
Google is expanding AI Max testing and planning tools. Starting in September, advertisers will be able to A/B test different budgets and ROI targets across multiple Search campaigns, while AI Max experiments now support brand and location controls. Performance Planner can also apply recommended bidding and budget changes directly to campaigns.
The core AI Max experiment feature itself isn’t new it was already reported in August 2025 and first surfaced by Dario Zannoni.



