What is it

Promptfoo is a JavaScript library designed to assess the effectiveness of Language Model Mathematics (LLM) prompts. It enables users to test, enhance, and objectively compare LLM prompts to optimize model outputs.

Key features

• Test case creation:

  Facilitate the creation of test cases using representative user inputs, reducing subjectivity in prompt fine-tuning.

• Evaluation metrics:

  Enable users to customize evaluation metrics to align with specific requirements, providing flexibility in prompt evaluation.

• Prompt and model comparison:

  Provide users with the ability to compare prompts and model outputs side-by-side, aiding in prompt and model selection.

• Integration-friendly:

  Seamlessly integrate into existing testing or continuous integration (CI) workflows for smooth and efficient evaluation processes.

• Web viewer and CLI:

  Offer both a web viewer and a command-line interface (CLI) to cater to diverse user preferences and needs.

• Proven trustworthiness:

  Trusted by LLM applications serving over 10 million users, demonstrating reliability and popularity within the LLM community.

Pros

• Quality assurance:

  Rigorous prompt assessments enhance model outputs, ensuring optimal performance.

• Custom metrics:

  Tailor evaluation metrics to specific objectives, providing targeted insights into prompt effectiveness.

• Objective decision-making:

  Eliminate subjectivity in prompt and model selection through objective comparisons and data-driven analysis.

• Seamless integration:

  Effortless integration into existing workflows streamlines the evaluation process, saving time and resources.

• User-friendly interface:

  Choose between a web viewer or command-line interface for convenient and efficient use.

Cons

• May require technical expertise to fully utilize its capabilities.

Summary

Promptfoo is a comprehensive tool for LLM prompt testing and enhancement. It empowers users to create test cases, customize evaluation metrics, compare prompts and models, and integrate seamlessly into their workflows. Trusted by a substantial user base, Promptfoo enables objective decision-making and the optimization of prompt quality for superior model outputs.