Promptfoo

Active. Promptfoo announced on March 9, 2026 that it agreed to be acquired by OpenAI and will remain open source; confirm deal closing and contracting entity in diligence.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

• Open-source CLI for evals of prompts, models, and RAG pipelines, with assertions and CI/CD integration
• Model-graded assertions such as llm-rubric (LLM-as-a-judge) and G-Eval
• Red teaming and vulnerability scanning (up to 10k probes per month on Community)
• Guardrails, MCP proxy, model security, and code scanning

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

• Developers who want config-driven evals that run locally and in CI
• Security teams adding red teaming of LLM apps and agents

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Community: free forever (open source; red teaming up to 10k probes per month). Enterprise: custom pricing (managed cloud, continuous monitoring, SSO). On-Premise: custom pricing.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

• SOC 2 Type II
• ISO 27001

Listed as stated by the vendor. Scope can differ by product or subsidiary; request current reports.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

• Pending or recent acquisition by OpenAI; review roadmap and data-handling terms if you compete with OpenAI
• Enterprise and on-premise prices are not published

Sources 1, 2, 3, 4, 5 · checked 2026-11-08