Evaluate, score, and optimize prompts before you run them.
Score any prompt for clarity, specificity, constraints, and testability before you run it.
Estimate token costs and suggest ways to reduce spend without losing output quality.
Identify failure modes, hallucination risks, and missing guardrails in your prompt.
Generate A/B variants of a prompt with measurable differences in tone, structure, and constraints.
Install our Chrome extension and get instant prompt improvement on any website you use.
Try free without login. No credit card required.