promptfoo/promptfoo

Prompt Engineering

Test your prompts, agents, and RAGs. AI Red teaming, pentesting, and vulnerability scanning for LLMs. Compare performance of GPT, Claude, Gemini, Llama, and more. Simple declarative configs with command line and CI/CD integration.

GitHub →Website →

8.6

GitHub Metrics

Stars

24.6k

Forks

2.2k

Open Issues

535

Watchers

Contributors

324

Weekly Commits

Language

TypeScript

License

MIT

Last Commit

Aug 28, 2026

Created

Apr 28, 2023

Latest Release

0.122.1

Release Date

Aug 26, 2026

Synced: Aug 28, 2026

Quality Scores

Documentation Qualityw: 20%

8.7

Has docs site (https://promptfoo.dev). Description: 230 chars. Stars signal: 24,623. Contributors: 323. Score: 8.7/10

Community Healthw: 20%

8.6

Stars: 24,623. Contributors: 323. Watchers: 66. Forks: 2,237. Issue ratio: 2.2%. Score: 8.6/10

Maintenance Velocityw: 15%

9.8

Last commit: 0d ago. Weekly commits: 43. Latest release: 0.122.1. Maturity bonus: 3.3y old. Score: 9.8/10

API Design & DXw: 20%

8.0

Stars/issues ratio: 46. Typed language: TypeScript. Has documentation site. Permissive license: MIT. Popularity signal: 24,623 stars. Score: 8/10

Production Readinessw: 15%

8.4

Battle-tested: 24,623 stars. Peer review: 323 contributors. Versioned: 0.122.1. Licensed: MIT. Age: 3.3 years. Maintenance: last commit 0d ago. Score: 8.4/10

Ecosystem Integrationw: 10%

8.6

Fork interest: 2,237. Major ecosystem: TypeScript. Integration-friendly: MIT. Adoption: 24,623 stars. Has web presence. Score: 8.6/10