Secure and Reliable LLMs with promptfoo

Promptfoo is an open-source LLM testing tool used by over 40,000 developers to secure and improve the reliability of their large language model (LLM) applications. It offers a comprehensive suite of features for testing, evaluation, and continuous monitoring, ensuring your LLM applications are robust and safe.

Key Features

• Automated Red Teaming: Promptfoo's automated red teaming capabilities allow you to run custom scans that detect security, legal, and brand risks. These scans dynamically adapt to your application, uncovering vulnerabilities such as PII leaks, insecure tool use, cross-session data leaks, prompt injections, and the generation of harmful content.
• Comprehensive Security Coverage: Go beyond generic jailbreaks and prompt injections. Promptfoo provides custom probes tailored to your application, identifying the specific failures that matter most to you.
• Developer-Friendly Interface: With a command-line interface, live reloads, and caching, promptfoo is designed for speed and efficiency. No SDKs, cloud dependencies, or logins are required.
• Open-Source and Battle-Tested: Promptfoo is 100% open-source and has been used by teams serving millions of users. It's backed by an active community, ensuring ongoing support and development.
• Easy Abstractions for Complex Testing: Promptfoo simplifies complex LLM testing with quality evaluations, pre-deployment security scans, and a simple declarative configuration. Test cases are generated to target specific use cases.
• Detailed, Actionable Results: Promptfoo provides detailed results, making it easy to identify and address vulnerabilities.

Use Cases

• Pre-deployment Security Scanning: Identify and mitigate risks before releasing your LLM application to the public.
• Continuous Monitoring: Regularly scan your application for new vulnerabilities and ensure ongoing security.
• LLM Evaluation: Assess the quality, factuality, and safety of your LLM's outputs.
• Red Teaming Exercises: Simulate real-world attacks to identify weaknesses in your application's security.

Comparisons

While other LLM testing tools exist, promptfoo distinguishes itself through its open-source nature, developer-centric design, and comprehensive security coverage. Many competitors require cloud dependencies or proprietary SDKs, adding complexity and cost. Promptfoo's focus on customizability allows for targeted testing, addressing specific concerns rather than relying on generic checks.

Getting Started

Promptfoo is easy to get started with. Simply use the command npx promptfoo@latest redteam init to begin your security assessment. The detailed documentation and active community provide ample support for users of all levels.

Conclusion

Promptfoo is a powerful and versatile tool for ensuring the security and reliability of your LLM applications. Its open-source nature, developer-friendly interface, and comprehensive features make it an invaluable asset for any team building and deploying LLMs.