Marketrix AI published a study expanding twelve persona types into 10,284 individual participants.

Marketrix is simulated user research. Companies run user studies, conjoint, pricing tests, and A/B tests against AI personas that behave like their real customers, before touching a single real user. Instead of recruiting people, scheduling sessions, and waiting weeks for a handful of data points, teams get research-grade signal in hours. The personas are grounded in real interviews, not imagined by a language model. Our AI Interviewer talks to real people, for example real CFOs to anchor a CFO persona, and our agents run in real browsers against the live product, so we capture behaviour: where users drop off, what confuses them, what they never find.