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Promptfoo

promptfoo.dev

Open-source red teaming and evals framework with CI/CD integration and compliance mappings

Active · verified June 2026

Categories Promptfoo serves

The B4 Index places Promptfoo in one category. Each category page lays out the build-versus-buy considerations for that decision.

AI Red Teaming & Adversarial Testing Platform Free open source; enterprise support plans custom
The B4 Index scores every software category on two axes, strategic differentiation and AI feasibility, to classify it Build, Buy, Bridge, or Beware. Vendor facts here are independent of that call. See the full methodology.