How to choose between AI Max and Performance Max in 2026

That is where the confusion tends to start, because two of the options in front of them share a name and an AI backbone without being the same kind of thing. Performance Max is a campaign type that runs one set of assets across every Google network, and AI Max is a setting you switch on inside a Search campaign you already have. Neither is meaningfully cleverer than the other, so the real question is how much of the funnel, and how much reporting visibility, you are willing to hand to Google, and which commercial goal makes that trade worth it.

This guide covers what each one is, who each suits, how they compare on reach, control and the numbers, and how to make the call for your account.

Key takeaways

• Performance Max is a standalone campaign type that runs one set of assets across Search, Shopping, YouTube, Display, Discover, Gmail and Maps, while AI Max is a setting you switch on inside an existing Search campaign.
• The real decision comes down to how much of the funnel and how much reporting visibility you are willing to hand to Google.
• Performance Max suits product-feed ecommerce and cross-channel goals, and AI Max suits search-intent-led and lead-generation accounts that have plateaued on exact and phrase keywords.
• Google reports that advertisers activating AI Max typically see 14% more conversions, rising to 27% for campaigns still mostly using exact and phrase keywords, while an independent analysis of more than 250 retail campaigns found a median revenue lift of 13% alongside a median 16% rise in CPA, so outcomes vary widely by account.
• Running both in one account means they can compete on Search inventory, which brand exclusions on Performance Max exist to prevent.
• From September 2026 Google is automatically upgrading broad match and Automatically Created Assets Search campaigns to AI Max, so for many advertisers this is a live change rather than a choice.

The market is handing more of the ad stack to AI

Automation has become the default setting of a Google Ads account rather than an advanced option. Performance Max adoption among Google advertisers rose from 60% to 71% in a single year, and automated bidding strategies such as Target CPA, Target ROAS and Maximise conversions are now the standard way accounts bid.

AI Max is the next layer of that shift, and from September 2026 it stopped being something advertisers opt into. Google closed off the creation of new broad match and Automatically Created Assets campaigns in August 2026, then began automatically upgrading the Search campaigns that still use them to AI Max across September. For a large number of accounts, the question is no longer whether to engage with AI Max, but how to run it well once it arrives.

Performance Max and AI Max are built for different jobs, so choosing between them, or running them together, starts with knowing what each one actually does.

What Performance Max is, and who it suits

Performance Max is a goal-based campaign type that runs one set of assets across all of Google’s networks from a single budget. You give it headlines, descriptions, images, videos, a product feed where relevant, and a conversion goal, and Google decides where those assets show across Search, Shopping, YouTube, Display, Discover, Gmail and Maps, and how much to bid in each auction.

It works from asset groups, audience signals that guide the model rather than restrict it, search themes, and Smart Bidding towards a target such as Target ROAS or Target CPA. It replaced Smart Shopping and Local campaigns, which Google upgraded automatically by the end of 2022, and it now runs in over a million accounts.

Performance Max suits advertisers with a product feed and cross-channel goals, particularly ecommerce brands and anyone prospecting for new customers across Google’s discovery surfaces. It needs enough conversion data to learn, so it rewards accounts with steady volume and struggles in thin ones. The long-standing complaint has been visibility, because for its first two years advertisers could not see how budget split across channels, though campaign-level negative keywords, brand exclusions and channel-level reporting added through 2025 have narrowed that gap.

What AI Max for Search is, and who it suits

AI Max for Search is a setting you switch on inside an existing Google Search campaign, which keeps its ID, budget, bids and ad copy while gaining a bundle of AI features that change how it matches queries and builds ads. It is a layer on a Search campaign you already run, and Google introduced it in May 2025 before moving it out of beta in April 2026.

AI Max bundles three features, each changing a different part of the campaign. Search term matching expands beyond your keyword list using broad match and keywordless technology, pairing queries to your landing pages and assets. Text customisation generates headlines and descriptions from your existing copy and landing pages, the feature previously known as Automatically Created Assets. Final URL expansion lets Google send a click to whichever page on your site it judges most relevant, rather than the URL you set.

You keep a real set of controls, including brand inclusions and exclusions, locations of interest, URL inclusion and exclusion lists, and text guidelines that fence off what the generated copy can say. AI Max needs conversion-based Smart Bidding to work properly, and it carries two watch-outs worth knowing before you switch it on. Once it is active, your keywords stay in place but their match types stop constraining which queries you show for, unless you disable search term matching at ad group level, so accounts that used exact and phrase match to separate intent tiers can lose that separation quietly. Final URL expansion can also route clicks to pages you would not have chosen and can break landing pages that rely on tracking templates, so the URL controls are worth setting before launch.

AI Max suits search-intent-led and lead-generation accounts that have plateaued on exact and phrase keywords and want more qualified reach without handing over the whole funnel. It rewards a broad site with many relevant landing pages for final URL expansion to use. This is the territory where search intent does the commercial work, the kind of high-value lead generation we run in our paid search work with Hamptons.

How AI Max and Performance Max compare

Both tools ask you to hand more work to Google, and they diverge mainly on how much of the funnel they take and how much visibility you keep in return. Performance Max takes the whole funnel across every network and gives back reach and discovery, while AI Max stays inside Search and gives back qualified query expansion with your reporting and negative keywords intact. The table below sets the practical differences side by side.

Read commercially, the split is about control and accountability. Performance Max is the right tool when cross-channel reach and a product feed do real work, and when you have the volume to let the model learn. AI Max is the right tool when high-intent Search has plateaued and you want more of it without losing sight of which queries you are paying for. The costly mistake is treating either as a set-and-forget switch, because both move spend around on signals you did not choose and reward the advertiser who keeps watching.

Reading the performance numbers honestly

Google reports that advertisers activating AI Max typically see 14% more conversions or conversion value at a similar CPA or ROAS, rising to 27% for campaigns still mostly using exact and phrase keywords, and it points to brands such as L’Oréal, which recorded a doubled conversion rate at a 31% lower cost per conversion. Those are Google’s own figures, and they describe the volume side well.

An independent analysis of more than 250 retail campaigns by Smarter Ecommerce found a median revenue lift of 13%, close to Google’s number, but alongside a median 16% rise in CPA and a ROAS spread from plus 42% to minus 35%. The volume gain is real and fairly consistent, while the cost of that volume varies enormously by account, which is the part the headline figures leave out.

The 27% uplift is largest where the starting point was most restrictive, so a campaign built on tight exact and phrase match will show a big jump simply because loosening the match broadens reach. That reflects the maths of match type, and says little about the quality of Google’s targeting. In-platform reporting also cannot tell you whether the extra conversions are genuinely new or demand that would have arrived anyway through brand or organic, now re-attributed to AI Max, so the honest way to read it is to test on a plateaued non-brand campaign and judge it on net-new query conversions and CPA, because the blended figure the platform shows will flatter it.

Should you run both, and where this is heading

Running both makes sense for accounts that need high-intent Search and cross-channel prospecting at once, provided the two are stopped from competing. AI Max anchors the Search campaign where intent is highest, and Performance Max scales discovery across YouTube, Display and Discover. Left unmanaged, they overlap on Search inventory, where Google resolves the clash by Ad Rank rather than by your intent, so branded and high-value queries can end up routed to the wrong campaign.

Brand exclusions on the Performance Max campaign keep branded search demand with the Search campaign that should own it, and leaving AI Max switched off on your branded Search campaign avoids paying to expand queries that already convert cheaply. Those two guardrails prevent most of the overlap. Google is also nudging advertisers towards a wider stack, with Demand Gen sitting alongside the two as the visual, social-style layer across YouTube and Discover, so for many accounts the practical question is how the three fit together.

Google closed off new broad match and Automatically Created Assets campaigns in August 2026, began automatically upgrading the Search campaigns that still use them to AI Max from September 2026, and will migrate Dynamic Search Ads in February 2027. More of the account moves onto automation with each of those changes, which means the advantage shifts to the advertiser who can still measure what the automation did. That is why benchmarking the real commercial outcomes and keeping a person in the loop matter more the more Google takes over the decisions.

Frequently asked questions

Is AI Max the same as Performance Max?

No, AI Max and Performance Max are not the same. AI Max is a setting you switch on inside an existing Search campaign, while Performance Max is a separate campaign type that runs across Search, Shopping, YouTube, Display, Discover, Gmail and Maps. AI Max keeps you in search results with your keywords, budgets and reporting intact, whereas Performance Max hands Google the whole funnel from a single budget. They can run in the same account, and many advertisers use both, but they are built for different jobs.

Is Performance Max worth it?

Performance Max is worth it for advertisers with a product feed and cross-channel goals who have enough conversion data for Google’s models to learn from. It runs one set of assets across every Google network and is strongest for ecommerce and prospecting. It is a weaker fit for accounts that need tight control over keywords, placements or budget by channel, because it hands most of those decisions to Google. Since 2025, campaign-level negative keywords, brand exclusions and channel-level reporting have given advertisers more control than the early version allowed.

Is AI Max any good?

AI Max can lift conversion volume for search-intent-led campaigns that have plateaued on exact and phrase keywords, though the efficiency gain is less certain. Google reports a typical 14% increase in conversions at a similar CPA or ROAS, rising to 27% for campaigns still mostly using exact and phrase keywords. An independent Smarter Ecommerce analysis of more than 250 retail campaigns found a similar 13% median revenue lift, but alongside a 16% median rise in CPA. Test it on a plateaued non-brand campaign and judge it on net-new query conversions.

When should I use Performance Max?

Use Performance Max when you have a product feed, want cross-channel reach from a single budget, and have enough conversion data for the model to learn. It suits ecommerce brands and prospecting, where discovery across YouTube, Display and Discover adds value beyond search. It is the wrong lead when your priority is precise control over which queries you pay for, or clean budget control by channel, because Performance Max keeps those decisions largely with Google. Set brand exclusions so it does not absorb branded search demand your other campaigns should own.

Can you use AI Max and Performance Max together?

Yes, and many mature accounts do, with AI Max anchoring high-intent Search and Performance Max scaling cross-channel prospecting. The two can compete on Search inventory, where Google resolves the overlap by Ad Rank rather than by your intent. Brand exclusions on the Performance Max campaign stop it absorbing branded search demand your Search campaign should own, and leaving AI Max off your branded Search campaign avoids paying more to expand queries that already convert well. Run both with those guardrails in place, not as a default.

Does AI Max replace your keywords?

No, AI Max does not remove your keywords, but it changes what they do. Once AI Max is on, keywords stay in the campaign while their match types stop constraining which queries you show for, unless you disable search term matching at ad group level. In practice, exact and phrase match behave more like broad match, so accounts that used match types to separate intent tiers lose that separation even though the keywords still appear unchanged. Audit which ad groups depend on match-type structure before enabling it.

Making the call

The choice between AI Max and Performance Max comes down to commercial fit, because both hand more of the work to Google and what protects your result is what you can still see and measure once they do. Performance Max earns its place where a product feed and cross-channel reach do real work and the account has volume to learn from. AI Max earns its place where high-intent Search has plateaued and you want more of it with your reporting intact. For a good number of accounts the honest answer is both, run with brand exclusions and a proper test so the two work together.

Whichever way it goes, the accounts that come out ahead judge automation on net-new conversions and cost per acquisition, because the numbers the platform reports to itself will always look kinder. If you want that discipline applied to your Google Ads, see how our paid media work ties every pound of spend back to a lead and a sale.