Is Google's AI Max for Search a Separate Campaign Type From Performance Max?

No. AI Max for Search is a feature layer added on top of existing Search campaigns, not a standalone campaign type the way Performance Max is. It expands keyword matching through broad match and Google's keywordless technology, pulling in keywords, ads, landing pages, and inferred intent to find additional queries existing keywords wouldn't have caught.

How It Differs From Performance Max

Performance Max is its own campaign type, built and run separately from Search. AI Max for Search instead sits inside a Search campaign that already exists, layering expanded matching on top of it rather than replacing the campaign structure.

What It Actually Changes About Matching

• Broad match treatment: practitioner reporting describes AI Max as treating existing keywords as broad match, regardless of which match type was originally assigned, once the feature is active on that campaign.
• Keywordless technology: beyond broad match expansion, AI Max can also serve ads on queries with no keyword match at all, inferred instead from ads, landing pages, and account signals.
• Auction priority: an identical exact-match keyword still wins priority in the auction ahead of AI Max matches; below that, phrase match, broad match, and AI Max matches compete together on Ad Rank, according to commentary from Google's Ads Liaison.

The 2026 Rollout Timeline

Google confirmed AI Max for Search moved out of beta in 2026, with Dynamic Search Ads, Automatically Created Assets, and the old campaign-level broad match setting set to auto-upgrade into it. Reporting indicates Google blocked new campaign-level broad match settings and Automatically Created Assets starting August 3, 2026, with a migration window running September 1 through September 30, 2026, and advertisers reportedly had an option to opt out in campaign settings during that window.

Why This Matters for AI Overviews Specifically

Eligibility to appear inside AI Overviews is narrower than general search ad eligibility: only broad match keywords or keywordless targeting can trigger an ad inside the AI Overview response itself. Exact and phrase match keywords can still trigger ads shown above or below the AI Overview, but not within it. Since AI Max pushes campaigns toward broad-match-style matching by design, enabling it is one of the more direct ways a Search campaign becomes eligible to appear inside Google's AI-generated responses.

What to Check Before Enabling It

• Conversion tracking maturity: broad match plus AI Max needs reliable conversion data to avoid wasting spend on loosely matched queries.
• Search terms report monitoring: since AI Max can serve on inferred intent rather than literal keyword matches, the search terms report becomes more important, not less, for catching irrelevant matches early.
• Account volume: accounts with low search volume may not have enough data for AI Max's matching to perform predictably, which several agencies have flagged as a reason early results were mixed.

Bottom Line

Don't confuse AI Max for Search with Performance Max — it's an expansion layered onto Search campaigns that already exist, not a new campaign type to build from scratch, and as of 2026 it's becoming the default rather than an opt-in extra.

Sources: Google Ads Liaison Ginny Marvin's public comments on AI Max, AI Search eligibility, and the broad-match auction, as reported by TechWyse; trade-press reporting from PPC Land and Search Engine Land on the 2026 AI Max rollout timeline and AI Overview keyword-matching eligibility.