Promptfoo: LLM evals & red teaming
promptfoo is a developer-friendly local tool for testing LLM applications. Stop the trial-and-error approach - start shipping secure, reliable AI apps.
Website 路
Getting Started 路
Red Teaming 路
Documentation 路
Discord
Quick Start
# 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.
What can you do with Promptfoo?
- 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
- Review pull requests for LLM-related security and compliance issues with code scanning
- 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:

Why Promptfoo?
- 馃殌 Developer-first: Fast, with features like live reload and caching
- 馃敀 Private: LLM evals run 100% locally - your prompts never leave your machine
- 馃敡 Flexible: Works with any LLM API or programming language
- 馃挭 Battle-tested: Powers LLM apps serving 10M+ users in production
- 馃搳 Data-driven: Make decisions based on metrics, not gut feel
- 馃 Open source: MIT licensed, with an active community
Learn More
Contributing
We welcome contributions! Check out our contributing guide to get started.
Join our Discord community for help and discussion.