Post: Promptfoo


Last Updated: September 29, 2023Categories: Prompts2 min read

Promptfoo: Enhancing Language Model Mathematics Prompts

Promptfoo is an indispensable library tailored for testing and enhancing the effectiveness of Language Model Mathematics (LLM) prompts. It provides users with robust tools to assess prompt quality and model output, ultimately leading to improved results.

Promptfoo Features

  • Test Case Creation: Users can create a list of test cases using a representative sample of user inputs, minimizing subjectivity in prompt fine-tuning.
  • Evaluation Metrics: Promptfoo offers flexibility in setting up evaluation metrics. Users can choose from built-in metrics or define custom ones to meet specific needs.
  • Prompt and Model Comparison: Users can conveniently compare prompts and model outputs side-by-side, facilitating prompt and model selection.
  • Integration-friendly: The library seamlessly integrates into existing testing or continuous integration (CI) workflows, ensuring a smooth and efficient process.
  • Web Viewer and CLI: Promptfoo offers both a web viewer and a command-line interface, catering to different user preferences and needs.
  • Proven Trustworthiness: Trusted by LLM applications serving over 10 million users, Promptfoo demonstrates its reliability and popularity within the LLM community.

Use Cases

  • 🔍 Quality Assurance: Ensure prompt quality and enhance model outputs by leveraging automated assessments.
  • 📊 Custom Metrics: Define custom evaluation metrics to align with specific objectives and requirements.
  • 🤝 Objective Decision-making: Compare prompts and model outputs objectively, aiding in prompt and model selection.


Promptfoo is a versatile library that empowers users to evaluate and enhance LLM prompts and model outputs. With features such as test case creation, customizable metrics, and side-by-side comparisons, Promptfoo ensures prompt quality and facilitates objective decision-making. Its seamless integration into existing workflows and proven reliability make it an essential tool for anyone seeking to improve LLM prompt quality and achieve superior model outputs.


Q: What is Promptfoo?

A: Promptfoo is a library designed for testing and enhancing Language Model Mathematics (LLM) prompts.

Q: What are the key features of Promptfoo?

A: Promptfoo offers features such as test case creation, evaluation metrics, prompt and model comparison, integration-friendly design, and both web viewer and command-line interface options.

Q: How can Promptfoo benefit users?

A: Promptfoo allows users to ensure prompt quality, define custom evaluation metrics, make objective decisions, seamlessly integrate into existing workflows, and benefit from a tool trusted by the LLM community.

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