Write ad copy with AI

Ad copy is the one place where AI's biggest weakness — producing a lot of competent, slightly generic text fast — is actually a strength. You don't want one perfect ad. You want a handful of distinct angles to test against each other, because the winner is almost never the one you'd have bet on. This workflow generates those variations in about fifteen minutes and tightens them for the platform you're running on. It's free, and it's genuinely how performance marketers work.

The insight most people miss: the goal isn't a finished ad, it's ammunition for a test. Generate several genuinely different approaches — different hooks, different angles — not five rewordings of the same sentence.

What you'll walk away with

• Five distinct ad variations, each with a headline, body, and call to action
• Copy tuned to your specific platform's tone and length
• A polished, on-brand final set ready to load into your ad manager
• A repeatable way to refresh creative whenever performance dips

Step by step, with the judgment that matters

1. Generate variations with ChatGPT. Give it your product, audience, and platform, and ask for five variations — each with a headline, body, and CTA. Naming the platform is what makes this work: LinkedIn copy is buttoned-up, TikTok copy is loose and native, Google Search copy is tight and keyword-led. The same product needs different language in each place, and the model handles that if you tell it where the ad is running.

2. Refine tone with Grammarly. Run each variation through Grammarly set to a "confident" and "persuasive" tone. This catches the places where AI hedges — ad copy has no room for "might" or "could help." Trim anything that softens the promise.

A real run

For a project-management app targeting freelancers on Meta, ChatGPT produces five angles: one leads with time saved, one with the pain of missed deadlines, one with a client-impressing angle, one price-led, one social-proof. They're genuinely different, not five phrasings of "great app." Grammarly tightens the two wordiest ones. You load all five into Meta, let them run, and the deadline-pain angle wins — the one you'd never have picked. Fifteen minutes to create, and the test does the deciding.

Where it goes wrong

• The variations all sound the same. You asked for five ads instead of five *angles*. Re-prompt asking for genuinely different hooks — pain, aspiration, price, proof, curiosity.
• The copy doesn't fit the platform. You didn't name the platform in the prompt. Add it so the model matches character limits and tone.
• Nothing converts. Copy is only half of it — if the offer or targeting is off, no headline saves it. Test the offer too, not just the words.

The honest cost

Free. ChatGPT and Grammarly free tiers cover this entirely. The only real cost here is your ad spend — and the point of generating variations is to spend it more efficiently by testing before you scale.