To start using Promptfoo for testing LLM prompts, download it from the official website, install it on your system, and configure either the Command Line Interface (CLI) or the web UI. You can then begin testing your prompts using the evaluation tools provided by Promptfoo.

Key Points

• Download and Installation: Obtain Promptfoo from the official site.
• Configuration: Set up the CLI or web UI for testing.
• Evaluation Tools: Utilize the built-in tools for prompt evaluation.

Detailed Explanation

To effectively start using Promptfoo, follow these steps:

1. Download Promptfoo: Visit the official Promptfoo website and download the latest version compatible with your operating system (Windows, macOS, or Linux). Ensure that your system meets the required specifications.

2. Installation: After downloading, extract the files and follow the installation instructions provided for your platform. For CLI users, you may need to run installation commands in your terminal. For web UI users, simply open the application in your web browser.

3. Configuration:

   • CLI Setup: If you choose the Command Line Interface, open your terminal and navigate to the Promptfoo directory. You can configure your environment variables and install dependencies with commands like npm install or pip install depending on your setup.
   • Web UI Setup: For the web UI, navigate to the designated URL after installation and ensure your browser settings allow the necessary permissions for optimal functionality.

4. Testing LLM Prompts: Once set up, you can start creating and testing prompts. Promptfoo provides various evaluation tools, such as:

   • Prompt Evaluation: Test the effectiveness of your prompts against different language models.
   • Performance Metrics: Analyze results based on accuracy, relevance, and responsiveness.

5. Iterate and Improve: Based on the results from your evaluations, refine your prompts to enhance performance. Utilize the feedback provided by Promptfoo to make data-driven adjustments.

Best Practices / Tips

• Start Simple: Begin with basic prompts to understand how Promptfoo evaluates them before gradually introducing complexity.
• Use Version Control: Keep track of different prompt versions to easily identify what changes lead to better performance.
• Experiment with Variations: Test different phrasings or formats for your prompts to see which yields the best results.
• Stay Updated: Regularly check for updates to Promptfoo to leverage new features and improvements.

Additional Resources

• Promptfoo Documentation
• GitHub Repository for community support and contributions
• AI Prompt Engineering Guide for best practices in prompt creation