plenz
ai prompt refiner
What it does
plenz is an open-source browser extension that acts as a real-time co-pilot for AI prompts. It helps you write better, more effective prompts by providing inline suggestions and one-click refinements. Built with a privacy-first, BYOK (Bring Your Own Key) model, it works across major AI chat platforms like ChatGPT, Claude, and Gemini.
Does a similar job
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Pretty Prompt 1.0 Extension and Web AppJan 2026 · pretty-prompt.com · ▲304Grammarly for prompting. Turn any text into perfect prompts.

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