Launching PromptLens: Prompt Testing for AI Builders

Hey Indie Hackers! 👋 I'm Akshit, solo dev from Dubai. Tired of manual prompt tweaks causing regressions in my AI projects, I built PromptLens – a platform to test, compare, and optimize LLM prompts like code.

Why?

Prompts are key, but testing is chaotic: no automation, no diffs, no cross-model benchmarks (GPT, Claude, etc.).

Features

• Side-by-side comparisons across models.

• Automated regressions with test suites.

• Visual diffs for outputs.

• Collaboration and version tracking.

Built with Next.js/Node.js on Vercel. Cost: <$500.

Pricing

• Free: 3 projects, 50 evaluations/month, 3 share links.

• Pro: $99/month – Unlimited projects/evaluations/share links, 10 team members, version comparison.

Try promptlens.io.

Feedback? What prompt pains do you have?

Akshit @akshit_io