Ask your AI to pretend to be your ideal customer.
Then test your new campaign headline.
“I love it,” says Marsha, Customer profile #33. “This speaks directly to my pain points.”
Great news. Except Marsha doesn’t exist. And she was always going to say yes, no matter what you put in your headline.
Persona collusion
This is one example of how persona collusion shows up when working with your AI besties. AI personas are an easy marketing shortcut. In a matter of minutes, you test messaging, a promotional offer or rehearse a sales call.
But like all shortcuts, there’s a catch: the quiet agreement between you and your AI where it confirms what you want to believe.
It’s nothing nefarious. Nobody plans for it. It just sort of happens because the agents in the room are being just a little too nice.
Why your AI customer is such a pushover
AI personas tend to drift toward your customer stereotype. A 2026 study of ten AI models found that when given different personas, the “people” they created collapsed into a narrow, look-alike group. Your panel of five buyers may really be one buyer in five different outfits.
AI and groupthink. Run several personas in one chat as a virtual focus group, and they all start agreeing with each other. Research on AI personas in group discussions found they often cave to peer pressure.
It’s built to please. And if we’re honest, we sometimes lead the witness. We ask would this resonate with you? and rerun the prompt until the answer feels right.
Put an agreeable AI together with a hopeful marketer, and you get a customer who agrees to almost everything.
Real customers didn’t sign that deal in the real world.
Five ways to make your AI persona push back
1. Ask for the no, not the yes. Swap would you buy this? for give me three reasons why you’d ignore this.
2. Feed it real customer words. Paste in call notes, reviews, support tickets or survey comments, and build your customer personas from those, not from your hopes.
3. Keep personas apart. Test each one in a fresh chat so they can’t talk each other into agreement.
4. Hire a skeptic. Give one persona a job: find the weakest part of your idea.
5. Check with a real human. Use AI to sharpen your questions, then ask actual customers. Five honest conversations beat fifty friendly simulations.
The bigger lesson
The risk with AI personas isn’t that they’re wrong. It’s that they’re really good at convincing us what we want to hear. A true bestie should be the friend who tells you there’s spinach in your teeth. Not the one who says the outfit looks great when it doesn’t.