promptfoo: Is It Still Maintained in 2026?
Ownership changedpromptfoo is an open-source AI Red Teaming tool from Promptfoo (a subsidiary of OpenAI as of March 2026) — MIT, written in TypeScript, built for Prompt/agent/RAG testing and LLM red-teaming — vulnerability scanning, eval, and CI/CD security testing for AI applications. As of 2026-07-13, its repository status is "Ownership changed". Stars and last-push date are pulled live from the GitHub API.
Repository snapshot
- 23,165
- GitHub stars
- 2026-07-12
- Last push
- 0.121.18
- Latest release
- MIT
- License
- TypeScript
- Language
- Ownership changed
- Status
Repo: promptfoo/promptfoo · Prompt/agent/RAG testing and LLM red-teaming — vulnerability scanning, eval, and CI/CD security testing for AI applications · pulled live as of , refreshed weekly
What promptfoo does
Prompt/agent/RAG testing and LLM red-teaming — vulnerability scanning, eval, and CI/CD security testing for AI applications Promptfoo (a subsidiary of OpenAI as of March 2026) maintains it under the MIT license. Commercial vendors covering the same ground are scored, cell by cell, in the OWASP LLM Top 10 coverage matrix.
Status note: promptfoo is flagged "Ownership changed". Check the repo before you build a pipeline on it. (Confirmed via multiple outlets (OpenAI's own announcement openai.com/index/openai-to-acquire-promptfoo, TechCrunch, CNBC, Forbes, Futurum) that OpenAI announced acquisition of Promptfoo on March 9, 2026, to embed it into OpenAI Frontier. Repo itself remains at promptfoo/promptfoo, not archived, actively pushed (2026-07-12), MIT license unchanged.)
Install & source
Repository: https://github.com/promptfoo/promptfoo
Frequently asked questions
Is promptfoo still maintained in 2026?
As of 2026-07-12, promptfoo's repository is flagged "Ownership changed". Check the latest push date on GitHub before you rely on it.
What license is promptfoo under?
promptfoo runs under the MIT license, maintained by Promptfoo (a subsidiary of OpenAI as of March 2026).
What is promptfoo used for?
Prompt/agent/RAG testing and LLM red-teaming — vulnerability scanning, eval, and CI/CD security testing for AI applications. It sits in the AI Red Teaming category.