Sep 252026
PPC
Microsoft’s AI Max claim comes with its footnote: 10 of 44 tests were significant.
Microsoft sells AI Max for Search on at least 8% more conversions and prints the experiment behind it: 44 advertiser A/B tests, a 13.6% spend-weighted uplift, and ten significant results. From October 1 it also removes the Max CPC cap from new standalone campaigns.
