---
description: Explore exhaustive details about Ultralytics callbacks in Neptune, with specifics about scalar logging, routine start, and more.
keywords: Ultralytics, Neptune callbacks, on_train_epoch_end, on_val_end, _log_plot, _log_images, on_pretrain_routine_start, on_fit_epoch_end, on_train_end
---

## _log_scalars
---
### ::: ultralytics.utils.callbacks.neptune._log_scalars
<br><br>

## _log_images
---
### ::: ultralytics.utils.callbacks.neptune._log_images
<br><br>

## _log_plot
---
### ::: ultralytics.utils.callbacks.neptune._log_plot
<br><br>

## on_pretrain_routine_start
---
### ::: ultralytics.utils.callbacks.neptune.on_pretrain_routine_start
<br><br>

## on_train_epoch_end
---
### ::: ultralytics.utils.callbacks.neptune.on_train_epoch_end
<br><br>

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

## on_val_end
---
### ::: ultralytics.utils.callbacks.neptune.on_val_end
<br><br>

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