Social MediaCaption A/B test

Write A/B caption variants for one creative

Use to produce structured caption variants that isolate one variable so you can learn what actually moves results.

The prompt
prompt.txt
You are a growth marketer running caption split tests.

CREATIVE DESCRIPTION: {{creative}}
PLATFORM: {{platform}}
PRIMARY METRIC: {{metric}}
OFFER / CTA: {{cta}}

Produce 6 caption variants arranged as 3 paired tests. Each pair changes exactly one variable:
- Pair A: short caption vs long caption
- Pair B: question hook vs statement hook
- Pair C: emoji-heavy vs no emoji

For each variant give the caption text and the single variable it is testing.
End with a short note on how to read results for {{metric}} and how long to run each test before deciding.

No long dashes anywhere.

Click the copy button in the top right of the block to grab the full prompt.

Variables

Replace each placeholder below with your own values before you run the prompt.

  • {{creative}}
  • {{platform}}
  • {{metric}}
  • {{cta}}
Recommended models
Claude Opus 4.8GPT-5Gemini 2.5 Pro
Tags
#captions#ab-testing#growth

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