Test-retest reliability, Cronbach’s alpha, KL divergence, MAE and RMSE, calibration curves, ICC. The six metrics, the honest thresholds, and the six-step evaluation workflow any insights team can use to pressure-test a synthetic respondent panel against a real human benchmark in one sprint.

A senior insights leader cannot evaluate an AI consumer panel by the demo. They have to interrogate the methodology. This 2026 guide shows the five building blocks of a credible synthetic panel, the quality signals to demand from any vendor, and how to scope a brand-positioning study with parity to real panels.