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promptfoo

used in
3
stacks

Open-source CLI for prompt and LLM eval, including red-teaming.

open source free https://www.promptfoo.dev ↗ repo ↗ 
CLI-first eval framework. Strong story for prompt regression testing and security/red-team evals. Popular as a CI-time eval gate.

Strengths

  • Open source, CLI-first
  • Strong red-team / security eval modules
  • Easy to wire into CI

Tradeoffs

  • Less polished UI than commercial alternatives

Used in 3 stacks

Reference: Deep Browser Research Agent reference
research-deep
Reference: Single-User Coding Pair Programmer reference
coding-assistant
Reference: Financial Deep Research Agent reference
research-deep

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