In this article, the author continues a three-part series on YOLOv8, focusing on evaluating model predictions. The evaluation process includes printing performance metrics, viewing concerning classes, and finding poorly performing samples. The author uses FiftyOne, an open-source computer vision toolkit, to analyze the quality of YOLOv8n detection model's predictions. They demonstrate how to evaluate a YOLOv8 model's performance on specific datasets and provide insights into improving the model's effectiveness for custom applications.