83.45%
Pairwise creative agreement
Share of within-product creative pairs (701 of 840) on the CreativeRanking development cohort where the outcome-trained comparator agreed with the observed CTR ordering. The earlier prompt-only panel scored 55.24% and 56.43% on the same cohort, and a historical config of that panel is the source of the 70.3% figure quoted elsewhere.
Boundary: A retrospective result on a development cohort, not a fresh holdout. The ranking cleared all three control banks; click-capture cleared one of three, so the frozen success gate is not fully passed. It is not a conversion-rate, CPA, ROAS, or exact-winner guarantee.