If you manage Google Ads Search campaigns, some of them may already look different than they did a month ago. Starting September 1, 2026, Google began automatically upgrading two specific types of Search campaigns — those using campaign-level broad match and those using legacy Automatically Created Assets — to a new optimization layer called AI Max. The migration runs through the end of September, and for most advertisers it’s happening whether they asked for it or not.
This isn’t a new campaign type you have to build from scratch. It’s closer to a settings change with real consequences: new keyword-matching behavior, new reporting fields, and at least one data-pipeline issue that can silently break your tracking if you don’t know to look for it. Here’s what’s actually changing, and what to check before the month is out.
Key Takeaways
- Google is auto-upgrading Search campaigns using campaign-level broad match or legacy Automatically Created Assets (ACA) to AI Max between September 1 and September 30, 2026.
- AI Max isn’t a new campaign type — Google describes it as an optimization layer you activate inside your existing Search campaigns, expanding keyword matching and automating ad asset creation.
- Google froze the creation of new campaigns using the old broad match and ACA setups on August 3, 2026, meaning AI Max is now the default path forward for that functionality.
- Dynamic Search Ads campaigns are explicitly excluded from this round — their migration is scheduled separately for February 2027.
- A known issue with AI Max’s “final URL expansion” can serve a different landing page than the one configured in your campaign, which silently breaks UTM parsing and page-level reporting unless your analytics reads the served URL rather than the configured one.
What AI Max Actually Is
Google’s own framing matters here: AI Max is not a standalone campaign type sitting alongside Search, Performance Max, or Demand Gen. It’s an optimization layer that lives inside an existing Search campaign, and its job is to expand how that campaign finds and matches search queries. In practice, that means broader, more automated keyword matching — closer to how broad match already behaves, but with more of the decision-making handed to Google’s models — plus automated generation of ad assets like headlines and descriptions tailored to each query.
That framing explains why Google is comfortable auto-upgrading existing campaigns rather than asking advertisers to opt in from scratch: from Google’s perspective, this is closer to a feature update than a new product. Advertisers who built campaign strategy around the specific behavior of broad match or ACA may see that behavior shift under them without a clear announcement inside the interface.
The September 2026 Migration Timeline
| Date | What Happens |
|---|---|
| August 3, 2026 | Google stops allowing creation of new campaign-level broad match campaigns and legacy Automatically Created Assets (ACA) campaigns. |
| September 1–30, 2026 | Existing campaigns using those two setups are automatically upgraded to AI Max on a rolling basis. |
| February 2027 | Dynamic Search Ads campaigns — excluded from this round — begin a separate migration to AI Max. |
Only two campaign configurations are affected in September: Search campaigns already using campaign-level broad match settings, and those using the older Automatically Created Assets feature. If your account doesn’t use either setting, your campaigns aren’t part of this specific wave — though given the August 3 freeze on creating new campaigns with the old setup, AI Max is effectively the only forward path for that functionality going forward.
New Reporting Fields You’ll See in the Interface and API
Google is shipping three new reporting elements alongside the migration, and all three are worth checking even if you manage accounts manually rather than through the API:
- A new segment —
segments.search_term_match_source— that distinguishes traffic from advertiser-provided keywords, AI Max’s broad-match expansion, and fully keywordless matching. This is the clearest way to see how much of your traffic is coming from Google’s expanded matching versus your original keyword list. - Two new views —
ai_max_search_term_ad_combination_viewandexpanded_landing_page_view— that give more granular visibility into which search terms triggered which ad combinations, and which landing pages AI Max actually sent traffic to. - A campaign-level flag —
campaign.ai_max_setting.enable_ai_max— that tells you definitively whether a given campaign has been upgraded, rather than guessing from behavior changes.
The Pipeline Issue Worth Checking Before It Costs You Data
The most consequential change isn’t a feature — it’s a side effect. AI Max’s “final URL expansion” can send a click to a different landing page than the one configured in your ad, choosing whichever page its model believes best matches the search query. That’s a deliberate design choice meant to improve relevance. The problem is what it does to measurement: if your analytics setup, UTM parsing, or CMS page-grouping logic is keyed off the configured URL rather than the URL a visitor actually landed on, this expansion can silently break those joins. No error is thrown — the numbers simply stop lining up, and it’s easy to misread the result as a traffic-quality problem rather than a tracking problem.
The fix isn’t complicated once you know to look for it: update any pipeline, script, or reporting dashboard that references landing page URLs to read the served URL — available through the new expanded_landing_page_view — rather than the URL you originally configured in the ad.
What to Decide Before September Ends
- Check whether your affected campaigns have already migrated. Use the new
campaign.ai_max_setting.enable_ai_maxflag, or check the campaign settings panel directly, rather than assuming migration hasn’t happened yet. - Decide on opt-outs on a per-feature basis. Google’s opt-out for AI Max features isn’t all-or-nothing — you can disable specific expansions (like broad-match query expansion or automated asset generation) while keeping others active. Review each feature rather than treating this as a single on/off switch.
- Update any pipeline or dashboard that keys off landing page URLs to pull from
expanded_landing_page_viewinstead of the originally configured URL, before a month of reporting gaps accumulates. - Re-check attribution and conversion data for any campaign that migrated mid-month, since a shift in mid-September reporting could reflect the AI Max transition rather than an actual change in campaign performance.
Part of a Bigger Shift in How Search Marketing Works
AI Max is one piece of a broader pattern that’s been reshaping search marketing all year: platforms are increasingly making automated, AI-driven decisions on behalf of advertisers and publishers alike, often with limited visibility into exactly how those decisions get made. It’s the advertiser-side mirror of what’s already happened on the content side, where AI Overviews have measurably reshaped organic click-through rates (see our breakdown: Four Studies, Four Numbers: What AI Overviews Actually Did to Your Clicks). In both cases, the practical lesson for marketers is the same: keep closer tabs on the segmented, granular data these platforms now expose, because the headline numbers alone increasingly obscure what’s actually happening underneath.
FAQ
Is AI Max a new Google Ads campaign type?
No. Google describes it as an optimization layer activated within existing Search campaigns, not a separate campaign type like Performance Max or Demand Gen.
Will my campaigns be upgraded automatically?
Only if they currently use campaign-level broad match settings or legacy Automatically Created Assets. Google is upgrading those two configurations automatically between September 1 and September 30, 2026.
Can I opt out of AI Max?
Yes, but the opt-out works on a per-feature basis rather than as a single switch — you can disable specific AI Max features while keeping others enabled.
Are Dynamic Search Ads campaigns affected this month?
No. Google explicitly excluded Dynamic Search Ads from the September 2026 migration; that campaign type is scheduled for a separate move to AI Max in February 2027.
Why did my landing page reporting suddenly look off?
AI Max’s final URL expansion can send traffic to a different landing page than the one configured in your ad. If your reporting pipeline reads the configured URL instead of the actual served URL, this can silently break page-level tracking without throwing an error.
The Bottom Line
AI Max’s September rollout is narrower than it might sound — it only touches campaigns already using campaign-level broad match or legacy Automatically Created Assets, and Dynamic Search Ads are safe until 2027. But for the accounts it does touch, the changes are real: different keyword-matching behavior, a landing-page expansion feature that can quietly break tracking, and new reporting fields that are worth wiring into your dashboards now rather than after a month of unexplained reporting gaps. Checking which of your campaigns have already migrated — and updating your tracking to read served URLs rather than configured ones — is the highest-leverage five minutes you can spend on this before September closes out.
