← Back to Directory
✨
Promptfoo
LLM Orchestrators
Overview
A CLI tool and library for testing and evaluating LLM outputs. It allows developers to run systematic benchmarks across different prompts and models to ensure quality and prevent regressions.
Promptfoo is an open-source CLI and library for systematically testing prompts and models, running evaluations and red-teaming to catch regressions before they ship. It treats prompt quality like unit tests, with reproducible benchmarks and assertions. It targets developers who want rigor instead of guesswork.
Key Features
- Prompt and model evaluation as tests
- Side-by-side benchmark comparisons
- Assertions and scoring
- Security red-teaming
- CI integration
Best For
Developers who want reproducible, automated testing of prompts and models.
Pros & Cons
Pros
- Brings unit-test rigor to prompts
- Open-source and CI-friendly
- Includes security testing
Cons
- Requires defining good test cases
- Developer-oriented workflow
Advertisement
Pulse Verdict
“The unit testing standard for prompts. Promptfoo eliminates 'vibe-based' development by providing a fast, reproducible way to measure model performance.”
Pricing
Open-source and free; enterprise offering available.
Pricing changes often — confirm current plans on the official site.