Your eval says the prompt works. That’s not the same as the prompt being good.

📰 Medium · Python

Learn to differentiate between a prompt that works and one that is good, and discover a library to measure the gap

intermediate Published 20 May 2026
Action Steps
  1. Evaluate your prompt using metrics beyond just 'it works'
  2. Use a library like the one mentioned to measure the gap between prompt functionality and quality
  3. Test your prompts with diverse inputs to identify potential issues
  4. Compare the performance of different prompts to determine which ones are truly effective
  5. Refine your prompts based on the results of your evaluation and testing
Who Needs to Know This

NLP engineers and data scientists can benefit from understanding the nuances of prompt evaluation to improve their models' performance

Key Insight

💡 A prompt that works is not necessarily a good prompt, and measuring its quality is crucial for optimal model performance

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📊 Don't just check if your prompt works, evaluate its quality too! 🤖
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