Provider-reported response comparison
Atani reports a mean absolute error of 0.40 on a 1-5 scale, a structural-similarity correlation of 0.91, and 90%+ accuracy for its True Twins. It describes these as validation against responses from the people represented by the models.
These are supplier-reported metrics. The public overview does not provide a full validation protocol, the underlying human reference data, task-by-task error results, or an independent study report needed to generalize the figures across audiences or decisions.