ChatGPT will start rewriting your ads October 29. Read them first

According to Search Engine Roundtable's report on OpenAI's email to advertisers, creative enhancements will be switched on for new and existing self-serve campaigns starting Friday, October 30, 2026. OpenAI's help article has since been updated to say Thursday, October 29, so treat October 29 as the real deadline. The enhancements draw on what's already in your ad and on your landing page.

The email lists four kinds of changes: new or updated headlines and descriptions, image resizing, destination URL optimization, and translation into other languages. And the line that matters most: these versions can run without requiring you to review or approve each one.

PPC Land adds that variations can be generated ahead of time or in real time, based on the conversation where the ad appears. So the ad a person sees may be written for their chat, not by you.

Remember how ChatGPT picks ads: it matches them to the conversation, not to a keyword. A person who types three paragraphs about a leaky water heater is a very specific moment. An ad written in advance for "plumber near me" may not fit it well. Rewriting the ad to match the conversation is OpenAI's way of making ads feel less like interruptions.

There's a logic to it, and other ad platforms do similar things. Google and Meta both have AI that writes and remixes ad creative. But each one gives advertisers a different amount of control, and here the default is that the AI is in charge unless you say otherwise.

Your ad is a promise. If a rewrite says something you don't offer, a price you don't charge or a service area you don't cover, you're the one who gets the confused phone call. Regulated businesses have even more at stake. A medical practice, a law firm or a financial advisor may have rules about what an ad can claim, and those rules don't change because an AI wrote the sentence.

Landing page optimization is the other one to watch. If ChatGPT sends clicks to a different page on your site than the one you chose, the page your offer and tracking were built around may get skipped. And translation sounds helpful until an ad in a language your team doesn't speak brings in calls you can't answer.

Advertisers noticed. One PPC manager quoted by Search Engine Roundtable said the team had already paused its ChatGPT ads test over poor lead quality. Another pushed back on the idea that less work for advertisers means better results. Only two voices so far, but that's reason enough to check before you leave the default on.

OpenAI says you can opt out before October 29 or change the setting any time in Ads Manager. Existing account and campaign opt-outs are preserved, and a campaign's own setting wins over the account default. OpenAI's help article on creative enhancements has the details. Here is a simple way to choose:

• If you're in a regulated field, or your ads include prices, guarantees or claims, opt out at the account level before October 29.
• If you want to test it, opt out at the account level, then turn it on for one campaign. The campaign setting wins over the account default.
• Check that your landing pages can stand on their own, since the system may send people to a different page on your site.
• Judge any test on booked customers and lead quality, not clicks.

Whatever you choose, look at your live ads after October 29. A setting you meant to change and didn't is how a default ends up deciding for you.

OpenAI says the enhancements draw on what's already in your ad and on your landing page. That cuts both ways. If your landing page is vague, the rewrites will be vague. If it says exactly who you help, where you are, what it costs and what happens next, the AI has better words to work with.

So before October 29, reread the pages your ChatGPT ads point to as if a stranger were going to quote them. Remove anything outdated, like an old promotion or a service you no longer offer, because the system may not know it's out of date.

This is the second time this month a major platform has switched on an AI feature for existing ads with an opt-out deadline. Meta is adding product browsing to existing ads on October 28 unless advertisers opt out. Now ChatGPT ads follow one day later. Some of these features may work well for you. Either way, the defaults are moving toward more AI control, and the businesses that check their settings keep control of their message.

If you want a second opinion on your ad settings before these defaults change, our founders will walk you through it. Talk to them below. See you in the next edition.