Google AI Max Text Customization Rolls Out to Advertisers
Google is expanding text customization controls in AI Max campaigns, giving advertisers term exclusions and messaging restrictions to guide AI-generated ad copy. Here's how the new features work and what they mean for campaign performance in 2026.
Key Takeaways
- Google first previewed text customization controls for AI Max campaigns at Google Marketing Live in May 2026, according to…
- Text guidelines appear in the campaign settings under a “Text guidelines” section marked with a Beta label. The interface has…
- Three groups stand to gain immediately:
The short version
Google has expanded text customization controls in AI Max (formerly Performance Max) to all advertisers globally as of July 2026, giving PPC managers long-awaited guardrails over AI-generated ad copy. Advertisers can now set up to 25 term exclusions and 40 messaging restrictions per campaign to prevent Google’s AI from using off-brand language, competitor names, or pricing claims — without sacrificing ad strength scores.
Key facts
- Text guidelines include 25 term exclusions (words to block) and 40 messaging restrictions (rules) per campaign
- Unlike pinning, text guidelines do not lower ad strength scores
- A “Copy guidelines from existing campaign” option lets you replicate rules across accounts
- The feature works in AI Max for Search and is expanding to AI Max for Shopping and Performance Max
- Google announced three AI Max updates at Marketing Live 2026: text customization, AI Brief, and text disclaimers
What happened
Google first previewed text customization controls for AI Max campaigns at Google Marketing Live in May 2026, according to Practical Ecommerce. The feature initially launched in limited beta but expanded to all advertisers globally in July 2026, as confirmed by Google’s official blog and Search Engine Roundtable.
This marks a significant shift in how much control advertisers have over AI-generated creative. Before text guidelines, Google’s AI could write almost anything within a campaign’s asset pool — leading to situations where luxury brands saw ads with words like “cheap” or local businesses had their competitor’s name appear in auto-generated copy. The new controls change that equation.
The timing aligns with Google’s broader push to make AI Max the default campaign type across Search and Shopping. As we covered in our breakdown of the Google Dynamic Search Ads to AI Max upgrade, Google is systematically retiring older campaign types in favor of AI-driven formats. Text customization makes this transition more palatable for advertisers who were reluctant to hand over creative control entirely.
How do text guidelines actually work in Google Ads?
Text guidelines appear in the campaign settings under a “Text guidelines” section marked with a Beta label. The interface has two main components:
Term exclusions (up to 25): A text field where you list words or phrases Google’s AI should never use. Practical Ecommerce’s screenshot of the interface shows the example “Cheap, free shipping” — terms a premium brand would want to block.
Messaging restrictions (up to 40): Rules that constrain what the AI can say. Common examples include “Do not mention competitor names,” “Do not include specific pricing,” or “Do not make medical claims.” Each restriction is a natural language instruction that Google’s AI interprets when generating headlines and descriptions.
A critical detail: unlike pinning — where you force a specific headline or description into a fixed position — text guidelines don’t hurt your ad strength score. This matters because Google uses ad strength as a quality signal; ads with higher scores tend to serve more frequently.
There’s also a “Copy guidelines from existing campaign” option, which is a practical workflow feature for agencies. If you manage 20 accounts with the same brand voice rules, you build the guidelines once and replicate them everywhere.
Who benefits most from this update?
Three groups stand to gain immediately:
Premium and luxury brands who have been hesitant to adopt AI Max because they can’t risk AI-generated copy using words like “discount,” “cheap,” or “bargain.” Term exclusions solve this directly.
Regulated industries — healthcare, legal, financial services — where AI-generated claims can create compliance risk. Messaging restrictions let advertisers block entire categories of language (e.g., “Do not make efficacy claims” for pharmaceutical advertisers).
Agencies managing multiple accounts benefit from the copy-guidelines feature and the fact that these rules don’t harm ad strength. They can apply consistent brand guardrails across client accounts without degrading performance signals.
If you’re running Google Ads Demand Gen campaigns, note that text guidelines currently apply to AI Max for Search with expansion to Performance Max and Shopping expected. Demand Gen uses different creative formats and is not yet covered.
What this means (our take)
Text customization is a pragmatic concession from Google. AI Max’s value proposition — “let our AI handle everything” — worked for performance-only advertisers but scared off brands that care about positioning. Text guidelines are the bridge: Google keeps the automation, advertisers keep the brand.
But there’s a subtle trade-off. Every restriction you add narrows the AI’s creative range, which can reduce the algorithm’s ability to find high-performing variants. We recommend starting with 5-10 carefully chosen term exclusions and 3-5 messaging restrictions rather than maxing out all 25+40 slots on day one. Test for two weeks, review what the AI produced with those guardrails, and only add more restrictions if you see problematic copy patterns.
The “doesn’t hurt ad strength” detail is also significant. It suggests Google is treating text guidelines as a neutral input — unlike pinning, which the system views as a constraint that reduces creative diversity. This is smart product design. It encourages adoption.
For a deeper look at how AI-driven campaign types are reshaping PPC strategy, see our Performance Max Strategy Guide for 2026.
What to do now
- Audit your current AI Max campaigns. Pull a search terms report and look for AI-generated ad copy that mentions competitors, uses off-brand language, or makes unapproved claims.
- Build your exclusion list. Start with 5-10 words you never want in your ads. Copy these across all AI Max campaigns using the “Copy guidelines” feature.
- Set 3-5 messaging restrictions. Focus on the biggest brand risks first — competitor mentions, pricing claims, compliance language — not edge cases.
- Monitor for two weeks. Check whether your guidelines reduced problematic copy without tanking CTR or conversion volume. Adjust only if needed.
- Plan for Shopping expansion. Text customization is coming to AI Max for Shopping. Prepare your product feed language now so you’re ready when it launches.
FAQ
Do text guidelines work in Performance Max campaigns?
Text guidelines launched in AI Max for Search and are expanding to Performance Max and AI Max for Shopping. As of July 2026, all Performance Max advertisers should have access. Check your campaign settings under the “Assets” section.
How is text customization different from pinning?
Pinning forces specific assets into fixed positions, which reduces Google’s ability to optimize and can lower ad strength scores. Text guidelines provide negative constraints (what NOT to say) without limiting creative diversity in the same way — and they don’t affect ad strength.
What happens if I use all 25 term exclusions?
Nothing breaks, but you may overly constrain the AI. Google’s system needs creative flexibility to find winning combinations. Start with 5-10 critical exclusions and add more only when you see specific problems in your ad copy.
Can text guidelines prevent AI from writing about pricing?
Yes, if you add a messaging restriction like “Do not mention prices, discounts, or promotional pricing.” The AI will avoid generating copy that references specific dollar amounts or deal language.
Will text customization come to other campaign types beyond AI Max?
Google hasn’t announced expansion beyond AI Max and Performance Max. Responsive Search Ads in standard Search campaigns already have pinning and asset-level controls, which serve a similar purpose through a different mechanism.
Sources
- Google Ads Gets 3 AI Max Updates — Practical Ecommerce (May 5, 2026)
- We’re expanding beta access to text guidelines for all advertisers globally in AI Max — Google Blog
- Google Ads Text Guidelines Rolling Out To All In AI Max — Search Engine Roundtable
- Google AI Max: How It Works In Search Campaigns — The Keyword
- Google Ads New AI Max Frequently Asked Questions — Search Engine Roundtable
