A prompt optimization tool for AI products — refine, constrain, and systematically improve prompts that power real applications.
Writing good prompts is surprisingly hard. Small wording changes cause large output swings, constraints are easy to forget, and there's no systematic way to iterate across a team.
PromptTune solves this with a guardrails-first approach:
- Input your prompt and define hard constraints (tone, length, format, boundaries)
- The tool refines the prompt to satisfy all constraints without breaking intent
- Powered by GPT-4o-mini on the backend for fast, cost-efficient optimization
Built for AI PMs, prompt engineers, and developer teams who ship LLM-powered features.
- Frontend: React / Next.js · Vite
- Backend: Node.js API · GPT-4o-mini (OpenAI)
- Deployment: Vercel
At TruDoc, I work with GPT-4 APIs daily to ship AI product features. I kept running into the same problem: prompts that worked in testing would drift in production when requirements changed. I wanted a tool that made prompt iteration structured and repeatable — so I built one.
1,000+ users have used it since launch.
Rohit Nair — Product Manager at TruDoc Healthcare (Dubai). I build AI side projects to stay sharp on the technical side of the products I manage.