What this automation does
You provide your product description, target audience, campaign objective, and platform constraints. AI generates 20-50 ad copy variations — headlines, descriptions, CTAs — formatted for Google Ads, Facebook Ads, or LinkedIn Ads. Each variation takes a different angle: pain point, benefit, social proof, urgency, or curiosity.
The biggest lever in paid advertising is creative testing. Most teams only test 3-5 variations because writing ad copy is tedious. This automation lets you test 20-50 variations per campaign, dramatically increasing your chances of finding a high-performing creative.
Tools you need
- Google Sheets: Input your product info and receive generated copy in organized columns
- OpenAI API: GPT-4 generates ad copy variations ($0.05-0.15 per batch of 20 variations)
- Make or Apps Script: Automates the generation and organizes output by platform and angle
How to set it up
Step 1: Create a Google Sheet with input columns: product name, description, target audience, key benefits (3-5), campaign objective (awareness, conversions, sign-ups), and platform (Google, Facebook, LinkedIn). Fill in one row per campaign.
Step 2: Write an OpenAI prompt template that takes these inputs and generates variations. Specify the platform's character limits — Google Ads headlines are 30 characters, descriptions 90 characters. Facebook allows more space. Ask for 10 variations per angle: pain point, benefit, social proof, urgency, and curiosity.
Step 3: Use Google Apps Script or Make to send each campaign row to OpenAI and write the results back to the sheet. Organize output columns by platform and variation type so your media buyer can quickly copy-paste into the ad platform.
Step 4: Add a quality filter — ask OpenAI to also rate each variation on a 1-5 scale for relevance and persuasion. Sort by rating to surface the strongest options first. Review the top 20 and upload to your ad platform for A/B testing.
Cost breakdown
| Item | Cost | Notes |
|---|---|---|
| OpenAI API | $10-$20/mo | ~$0.10 per batch, 5-10 campaigns/mo |
| Google Sheets | $0 | Free with Google Workspace |
| Make (optional) | $0-$10/mo | Free tier covers light usage |
| Setup time | 25-45 min | One-time |
| Total monthly | $10-$30/mo | Replaces 4+ hours/week of copywriting |
Frequently asked questions
AI-generated copy performs comparably to human-written copy in A/B tests — the advantage is volume. By testing 50 variations instead of 5, you find winners faster. The AI handles the first draft; you refine the top performers. Most teams see 15-30% improvement in CTR within the first month of expanded testing.
Yes, but you need to include compliance requirements in your prompt. For healthcare, finance, or alcohol advertising, specify the regulations and prohibited claims. The AI will follow guidelines, but always have a compliance review step before publishing regulated ads.