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.

Wispr Flow: Dictation That Works Everywhere — Stop typing. Start speaking. 4x faster.

Stop typing. Start speaking. 4x faster.

Hey Product Hunt 👋, I built plenz because I kept seeing the same pattern in AI workflows: the model was getting blamed for weak output when the real issue was usually a vague prompt upstream. plenz helps improve prompts inline before you hit send, inside the workflow people already use. The goal is simple: better first-pass output without pushing users into a separate prompt editor. What makes it different: - inline prompt refinement - open source - BYOK and provider choice - privacy-first setup without a required central plenz prompt-processing backend I would especially love feedback on: 1. whether the inline suggestion flow feels genuinely helpful 2. whether setup is clear enough for a first-time user 3. which platform or provider we should prioritize next Happy to answer anything and ship fixes based on feedback.

Wispr Flow: Dictation That Works Everywhere — Stop typing. Start speaking. 4x faster.

Stop typing. Start speaking. 4x faster.

plenz

ai prompt refiner

ai prompt refiner