AI Marketing
6 minute read

9 Ways To Write Better AI Ad Copy That Converts

Written by

Grant Cooper

Founder at Cometly

Published on
May 16, 2025

In the world of digital advertising, attention is the currency—and copy is what earns it. With AI tools becoming a staple in marketers' toolkits, writing ad copy has never been faster. But speed doesn’t always equal results. The real challenge? Making AI ad copy that performs.

This article explores how to actually write effective AI-generated ad copy that resonates, stops the scroll, and drives clicks.

1. Start With Strategy, Not Software

Before you even prompt an AI to generate copy, clarify your intent.

  • What’s the campaign goal? (Brand awareness, clicks, conversions?)
  • Who’s the audience? (Demographics, pain points, desires?)
  • What platform are you writing for? (Meta, Google, TikTok, LinkedIn?)

These answers drive your tone, length, and structure. AI needs direction. Generic prompts create generic copy. Great AI ad copy starts with a great brief.

🔗 If you’re looking to improve ad performance beyond just copy, check out 30 Tips To Improve Ad Performance

2. Prompt Like a Marketer, Not a Programmer

Treat AI like a junior copywriter. Your prompt is the brief.

Bad prompt:

“Write an ad for running shoes.”

Great prompt:

“Write 3 Facebook ads for a $100 lightweight running shoe. Target 30–45-year-old men training for their first marathon. Focus on comfort and foot support.”

Want even better results? Include examples of your brand voice or high-performing past ads in your prompt.

3. Match the Copy to the Funnel Stage

AI is fast—but it needs to know when in the funnel your prospect is.

  • Top-of-funnel ads should hook with emotion, curiosity, or bold claims.
  • Middle-of-funnel ads should highlight benefits, address objections, and build trust.
  • Bottom-of-funnel ads should be clear, direct, and conversion-focused (urgency, social proof, strong CTA).

If you’re automating ad copy with AI, label each variant with its funnel stage and test accordingly.

🧠 Need help segmenting your marketing efforts? Here’s how to build a solid Customer Acquisition Funnel

4. Use AI for Variations, Not Final Drafts

AI is incredible at creating variations—not always the polished final copy. Use it to:

  • Brainstorm multiple angles (emotional, logical, fear-based, curiosity-driven)
  • Generate headline and CTA options
  • Rewrite for tone (playful, urgent, bold)

Then, edit ruthlessly. Combine the best elements, cut the fluff, and align with your brand voice.

5. Inject Real Data to Drive Specificity

The most powerful ad copy is specific. AI doesn’t inherently know your business metrics, customer reviews, or unique product stats—so give it those inputs.

Examples of useful details to feed into your prompt:

  • “Mention our 4.8-star rating from 12,000+ customers”
  • “Include that we’ve helped 250 SaaS brands book more demos”
  • “Say the average ROI increase is 38% in the first month”

This transforms AI copy from generic to persuasive.

🔗 Learn how to use your own data to track performance inside your Marketing Analytics Dashboard

6. Train AI to Write Like You

One overlooked tactic? Use AI to replicate your brand tone.

Take your highest-converting past ads and use this prompt:

“Analyze this ad and describe the tone, structure, and messaging style.”

Then prompt AI:

“Write 5 new Facebook ad variants in this exact tone and format.”

It works shockingly well—and keeps your brand voice consistent even at scale.

7. Optimize for the Platform Format

Each ad platform has its quirks:

  • Facebook & Instagram: Punchy intros, emoji use, 3–5 short paragraphs max
  • Google Search Ads: Keyword-focused, tight character limits, strong CTAs
  • YouTube pre-roll: Hook in the first 5 seconds, fast pacing
  • LinkedIn: B2B tone, credibility, stat-backed claims

When using AI to generate copy, always specify the platform in the prompt.

🔗 Running LinkedIn ads? Here’s a deep dive on LinkedIn Ad Benchmarks

8. Test Hooks, Not Just Headlines

AI makes it easy to test headline variations—but great marketers go deeper.

Use AI to test:

  • First lines that stop the scroll
  • Different lead-in stories or analogies
  • “If this sounds like you…” segments
  • CTA language: “Get started” vs. “Try it free”

Each micro-copy variation can influence performance. Use ad analytics to test results, then feed high-performers back into your AI prompts to scale what works.

9. Keep It Human With Final Touches

Even if your copy is 90% AI-generated, the last 10% must be human-edited. Look out for:

  • Repetitive phrasing
  • Awkward or robotic language
  • Filler or fluff
  • Weak or unclear CTAs

Read it aloud. Does it sound like a person wrote it? If not—edit until it does.

Need guidance turning AI insights into action? Explore how to leverage Ad Creative Insights to improve future campaigns.

Final Thoughts

AI can accelerate the ad copywriting process, but it can’t replace human instinct, brand knowledge, or strategic thinking. It’s a tool—not a shortcut.

When used properly, AI can generate ad copy that grabs attention, resonates with your target audience, and improves conversion performance. The secret? Treat it like a partner, not a robot. Want to track every interaction from first click to final conversion? A digital marketing strategy that tracks users across the web is essential for that level of insight.

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Want Your Ad Copy to Work Better?

Even the best AI ad copy won’t perform if your tracking is broken. Cometly helps ensure your ads are backed by accurate conversion data, so you know exactly what’s working—and what’s not.

👉 Start your free trial of Cometly and make every word of your ad copy count.

Cometly gives you:

  • Real-time conversion tracking
  • Multi-touch attribution models
  • Ad-level performance insights
  • Event tracking from every touchpoint

Make better marketing decisions with accurate data. Try Cometly free today.

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