Launching today

PromptTools

Launching today

Free AI prompt tools + 21 dev utilities. No signup, ever.

1 follower

Free AI prompt tools + 21 dev utilities. No signup, ever.

1 follower

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Free prompt engineering tools for ChatGPT, Claude, and Gemini. Test a prompt on 8 real AI models side by side, calculate token costs across 15 models, score prompt quality, and browse 165+ tested prompts. Plus 21 free developer utilities — JSON formatter, JWT decoder, regex tester, and more. No signup, ever.

Free

Launch tags:Productivity•Developer Tools•Artificial Intelligence

Launch Team

Framer AI AgentsDesign and publish professional sites with AI

Promoted

Maker

📌

Hey Product Hunt! I built PromptTools because I was tired of copy-pasting prompts between ChatGPT, Claude, and Gemini just to see which one gave a better answer, then manually cleaning up the markdown junk that comes back. A couple tools I'm most proud of: Prompt Analyzer actually flags when you're using outdated chain-of-thought tricks that newer reasoning models don't need anymore and can even hurt. Prompt Compare runs the same prompt on 2 models side by side so you're not guessing which one's better for your use case. Everything's free with daily limits, no signup. Would love feedback on what's missing, especially from anyone doing this prompt-testing dance manually every day like I was.

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3d ago