What is PromptEval
PromptEval is a technical prompt evaluation platform for LLMs. It works like a linter for prompts: paste your prompt, get a 0–100 score with a 4-dimension diagnostic, a list of critical issues, and surgical recommendations — in seconds, no setup required.
Why PromptEval exists
Teams running LLMs in production break agents because of poorly written prompts — and have no objective way to diagnose the problem. Most prompt engineering guides say "be specific", but none tell you exactly what is wrong with your current prompt.
PromptEval solves this with a repeatable score based on structural principles — not automatic rewriting. The goal is to give you understanding, not just a new version of the prompt.
What the product does
Who built this
7 years in data and machine learning, with experience at financial sector companies working on LLM agent architecture, RAG pipelines, and production evaluation systems.
PromptEval was born from a real need: teams running LLMs in production were breaking agents due to poorly written prompts, with no objective way to diagnose the problem.
The idea was to formalize the industry's technical criteria for reviewing production prompts (clarity, specificity, structure, robustness) into an automated, auditable, and repeatable score for any team working with LLMs.