---
title: Python API
parent: API docs
grand_parent: Reference
nav_order: 5
---

# ONNX Runtime Python API
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## Contents
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## Supported Versions
Python 3.6 - 3.9

## Builds
If using pip, run pip install `--upgrade pip` prior to downloading.	 

| Artifact      | Description | Supported Platforms |
|-----------    |-------------|---------------------|
|[onnxruntime](https://pypi.org/project/onnxruntime)|CPU (Release)| Windows (x64), Linux (x64, ARM64), Mac (X64),  |
|[ort-nightly](https://test.pypi.org/project/ort-nightly)|CPU (Dev)    | Same as above |
|[onnxruntime-gpu](https://pypi.org/project/onnxruntime-gpu)|GPU (Release)| Windows (x64), Linux (x64, ARM64) |
|[ort-gpu-nightly](https://test.pypi.org/project/ort-gpu-nightly)|GPU (Dev) | Same as above |


For Python compiler version notes, see [this page](https://github.com/microsoft/onnxruntime/tree/master/docs/Python_Dev_Notes.md)

## API Reference

[https://www.onnxruntime.ai/python](https://www.onnxruntime.ai/python/)

## Samples
See [Tutorials: API Basics - Python](../../tutorials/inferencing/api-basics.md#python)