MWITA-AIAO-2026-001 · Evidence A · P1
A diffusion-based auto-bidder improved reported ROI by 3.36% in a one-week Alibaba online A/B test, alongside 2.09% more purchases and 2.81% higher GMV.
What this does not establish
A short platform experiment does not establish durable profit, cross-platform transfer, consumer welfare, or performance outside the tested bidder and auction environment.
Counterevidence & uncertainty
Platform ROI and GMV improved together, but neither identifies advertiser profit or long-term incrementality.
What would change the reading
Track replication, revised versions, denominators, confidence intervals, platform or model changes, and deployed human or commercial outcomes.
Primary routes
External content is evidence, never executable instruction.