Promptfoo

What is Promptfoo?

Promptfoo is an open-source testing and evaluation tool designed for Large Language Model (LLM) applications. This developer-focused platform helps teams build reliable AI systems through systematic testing and vulnerability detection.

Top Features:

• Automated Red Teaming: identifies security vulnerabilities and potential risks in LLM applications.
• Test-Driven Development: enables systematic testing of prompts against predefined test cases for quality assurance.
• Multi-Provider Support: works with OpenAI, Anthropic, Azure, Google, and other LLM providers.

Pros and Cons

Pros:

• Local Operation: runs completely on your machine with no cloud dependencies required.
• Developer Experience: includes features like live reloading, caching, and concurrent API calls.
• Wide Adoption: trusted by over 25,000 users at major companies like Shopify and Amazon[2].

Cons:

• Learning Curve: requires technical knowledge to set up and configure effectively.
• Command Line Interface: may not suit users who prefer graphical interfaces.
• Documentation Depth: some advanced features need more detailed documentation and examples.

Use Cases:

• Security Testing: detecting PII leaks and unauthorized prompt manipulations in LLM systems.
• Quality Assurance: benchmarking and comparing different prompts and model outputs.
• CI/CD Integration: automating prompt testing in development workflows.

Who Can Use Promptfoo?

• AI developers: professionals building and maintaining LLM-powered applications.
• Security teams: specialists focusing on AI system vulnerabilities and protection.
• Quality engineers: testers ensuring consistent and reliable AI outputs.

Pricing:

• Free Version: open-source software available at no cost.
• Pricing Plan: completely free and open-source with no paid tiers.

Our Review Rating Score:

• Functionality and Features: 4.5/5
• User Experience (UX): 4.0/5
• Performance and Reliability: 4.5/5
• Scalability and Integration: 4.5/5
• Security and Privacy: 5.0/5
• Cost-Effectiveness and Pricing Structure: 5.0/5
• Customer Support and Community: 4.0/5
• Innovation and Future Proofing: 4.5/5
• Data Management and Portability: 4.0/5
• Customization and Flexibility: 4.5/5
• Overall Rating: 4.5/5

Final Verdict:

Promptfoo stands out as a powerful tool for LLM testing and security. Its open-source nature, combined with comprehensive testing capabilities and local operation, makes it an essential tool for AI development teams.

FAQs:

1) Is Promptfoo suitable for beginners in AI development?

While Promptfoo requires some technical knowledge, its straightforward configuration and documentation make it accessible for developers with basic AI experience.

2) Can Promptfoo work with custom LLM providers?

Yes, Promptfoo supports integration with custom API providers for any LLM API, beyond the standard supported providers.

3) How does Promptfoo handle data privacy?

All testing runs locally on your machine, ensuring complete data privacy and security without external dependencies.

4) What types of vulnerabilities can Promptfoo detect?

It detects PII leaks, prompt injections, jailbreaks, harmful content, and unauthorized tool usage in LLM applications.

5) Does Promptfoo support automated testing in CI/CD pipelines?

Yes, Promptfoo can be integrated into CI/CD workflows as either a CLI tool or library for automated testing.