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If you logged into your Google Ads account on April 15, 2026, and saw a new pop-up banner, you weren’t alone. Hundreds of thousands of advertisers worldwide got the same message: Google wants to upgrade your campaigns to Google AI Max. For many digital marketers, the notification was a surprise. It sounded polite, but the change isn’t optional.
Google AI Max Exits Beta — And Takes No Prisoners
Google AI Max for Search campaigns is no longer just an experiment. After more than a year in open beta, starting in May 2025, Google officially made the product available to everyone on April 15, 2026. In an announcement by Brandon Ervin, Director of Product Management at Google Ads, he confirmed what many performance marketers expected: older campaign formats are being replaced, and the September 2026 deadline is final.
Google says that AI Max for Search campaigns brings an average of 7% more conversions or conversion value at a similar CPA or ROAS when advertisers use all its features search term matching, text customization, and final URL expansion compared to using search term matching alone. This number is important, but it should be examined closely. The current 7% figure is lower than the 14% increase Google mentioned when AI Max first launched in May 2025. That earlier number was criticized because it did not match early independent testing. Independent tests published in November 2025 found that AI Max delivered conversions at about 35% lower return on ad spend than traditional match types across more than 250 retail campaigns.
The performance debate is real. But it doesn’t change the calendar.
The Dynamic Search Ads Sunset: What’s Actually Happening
Dynamic Search Ads automatically created assets (ACA), and campaign-level broad match settings will all be upgraded automatically to AI Max for eligible campaigns by the end of September 2026. This means three different campaign types will be combined into one required migration, and the timeline is shorter than many marketers expect.
The voluntary upgrade window runs from April through August 2026, giving advertisers approximately 5.5 months to migrate on their own terms. That’s roughly 40% less runway than the 2022 Smart Shopping-to-Performance Max transition, which lasted about 9 months.
The two-phase structure matters here. Through August 2026, advertisers can upgrade voluntarily using Google’s one-click tools, which convert dynamic ad groups into standard ad groups with AI Max features switched on. Starting in September, no new DSA campaigns can be created through the Google Ads interface, Google Ads Editor, or the API, and the remaining eligible campaigns are automatically upgraded.
There is no formal opt-out for affected campaigns. If your account runs Dynamic Search Ads, the Dynamic Search Ads Sunset applies to you, regardless of performance history or account size.
AI Max does the three jobs that used to define a search marketer’s week: it decides which queries to show, it writes the ad, and it chooses the landing page. That’s a fundamental change in how human monitoring functions within a paid search campaign and it’s precisely why the transition demands deliberate preparation rather than the automatic acceptance of auto-upgrade campaigns.
Why Google Is Doing This Now
“When we talk about the new era of search, we’re really talking about how people’s search habits have become much more complex and difficult to predict,” Ervin told MediaPost. “Simply pulling text from a website isn’t enough anymore.”
More users are turning to AI-powered search tools, such as Google’s AI Overviews, Gemini, ChatGPT, and Claude, for complex, multi-step questions. These searches are less simple and harder to predict than traditional keyword-based searches. DSA’s page-based matching can’t keep up.
Competition is also a factor. According to eMarketer, Meta is expected to overtake Google in digital ad revenues for the first time in 2026. This direct threat makes it a strategic priority for Google to move advertisers to a higher-performing, AI-focused platform.
Google AI Max is more than merely a product update. It represents a major change in how Google positions its entire search advertising system.
How to Switch from Dynamic Search Ads to AI Max: A Solid Framework
For marketers asking how to switch from Dynamic Search Ads to AI Max without disrupting live campaign performance, the process breaks into three actionable phases.
Phase 1: Audit Before You Migrate
Before clicking anything, export all historical performance data from existing Dynamic Search Ads campaigns. Many agencies lost access to pre-migration Smart Shopping benchmarks in specific dimensions after the 2022 auto-upgrade. The same risk applies here. Pull your search term reports, negative keyword lists, and landing page performance data now, not after migration.
Negative keywords need special attention. Because AI Max matches based on site content instead of keywords you set, it’s especially important to review your negative keyword lists before migrating. If a DSA campaign is upgraded automatically, it will default to the most aggressive AI Max setup, with all three features enabled.
Phase 2: Use Google’s One-Click Experiment Tools
Google recommends using one-click experiments, which give advertisers a cleaner way to compare performance before making a full rollout decision. Run the experiment for a minimum of four weeks before drawing conclusions. The AI Max learning period needs time to stabilize, and campaigns migrated too close to September risk hitting it during a high-spend Q4 period.
In 2022, campaigns migrated in July and August hit learning-period issues right through September — peak back-to-school spend. Campaigns voluntarily migrated in April and May had the learning period behind them. The 2026 compressed window makes this risk more acute.
Phase 3: Configure the AI Brief
The AI Brief allows advertisers to guide AI Max in plain English in three areas: messaging guidelines (what ads should and shouldn’t say), matching guidelines (which searches to target or avoid), and audience guidelines (how to customize messages for specific groups). For brand-sensitive accounts like legal firms, financial services, and healthcare, messaging guidelines are necessary. Set them up before you migrate.
The Real Stakes of Auto Upgrade Campaigns
The September 2026 auto upgrade campaigns deadline isn’t a suggestion. Migration is required for eligible campaigns. The only real choice advertisers have is to migrate early, which gives them more control over which features are enabled by default.
Marketers who wait will get a setup chosen by Google. Those who act now will start Q4 2026 with weeks of clean data, a well-prepared AI Brief, and a negative keyword list aligned with their real business goals, not just what the algorithm guesses.
Google AI Max makes keyword management easier and expands reach beyond keyword lists, but it does not remove keywords entirely. Keywords are still important because they give the AI key intent signals. Teams worried about losing control should remember that such structure still matters. The marketers who succeed in this new environment will not be those who let the system do everything. Instead, they will be the ones who know what the AI needs to make better decisions and provide exactly that.
The September deadline is five weeks away. The migration tools are live. The only thing left is the decision.
