[Testing over a dataset | 🦜️🛠️ LangSmith](https://docs.smith.langchain.com/prompt_engineering/how_to_guides/testing_over_dataset): LLM should read this page when testing prompts over a dataset, evaluating prompt performance, or running experiments with evaluators. This page explains how to test prompts over a dataset in the LangSmith Playground, select evaluators for the experiment, and run the experiment to evaluate prompt performance.

