AI Max for Search: What Agency Buyers Need Before the Auto-Upgrade

Google is moving Search campaigns onto AI Max, and for some accounts the switch happens whether or not anyone on your team asked for it. If you pay an agency to run Google Ads, you need to know who decides what AI Max does in your account before it starts spending your budget differently. This AI Max for Search Google Ads agency guide covers what Google has said, what to check in your account, and what to ask the people running it.

AI Max for Search is not a new campaign type. Google calls it an optimization layer within existing Search campaigns, and some campaigns are being upgraded to it automatically. Before that happens, ask your agency three things: what will change, who is watching it, and how results will be measured against your current baseline.

What AI Max for Search Actually Is

Because AI Max is a layer and not a campaign type, you will not find a new campaign in your account to review. It changes how campaigns you already have behave. That makes it easy to miss. Nothing new shows up in the campaign list, but the way your ads match searches and pick text and pages can shift.

Google's setup documentation also says new Search campaigns have the AI Max feature turned on by default. If anyone builds a new Search campaign for you this quarter, check the settings before you assume you know how it will run.

The settings Google groups under AI Max include broader search term matching, ad text customization and final URL expansion. In plain terms, Google gets more say over which searches trigger your ads, what the ad says, and which page the click lands on. Those are the three places where a lead-generation account can go off course quietly.

If you want a second set of eyes on your current setup, talk to us before the upgrade reaches your campaigns.

What Google Has Said About the Auto-Upgrade Timeline

Google updated the timeline in an April 15, 2026 announcement. There are two waves:

• Dynamic Search Ads (DSA): Google says the DSA sunset and auto-upgrade "will begin in February 2027."
• Automatically Created Assets and campaign-level broad match: Google says these campaigns "will continue to be auto-upgraded starting in September 2026."

That second wave is already under way. The first job is to find out which wave, if either, your campaigns sit in. Ask your agency for a list that shows each Search campaign and whether it uses DSA, Automatically Created Assets, a campaign-level broad match setting, or none of those. Google's announcement names only the first three groups, so confirm with your agency what applies to the rest.

What Google Says AI Max Delivers, and How to Test It

Google's headline claim is that advertisers who activate AI Max in Search campaigns will typically see 14% more conversions or conversion value at a similar CPA or ROAS. Google bases that on its own internal data from 2025, for non-Retail advertisers.

Treat that as a vendor's claim, not a forecast for your account. "Typically" means an average across many accounts. Yours can land above or below it, and Google is not the party who pays if it lands below.

Our rule for any automation change is to write down the baseline first. If your agency cannot tell you what conversions, cost per lead and lead quality looked like before the switch, nobody can say afterward whether AI Max helped. Pull lead quality from your CRM, not only from Google's conversion column.

How to Audit Your Account Before AI Max Arrives

Work through these steps with your agency, or in your own account if you manage it yourself.

1. Sort your campaigns into upgrade groups. Mark each Search campaign as DSA, Automatically Created Assets, campaign-level broad match, or none of these.
2. Record a baseline. Export conversions, cost per conversion and conversion value for a period long enough to include your normal ups and downs. Add closed-won or qualified-lead counts from your CRM.
3. Check your budgets. Google says AI Max "won't be effective if campaigns are limited by budget", and that an alert appears when a campaign is budget-limited. Either raise the budget or decide with your agency that you accept the limit.
4. Look for Performance Max overlap. If a query can match both AI Max for Search and Performance Max, Google says the one with the highest Ad Rank will serve. If you run both, agree in advance how you will read results, because you cannot fully control which one wins a given search.
5. Audit what counts as a conversion. Automation chases whatever you tell it to count. If junk form fills or accidental calls are counted, wider matching will find more of them. If your account already gets clicks that never become leads, fix that match between keyword, ad promise and page before you widen anything.
6. Name an owner. Decide who reviews search terms and landing pages after the switch, how often, and who can roll a change back.

Questions to Ask a Google Ads Agency About AI Max

Use these on a current agency or one you are vetting:

• Which of our campaigns are in Google's upgrade path, and in which wave?
• What choices do we have on timing, and what do you recommend for each campaign?
• What baseline are you comparing against, and where is it recorded?
• Which conversion actions is the account optimizing toward, and do they match leads that become revenue?
• Who reviews search terms and landing pages after the switch, and how often?
• What result would make you roll a change back?
• What will you report that is not Google's own dashboard summary?

Our position is that AI can run an ad campaign, until Google changes something, and someone still has to watch it. An agency that answers "Google handles it" is not describing management. You are paying for judgment about when to trust the automation and when to override it.

Want a Google Ads account where someone is watching the automation? Tell us what you're running and we'll tell you what we'd check first.

A Call We Made: Ignore the Optimization Score

Open a Google Ads account and one of the first numbers you see is the optimization score, out of 100. It is easy to treat it as the account's report card. Recently we talked two business owners out of doing exactly that.

The score goes up as you accept Google's own recommendations. In our experience, a lot of those recommendations come down to spending more. So we do not manage accounts by it.

The number we read is quality score, out of 10, which Google shows for each keyword. It reflects whether the keyword, the ad and the landing page match what the searcher wanted. A low one usually means you are paying more per click than you need to, for traffic that converts worse. Neither owner had found that column in their account, so we are walking them through it on our next call.

The same test applies to AI Max. If a recommendation ever pushes you toward a setting like it, ask what the number or prompt actually measures and whether that measure is tied to your money.

Common Mistakes Agency Buyers Make With AI Max

• No owner. Everyone assumes someone else is watching the upgrade. Name a person.
• Using Google's 14% as your forecast. It is an average from Google's internal data, not a promise for your account.
• Turning it on with no baseline. Without a record of before, you cannot judge after.
• Widening matching on a leaky account. If lead quality is already poor, more reach usually means more poor leads. Fix tracking and the landing page match first.
• Ignoring budget limits. Google says AI Max is not effective on budget-limited campaigns, so a capped campaign is a poor place to test it.
• Changing several things at once. If you change bids, pages and AI Max settings in the same week, you will not know which one moved the numbers.
• Judging results too early. Wait until the campaign has enough conversions to read, and compare it with your baseline, not with a hunch.

When to Bring in Help

If your account is small and simple, you may be able to do the audit above yourself. If you have several Search campaigns, a mix of DSA and Performance Max, or a CRM that does not feed back into Google Ads, a second opinion before the upgrade is cheap protection.

Logic Inbound runs Google Ads management for operators who need pipeline, not just a cleaner dashboard. What we take on depends on the account, so the first step is always to look at what you are running and what you are measuring.

Get Your Account Ready Before Google Upgrades It

If you are a business owner or marketing lead with Search campaigns that may be in Google's upgrade path, we can help you sort them into waves, set a baseline and decide where AI Max belongs. Contact Logic Inbound and tell us which campaigns you are running. We will tell you what we would check first.