Can AI Really Write Copy That Converts? A Brutally Honest Review of Jasper vs. ChatGPT vs. Copy.ai

If you’re a small business owner, you’ve probably seen the promises:

“AI writes your marketing copy in seconds!”
But does it actually work? I tested three of the most talked-about AI copywriting tools (Jasper, ChatGPT, and Copy.ai) to see if they can really craft words that sell.

The Contestants

  • Jasper: Marketed as an all-in-one copywriting assistant for ads, emails, and blogs.

  • ChatGPT: A versatile AI that can do everything from essays to social posts.

  • Copy.ai: A tool specifically designed for quick marketing copy templates.

The Test

I gave each tool the same prompt: Write a 50-word Facebook ad for a fictional coffee subscription box targeting busy professionals.

The Verdict

  • Jasper: Polished, professional, but felt generic like every other ad you’ve ever read.

  • ChatGPT: Surprisingly witty and adaptable but needed editing for brand tone.

  • Copy.ai: Quick and punchy, but often veered into “infomercial” territory.

None of them delivered perfect, ready-to-run copy. All three needed human editing to add brand personality, emotional hooks, and real persuasion.

AI is a great starting point, especially for brainstorming or breaking writer’s block. But if you want copy that truly converts, you still need a skilled marketer to craft a message that cuts through the noise.

Want copy that sells, not just fills space? At BMulls, we blend data, strategy, and a human touch AI can’t replicate. Book a free consult today, and let’s write words that actually work.

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