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Hey there,
Heads-up: the AI platforms are now writing your ads for you. Not "suggesting." Writing. ChatGPT turned it on by default on Oct 30, and Google's AI Mode is wrapping your ads in its own copy in 10 more countries.
The good news? They mostly write from one thing you control: your landing page.
Today:
ChatGPT now rewrites your ads by default (and Google's doing a version of it too)
2 brands that let AI (and their fans) make the ad
Quick hits: ChatGPT ads vs Google, AI Mode ads go global, Runway's approve-first ad agent
The 5-Minute Marky Play: audit the page AI is quoting
📰 The big story: your ads are getting rewritten
What happened: On Oct 30, OpenAI turned on "creative enhancements" for every new and existing self-serve ChatGPT Ads campaign. ChatGPT can now rewrite your headlines and descriptions, translate them, resize your images and even send the click to a different page on your site. Those versions can run without you approving them, and there's no preview of every variation.
Same week, Google expanded ads in AI Mode to 10 more countries and launched multiturn ads in the U.S. (ads on follow-up questions). Adthena's first UK examples show each ad block opening with an AI-written intro line that changes with the question. Your existing Search, Shopping and PMax campaigns are eligible automatically, and Google Ads doesn't report AI Mode as its own placement.
Why it matters for marketers: Your ad copy is now a starting point. The real "creative" is your landing page, your feed and your assets, because that's what the AI pulls from when it writes the version people actually see.
🔮 Marky's Call
Within a year, "write the ad" turns into "write the source material." The marketers who win will treat landing pages like ad scripts: clear offer, clear price, clear proof, in the first screen.
I'd change my mind if… OpenAI or Google ship reporting that shows each AI-written variation, and the rewrites lose to human copy. Then opting out becomes the default move.
📈 Outlier Breakdown
Two campaigns this fall that handed the making of the ad to AI and got outsized reach for it.
1. Goodwipes: "Meet Asstra"
A 4-person agency (OK Future) made a spoof of an AI-model launch commercial for a wipes brand. Concept to finished spot in 4 days, using AI for the characters, voices and locations, against a projected $700K shoot. See it →
📊 750K+ Reddit views in 48 hours, ~1.5M across subreddits and 800+ shares (per Goodwipes via Digiday)
Why it works:
It parodies a format everyone just saw, so the joke lands in 2 seconds.
AI made it cheap enough to ship while the reference was still fresh.
Reddit-native humor, posted where the audience already hangs out instead of as a paid ad.
2. Brewlander: "A.I. Irresponsibly"
The Singapore brewer skipped the film shoot and put the prompts on billboards and print. People typed them into AI video tools and made the beer ads themselves. See it →
📊 500+ fan-made AI ads; brand-reported +32% awareness (campaign case study, not independently verified)
Why it works:
The prompt is the hook. People stop to read an ad that hands them something to make.
Every fan-made video is free reach for the brand.
It turns "anyone can make an ad with AI" into the joke instead of hiding from it.
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One email, 5 minutes a day, read by 1.1M+ people. Get tomorrow's picks.
⚡ Quick hits
ChatGPT ads made 64% less per visit than Google Search ads. A working paper tracking ~1,900 sites found U.S. ChatGPT ad visits brought in $0.89 vs $2.45 for Google Search, converting at 0.37% vs 1.17%.
Why it matters for marketers: Early ChatGPT ad clicks aren't buying yet. CTR alone will lie to you. Do this: If you test ChatGPT ads, judge them on revenue per visit next to your Google numbers, not clicks.
Google AI Mode ads hit 10 more countries. Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore are live; Brazil, Mexico and the UK are planned for Q4. There's no separate opt-out.
Why it matters for marketers: If you run Search, Shopping or PMax there, you're probably already showing up in AI answers. Do this: Search your 5 money keywords in AI Mode as full questions and screenshot what shows up.
Runway Ads is out for every paid plan, and it asks first. It connects to Meta, Google and TikTok, makes on-brand variants of ads that are already working, and nothing publishes until someone on your team approves it. Runway says its own team went from under 100 to ~1,000 ads a week and cut cost per subscriber 41%.
Why it matters for marketers: Same idea as ChatGPT's rewrites (more versions, faster) but with a human sign-off. Do this: If approvals matter to your brand or clients, favor tools that keep you in the loop.
🛠️ The 5-Minute Marky Play: audit the page AI is quoting
If ChatGPT and Google are writing your ads from your landing page, make sure that page says what you'd want in an ad.
List your top 3 ad landing pages (the ones with the most spend).
Paste each page's text into ChatGPT, Claude, Gemini or Grok with the prompt below.
Fix anything it got wrong: put the offer, price and main proof point in the first screen, and delete expired promos or old prices.
If you run ChatGPT Ads, open Ads Manager → Manage settings and decide on creative enhancements. A campaign setting beats the account default, so turn it off per campaign for anything with legal or compliance copy.
Once a week, ask AI Mode 5 questions your buyers ask and screenshot the ads, because Google won't report those placements for you.
Pro tip: Make one "golden" landing page per offer. The fewer pages an AI can pick from, the less it can wander.
You are an AI ad system that writes search and chat ads using only the landing page below.
Landing page text:
[PASTE PAGE TEXT]
1. Write 3 ads (headline up to 30 characters + description up to 90 characters) the way an automated system would, using only facts on this page.
2. List every claim, price, offer or date you used, and quote where it came from on the page.
3. Flag anything a system could get wrong: outdated prices, vague offers, claims without proof, missing details.
4. Rewrite the first 100 words of the page so any ad written from it would be accurate and compelling.🎯 Prompt of the Day: the Landing Page Leak Finder
When to use it: your ads get clicks but the page doesn't convert.
Act as a conversion copywriter. Here's my landing page: [PASTE].
Find the 5 biggest reasons a visitor from a [CHANNEL] ad would leave without converting...Plug the Leaks has 4 landing page prompts like this, free. Get the full prompts →
💬 Your turn
Have you seen ChatGPT or AI Mode show your ad in a way you didn't write? Hit reply and tell me. I read every one.
On YouTube: I make free AI videos every day with Google Flow (character reference prompt free in the description). Watch it here
All 7 free prompt packs (Meta ads, email, SEO, Reels, landing pages, ManyChat DMs, AI video) are in the library.
Want your AI or marketing tool in front of MarketerHub readers? Email [email protected].
Talk soon,
Jim
MarketerHub
P.S. Want the full playbooks, templates and automations behind plays like this? MarketerHub Pro is $8/month or $50/year.