
promptfoo
Test your prompts, agents, and RAGs. Red teaming, pentesting, and vulnerability scanning for LLMs. Compare performance of GPT, Claude, Gemini, Llama, and more. Simple declarative configs with command line and CI/CD integration.
Stars: 5932

Promptfoo is a tool for testing and evaluating LLM output quality. With promptfoo, you can build reliable prompts, models, and RAGs with benchmarks specific to your use-case, speed up evaluations with caching, concurrency, and live reloading, score outputs automatically by defining metrics, use as a CLI, library, or in CI/CD, and use OpenAI, Anthropic, Azure, Google, HuggingFace, open-source models like Llama, or integrate custom API providers for any LLM API.
README:
promptfoo
is a developer-friendly local tool for testing LLM applications. Stop the trial-and-error approach - start shipping secure, reliable AI apps.
# Install and initialize project
npx promptfoo@latest init
# Run your first evaluation
npx promptfoo eval
See Getting Started (evals) or Red Teaming (vulnerability scanning) for more.
- Test your prompts and models with automated evaluations
- Secure your LLM apps with red teaming and vulnerability scanning
- Compare models side-by-side (OpenAI, Anthropic, Azure, Bedrock, Ollama, and more)
- Automate checks in CI/CD
- Share results with your team
Here's what it looks like in action:
It works on the command line too:
It also can generate security vulnerability reports:
- π Developer-first: Fast, with features like live reload and caching
- π Private: Runs 100% locally - your prompts never leave your machine
- π§ Flexible: Works with any LLM API or programming language
- πͺ Battle-tested: Powers LLM apps serving 10M+ users in production
- π Data-driven: Make decisions based on metrics, not gut feel
- π€ Open source: MIT licensed, with an active community
- π Full Documentation
- π Red Teaming Guide
- π― Getting Started
- π» CLI Usage
- π¦ Node.js Package
- π€ Supported Models
We welcome contributions! Check out our contributing guide to get started.
Join our Discord community for help and discussion.
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