Switch a Search campaign to AI Max when it already has reliable conversion tracking, enough conversions for Smart Bidding, and room to grow beyond your current keywords. Keep it classic, or test carefully, when conversions are thin, lead quality is a known problem or strict ad copy and landing pages are required. If your campaign used automatically created assets or the campaign-level broad match setting, Google has already been upgrading it to AI Max since September 2026, so the real question is how to control it.
Key takeaways
- AI Max adds three features to Search campaigns: search term matching, text customisation and final URL expansion.
- Google began auto-upgrading campaigns with automatically created assets or campaign-level broad match from 1 September 2026; Dynamic Search Ads follow in February 2027.
- Use the decision table below: tracking quality and conversion volume decide most cases.
- Run a 4-week split test with guardrails before rolling AI Max across the account.
For the full campaign setup this sits inside, see our Google Ads lead generation guide.
What changed, and who was upgraded automatically
Google told advertisers by email that, from 1 September 2026, campaigns using automatically created assets or the campaign-level broad match setting would be upgraded to AI Max for Search, as Search Engine Roundtable reported. Campaigns from the broad match group moved with search term matching on and the other features off, according to PPC Land, which also reported that Dynamic Search Ads were moved to a February 2027 phase.
| Feature | What it does | Main risk |
|---|---|---|
| Search term matching | Shows ads on searches beyond your keywords, based on your site and assets | Irrelevant queries if negatives and goals are weak |
| Text customisation | Writes ad text variations from your site and ads | Off-brand or non-compliant claims |
| Final URL expansion | Sends clicks to the page Google thinks fits best | Traffic to pages that do not convert |
When to switch: a decision table
| Your situation | Suggestion |
|---|---|
| Good tracking, steady conversions, growth limited by keywords | Test AI Max now |
| Lead gen with offline conversion import (qualified leads, sales) | Test, judging on qualified leads only |
| Few conversions a month or tracking you do not trust | Stay classic; fix tracking first |
| Regulated claims (finance, health, education promises) | Test search term matching only; keep text customisation off |
| Already auto-upgraded in September | Audit search terms, URLs and settings now |
Write strong RSA headlines before AI Max does
Give AI Max good material to work from. Draft your responsive search ads with our free RSA Builder.
A 4-week test with guardrails
Guardrails first, then the split
Run at least 4 weeks or until both arms have meaningful conversion volume.
- Guardrails: account-level negative keywords, brand inclusions or exclusions, URL exclusions for pages that should never get ad traffic (careers, blog, login), and text customisation off if claims are sensitive.
- Experiment: use a campaign experiment with a 50/50 split rather than switching the whole campaign.
- Weekly review: check the search terms report and landing pages AI Max chose. Add negatives early.
- Judge: compare cost per qualified lead or ROAS from your own data, not only platform conversions.
Example (illustrative)
A Bengaluru B2B software firm tested AI Max for four weeks. Platform conversions rose, but most new form fills came from job seekers landing on a careers-adjacent page chosen by URL expansion. After excluding that URL and adding job-related negatives, the second test showed a modest gain in qualified demos at a similar cost, and AI Max was kept on.
The Bargaon view
AI Max is where Google Search is heading, so the choice is less “if” than “how carefully”. Get tracking right, set guardrails, test against a control and judge on qualified results. Our Google Ads lead generation guide covers tracking and structure, and our Google Ads management team can run the test with you.
Prepare your ad copy for AI Max
Use the RSA Builder now, then see our Google Ads service if you want help with the test.
FAQs
Can I opt out of the AI Max upgrade?
Reporting from the time says the main way to avoid the automatic upgrade was to turn off automatically created assets or campaign-level broad match before it ran. After the upgrade, you can still control individual AI Max features in campaign settings.
Does AI Max replace keywords?
No. Keywords still work; AI Max adds matching beyond them. Strong keywords, negatives and assets give it better signals.
Is AI Max good for lead generation?
It can be, if you import qualified lead or sales data and judge results on that. Optimising only on raw form fills risks more low-quality leads.
Sources
- Search Engine Roundtable: On Sep 1 Google Ads to migrate ACA and campaign-level broad match to AI Max (7 Aug 2026)
- PPC Land: Google blocks new broad match settings before the AI Max migration (Aug 2026)
Last updated: 10 November 2026. How we researched: industry reporting on Google’s AI Max migration emails and help pages, plus Bargaon’s test plan described above.
Digital Marketing & SEO Specialist
Himanshu Patni has spent more than nine years in search and growth marketing, watching discovery move from ten blue links to AI answers. His work brings SEO, AEO and GEO together with paid media and measurement as one system. At Bargaon, he writes about where search is heading and what businesses should do before the shift becomes obvious.
