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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
---

# Reference for `ultralytics/utils/callbacks/neptune.py`

!!! note

    Full source code for this file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/neptune.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/neptune.py).

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## ::: ultralytics.utils.callbacks.neptune._log_scalars
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## ::: ultralytics.utils.callbacks.neptune._log_images
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## ::: ultralytics.utils.callbacks.neptune._log_plot
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## ::: ultralytics.utils.callbacks.neptune.on_pretrain_routine_start
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## ::: ultralytics.utils.callbacks.neptune.on_train_epoch_end
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## ::: ultralytics.utils.callbacks.neptune.on_fit_epoch_end
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## ::: ultralytics.utils.callbacks.neptune.on_val_end
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## ::: ultralytics.utils.callbacks.neptune.on_train_end
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