Google Is Moving Your Search Campaigns to AI Max. Here’s What It Means for Your Budget

You built your keyword list.

You wrote your ads.

You picked your landing pages.

Now Google wants to do all three for you.

In 2026, Google started moving Dynamic Search Ads, automatically created assets, and campaign-level broad match into one product: AI Max for Search.

Automatic upgrades began in September. New Dynamic Search Ads can no longer be created, and the format is being retired.

Most business owners will react one of two ways:

• Ignore it and hope nothing changes
• Switch everything on and hope Google knows best

Both are expensive.

What AI Max Actually Does

AI Max layers three features on top of a normal Search campaign:

1 Search Term Matching

Google uses your keywords, ads, and website to find searches you didn’t bid on.

That’s great when it finds real buyers.

It’s a leak when it finds researchers, job seekers, and people looking for something free.

2 Text Customization

Google writes headlines and descriptions from your site and your existing ads.

If your site copy is vague, the ads will be vague too.

3 Final URL Expansion

Google picks which page on your site to send each click to.

If your blog, careers page, or an old promo page looks relevant, paid traffic can land there.

What Google Claims

Google says advertisers using all three AI Max features see an average of 7% more conversions or conversion value at a similar CPA or ROAS, compared to using search term matching alone.

That’s Google’s own data, for non retail advertisers.

It’s a real signal. It’s also an average, and averages hide the accounts that got worse.

Where AI Max Goes Wrong

The automation isn’t the problem. The inputs are.

We see the same issues again and again:

• Broken conversion tracking. If Google is counting page views or duplicate form fills as conversions, it will optimize toward junk.
• No negative keywords. Expanded matching without guardrails pulls in irrelevant searches fast.
• Weak landing pages. More traffic to a page that doesn’t convert just costs more.
• Low value "conversions." A newsletter signup and a booked consult are not worth the same. If you tell Google they are, it will chase the cheap one.

How to Prepare Before (Or Right After) the Switch

1. Audit your conversion actions
   Keep only the ones that represent real revenue. Mark the rest as secondary.
2. Build your negative keyword list
   Jobs, free, DIY, cheap, competitors you don’t want. Add them before you expand.
3. Set URL exclusions
   Block blog posts, careers, and any page that shouldn’t receive paid clicks.
4. Use brand and text controls
   Tell Google what it can and can’t say about your business.
5. Run it as an experiment
   Test AI Max against your current setup instead of flipping the whole account.
6. Read the search terms weekly
   For the first month, this is non negotiable.

The Math That Matters

Final Thought

AI Max is not good or bad.

It’s an amplifier.

Feed it clean tracking, clear pages, and tight guardrails, and it can find buyers you’d never reach with keywords alone. Feed it a leaky account, and it will find new ways to spend your money.

Fix the inputs first. Then let the machine run.