Tool
promptfoo
Open-source CLI for prompt evals, regressions, and red-teaming
Why notable
CI-native prompt testing used widely in LLM eng
- Pricing
- Open Source
- Pricing detail
- MIT free; Team collab plan
- Platforms
- CLI / CI
- Best for
- Prompt regression tests in CI
- Source
- LLM eval guides 2026
- Confidence
- High