Most campaigns go live with untested assumptions baked in. Real pre-testing is expensive and slow, so it almost always gets skipped.
ChatGPT can act as a surrogate audience. It won't replace proper research, but it will surface the objections, confusion, and "so what?" moments your campaign would otherwise run straight into.
The key is building the persona properly before you put your work in front of it. Set up one prompt per audience segment you're targeting, give each one a detailed character brief, and then put your campaign inside it.
Try this prompt for each persona:
You are [detailed persona — e.g. "a 38-year-old senior marketing manager at a 200-person B2B SaaS company. You have a small team and a lean budget, you're under pressure to show pipeline contribution, and you're sceptical of anything that sounds like hype. You scroll LinkedIn quickly and only stop for things that feel genuinely useful or uncomfortably relevant."]
I'm about to launch a campaign and I want your honest reaction before it goes live.
Campaign details:
- Objective: [what I want the audience to think, feel, or do]
- Core message: [your main headline or claim]
- Channel: [where they'll encounter it — e.g. LinkedIn ad, email, landing page]
- The creative/copy: [paste it or describe it]
Give me:
1. Your gut reaction in 2-3 sentences — be direct, not polite
2. The one thing that makes you hesitate or pushes you away
3. The one thing that actually lands or feels credible
4. The question this campaign leaves unanswered
5. Whether you'd take the next step and why or why not
Run this across three or four personas and look for patterns. If the same objection comes up twice, that's what to fix before launch. If one message consistently lands and another doesn't, you've found your lead angle.
Happy prompting!
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