5 tips for writing high-converting ad copy with AI

Anyone can get an AI model to produce ad copy. The gap between mediocre output and copy that actually converts almost never comes down to the model — it comes down to what you feed it and how you filter what comes back. A few things that consistently make a difference:

1. Give it the objection, not just the offer

Weak prompt: "Write an ad for a skincare serum." Strong prompt: "Write an ad for a skincare serum, for someone who has tried three serums that didn't work and is skeptical of another one." The second version forces the model to write copy that addresses doubt instead of just listing features — which is usually what separates an ad that gets scrolled past from one that gets a click.

2. Ask for more variants than you think you need

A single AI-generated ad is a guess. Ten variants — different hooks, different angles (price, social proof, urgency, curiosity) — is a testable hypothesis. Since generating variants is now cheap, the mistake is treating the first output as final rather than as one of many candidates to run against each other.

3. Specify the platform, not just the product

Copy that works on Instagram (short, visual-first, casual) rarely works unchanged on LinkedIn (more context, professional tone) or in a Google search ad (keyword-dense, direct). Telling the model exactly where the copy will run — and pasting in a real example of an ad that performed well there — narrows the output dramatically.

4. Anchor it to your actual brand voice

Generic AI ad copy has a recognizable "AI voice" — upbeat, slightly generic, heavy on exclamation points. The fix isn't fighting the model line-by-line; it's giving it real brand voice material (past ads, your about page, your founder's actual writing) to draw from, so the output sounds like you rather than like every other AI-written ad in the category.

5. Edit for what a human would actually say out loud

The fastest tell for AI-generated copy is a sentence no one would say in conversation. Read the draft out loud before shipping it. If it sounds like copy instead of like a person talking to another person, cut it down until it doesn't.