---
description: Understand routines at the end of pre-training and training in Ultralytics. Elevate your MLflow callbacks expertise.
keywords: Ultralytics, MLflow, Callbacks, on_pretrain_routine_end, on_train_end, Machine Learning, Training
---

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

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

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