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 →

8.7

GitHub Metrics

Stars

23.4k

Forks

2.1k

Open Issues

419

Watchers

Contributors

320

Weekly Commits

Language

TypeScript

License

MIT

Last Commit

Jul 18, 2026

Created

Apr 28, 2023

Latest Release

0.121.19

Release Date

Jul 14, 2026

Synced: Jul 18, 2026

Quality Scores

Documentation Qualityw: 20%

8.7

Has docs site (https://promptfoo.dev). Description: 230 chars. Stars signal: 23,388. Contributors: 320. Score: 8.7/10

Community Healthw: 20%

8.6

Stars: 23,388. Contributors: 320. Watchers: 59. Forks: 2,091. Issue ratio: 1.8%. Score: 8.6/10

Maintenance Velocityw: 15%

9.8

Last commit: 0d ago. Weekly commits: 70. Latest release: 0.121.19. Maturity bonus: 3.2y old. Score: 9.8/10

API Design & DXw: 20%

8.3

Stars/issues ratio: 56. Typed language: TypeScript. Has documentation site. Permissive license: MIT. Popularity signal: 23,388 stars. Score: 8.3/10

Production Readinessw: 15%

8.4

Battle-tested: 23,388 stars. Peer review: 320 contributors. Versioned: 0.121.19. Licensed: MIT. Age: 3.2 years. Maintenance: last commit 0d ago. Score: 8.4/10

Ecosystem Integrationw: 10%

8.6

Fork interest: 2,091. Major ecosystem: TypeScript. Integration-friendly: MIT. Adoption: 23,388 stars. Has web presence. Score: 8.6/10