of one question. An index aggregates across contexts, which cancels the phrasing sensitivity that makes any individual board noisy, and surfaces the brands models reach for by default rather than the ones that happen to fit one query well.
Membership changes are the story worth watching: entering means several models recommend you across several contexts, and dropping out means the answers moved on somewhere you were not watching.