Google is rewriting your search campaigns this month

Broad match and auto-created-asset campaigns are being auto-migrated to AI Max through September 30, and it is now the default for every new Search campaign. This is not a feature you evaluate at your leisure, it is a rewrite of your campaigns on a deadline. Google claims roughly 7% more conversions at similar CPA and ROAS, and that claim deserves a second read.

What does AI Max actually change?

AI Max expands query matching and rewrites your ad copy. Those are the two changes that matter, and both are about control. Matching decides which searches trigger your ads. Creative decides what searchers see. AI Max takes a bigger role in both: broader matching that reaches searches your keywords would not have caught, and automated creative that assembles and rewrites your ads.

That is the trade, stated plainly: broader reach and automated creative in exchange for less control over which queries you show for and what your ads say. The advertiser's job shifts from pulling levers to auditing outcomes.

What does 7% more conversions at similar CPA really mean?

It does not say cheaper conversions. Similar CPA means the cost per conversion stays about where it was, which means the extra conversions cost roughly the same as the ones you already had. This is growth, not efficiency: more conversions because more spend is finding more searches, at roughly the same price per conversion.

Whether that is good news depends on your business. If you have budget headroom and want volume at your current efficiency, 7% more conversions at a similar CPA is a genuine win. If your budget is fixed and efficiency is already tight, ask where the new volume comes from and whether it is as valuable. Similar CPA is an average, and averages hide the mix.

Remember who is making the claim. Broader matching spends more of your budget, so the 7% figure, like the 26% incremental ROAS claim for expanded Customer Match, is a directional signal, not a guarantee. Your number will be your number, and the only way to know it is to measure it.

What oversight does it need?

Automation without oversight is just spending faster. Make the search term report your most-read screen, because it shows what AI Max actually matched you to. Review it weekly, since drift compounds: a few irrelevant queries this week become a permanent budget allocation if nobody looks.

Watch relevance, not just volume. Sort the search term report by spend and read the top like a hawk. The most expensive terms should be the most relevant terms, and when they are not, you have a problem the averages will hide.

Monitor spend shifts campaign by campaign through the transition. Budgets will move as matching expands, which is the mechanism, not a malfunction. If spend migrates toward queries you would never have bid on, act on it with a fast negative keyword process.

Keep the honest upside in view

AI Max may find queries you genuinely missed. Human keyword research has blind spots, especially for long-tail and emerging search behavior, and broader matching can surface converting searches you never thought to bid on. Give it a learning period, then judge it on your numbers, not Google's.

A learning period is not a blank check. Learning means testing, and testing means some of your budget goes to queries that do not convert. That is the price of the 7%, and it is fine as long as you are watching the search term report and cutting what does not earn its place.

Have you audited your search terms since the migration?

Data over opinions.

How we can help

We as your partner manage the AI Max transition for you. We inventory which of your search campaigns are migrating, record your cost per lead and return before anything changes, then audit your search terms every week and cut spend on irrelevant queries first.

We also track every lead and sale back to the ad that drove it, so you see exactly what the migration changed in customers and dollars, not platform jargon.