---
title: nn.backends.pytorch API Reference
description: Explore PyTorchBackend and TorchScriptBackend for native PyTorch and TorchScript model inference in Ultralytics YOLO models.
keywords: Ultralytics, PyTorchBackend, TorchScriptBackend, PyTorch inference, TorchScript inference, .pt models, deep learning, YOLO
---

# Reference for `ultralytics/nn/backends/pytorch.py`

!!! success "Improvements"

    This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/backends/pytorch.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/backends/pytorch.py). Have an improvement or example to add? Open a [Pull Request](https://docs.ultralytics.com/help/contributing) — thank you! 🙏

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## ::: ultralytics.nn.backends.pytorch.PyTorchBackend

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## ::: ultralytics.nn.backends.pytorch.TorchScriptBackend

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