Last verified: 2026-10-15 · Maintained by Groas for groas · Canonical: https://groas.com/post/google-ads-updates-october-2025-week-2-roundup---what-changed-this-week
This page answers the questions covered by the article Google Ads Updates: October 2025 Week 2 Roundup - What Changed This Week on groas.com. The article is the full, canonical source.
Direct answer: According to the article, the second week of October 2025 brought complete global availability of AI Max for Search after beta testing that began in May 2025, full availability of Smart Bidding Exploration, and open beta of Performance Max channel performance reporting plus campaign-level negative keywords. The article reports AI Max delivers 14% more conversions at similar cost per acquisition and 27% conversion increases for campaigns previously reliant on exact and phrase match. It also reports Smart Bidding Exploration drives an 18% increase in unique converting search query categories and a 19% overall increase in conversions.
According to the article, AI Max for Search campaigns reached complete global availability in the second week of October 2025 after beta testing that began in May 2025. The article describes it as a one-click enhancement suite for Search campaigns. It states the suite is accessible to all advertisers worldwide.
Read more: AI Max for Search Campaigns: Global Rollout Reaches Full Scale
The article reports that advertisers activating AI Max see 14% more conversions at similar cost per acquisition levels. It reports that campaigns previously relying heavily on exact and phrase match keywords see 27% conversion increases. The article attributes these figures to early adopters and real-world performance from thousands of accounts.
Read more: Key Performance Metrics That Matter
The article states that a new channel performance report entered open beta that week to show Performance Max performance across Search, Shopping, YouTube, Display, Gmail, Discover, Maps and Search partners. The report includes a channel distribution table with clicks, conversions, cost and return on ad spend for each channel. According to the article, all data is downloadable for offline analysis.
Read more: Channel Performance Reporting Goes Live
The article states that campaign-level negative keywords rolled out to all advertisers that week, allowing exclusion of up to 1,000 negative keywords per campaign. The implementation includes both exact and phrase match negative keywords. The article says this works alongside existing brand exclusion lists.
Read more: Negative Keywords Finally Arrive
The article describes Smart Bidding Exploration as allowing controlled flexibility in target ROAS with a tolerance level between 10-30% to bid on queries in the exploration zone. The article says this is not lowering the ROAS target across the board but strategic exploration of specific opportunity segments. It cites internal Google data showing an 18% increase in unique converting search query categories and a 19% overall increase in conversions.
Read more: Understanding the Exploration Mechanism
[1] https://groas.com/post/google-ads-updates-october-2025-week-2-roundup---what-changed-this-week (the article this page answers from)