PromptLab
ExtensionWorkflow & Planning
Overview
Improve your AI prompts with A/B testing — powered by PromptLab
Improve your AI prompts instantly with data-backed A/B testing. PromptLab watches as you type in ChatGPT or Claude. Click "✦ Improve with PromptLab" and we'll automatically generate 2 improved versions of your prompt, score all three using GPT-4o, and show you the winner — so you always send the best possible prompt. Features: - Works on ChatGPT and Claude - Generates 2 improved prompt versions instantly - A/B tests and scores each version (1–5) on clarity, specificity, and effectiveness - Shows you both versions so you can pick your favorite - One-click prompt replacement
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Details
- Version1.0
- UpdatedAugust 19, 2026
- Size1.56MiB
- LanguagesEnglish
- Developer
Email
dhcjfals0715@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes