---
description: Track model performance and metrics with MLflow in YOLOv5. Use callbacks like on_pretrain_routine_end or on_train_end to log information.
---

# on_pretrain_routine_end
---
:::ultralytics.yolo.utils.callbacks.mlflow.on_pretrain_routine_end
<br><br>

# on_fit_epoch_end
---
:::ultralytics.yolo.utils.callbacks.mlflow.on_fit_epoch_end
<br><br>

# on_train_end
---
:::ultralytics.yolo.utils.callbacks.mlflow.on_train_end
<br><br>