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Ultralytics YOLOv8 is the latest version of the YOLO object detection and image segmentation model developed by Ultralytics. YOLOv8 is a cutting-edge, state-of-the-art (SOTA) model that builds upon the success of previous YOLO versions and introduces new features and improvements to further boost performance and flexibility.

The YOLOv8 models are designed to be fast, accurate, and easy to use, making them an excellent choice for a wide range of object detection, image segmentation and image classification tasks.

Whether you are a seasoned machine learning practitioner or new to the field, we hope that the resources on this page will help you get the most out of YOLOv8.

Documentation

See below for quickstart intallation and usage example, and see the YOLOv8 Docs for full documentation on training, validation, prediction and deployment.

Install

Pip install the ultralytics package including all requirements.txt in a Python>=3.7.0 environment, including PyTorch>=1.7.

pip install ultralytics

Usage

YOLOv8 may be used in a python environment:

from ultralytics import YOLO

model = YOLO("yolov8n.pt")  # load a pretrained YOLOv8n model

model.train(data="coco128.yaml")  # train the model
model.val()  # evaluate model performance on the validation set
model.predict(source="https://ultralytics.com/images/bus.jpg")  # predict on an image
model.export(format="onnx")  # export the model to ONNX format

Or with CLI yolo commands:

yolo task=detect    mode=train    model=yolov8n.pt        args...
          classify       predict        yolov8n-cls.yaml  args...
          segment        val            yolov8n-seg.yaml  args...
                         export         yolov8n.pt        format=onnx  args...

Models download automatically from the latest Ultralytics release.

Checkpoints

All YOLOv8 pretrained models are available here. Detection and Segmentation models are pretrained on the COCO dataset, while Classification models are pretrained on the ImageNet dataset.

Models download automatically from the latest Ultralytics release on first use.

Detection

Model	size (pixels)	mAPval 50-95	Speed CPU (ms)	Speed T4 GPU (ms)	params (M)	FLOPs (B)
YOLOv8n	640	37.3	-	-	3.2	8.7
YOLOv8s	640	44.9	-	-	11.2	28.6
YOLOv8m	640	50.2	-	-	25.9	78.9
YOLOv8l	640	52.9	-	-	43.7	165.2
YOLOv8x	640	53.9	-	-	68.2	257.8

• mAP^val values are for single-model single-scale on COCO val2017 dataset.
  Reproduce by yolo mode=val task=detect data=coco.yaml device=0
• Speed averaged over COCO val images using an Amazon EC2 P4d instance.
  Reproduce by yolo mode=val task=detect data=coco128.yaml batch=1 device=0/cpu

Segmentation

Model	size (pixels)	mAPbox 50-95	mAPmask 50-95	Speed CPU (ms)	Speed T4 GPU (ms)	params (M)	FLOPs (B)
YOLOv8n	640	36.7	30.5	-	-	3.4	12.6
YOLOv8s	640	44.6	36.8	-	-	11.8	42.6
YOLOv8m	640	49.9	40.8	-	-	27.3	110.2
YOLOv8l	640	52.3	42.6	-	-	46.0	220.5
YOLOv8x	640	53.4	43.4	-	-	71.8	344.1

• mAP^val values are for single-model single-scale on COCO val2017 dataset.
  Reproduce by yolo mode=val task=detect data=coco.yaml device=0
• Speed averaged over COCO val images using an Amazon EC2 P4d instance.
  Reproduce by yolo mode=val task=detect data=coco128.yaml batch=1 device=0/cpu

Classification

Model	size (pixels)	acc top1	acc top5	Speed CPU (ms)	Speed T4 GPU (ms)	params (M)	FLOPs (B) at 640
YOLOv8n	224	66.6	87.0	-	-	2.7	4.3
YOLOv8s	224	72.3	91.1	-	-	6.4	13.5
YOLOv8m	224	76.4	93.2	-	-	17.0	42.7
YOLOv8l	224	78.0	94.1	-	-	37.5	99.7
YOLOv8x	224	78.4	94.3	-	-	57.4	154.8

• mAP^val values are for single-model single-scale on ImageNet dataset.
  Reproduce by yolo mode=val task=detect data=coco.yaml device=0
• Speed averaged over ImageNet val images using an Amazon EC2 P4d instance.
  Reproduce by yolo mode=val task=detect data=coco128.yaml batch=1 device=0/cpu

Integrations

Roboflow	ClearML ⭐ NEW	Comet ⭐ NEW	Neural Magic ⭐ NEW
Label and export your custom datasets directly to YOLOv8 for training with Roboflow	Automatically track, visualize and even remotely train YOLOv8 using ClearML (open-source!)	Free forever, Comet lets you save YOLOv8 models, resume training, and interactively visualise and debug predictions	Run YOLOv8 inference up to 6x faster with Neural Magic DeepSparse

Ultralytics HUB

Ultralytics HUB is our ⭐ NEW no-code solution to visualize datasets, train YOLOv8 🚀 models, and deploy to the real world in a seamless experience. Get started for Free now! Also run YOLOv8 models on your iOS or Android device by downloading the Ultralytics App!

Contribute

We love your input! YOLOv5 and YOLOv8 would not be possible without help from our community. Please see our Contributing Guide to get started, and fill out our Survey to send us feedback on your experience. Thank you 🙏 to all our contributors!

License

YOLOv8 is available under two different licenses:

• GPL-3.0 License: See LICENSE file for details.
• Enterprise License: Provides greater flexibility for commercial product development without the open-source requirements of GPL-3.0. Typical use cases are embedding Ultralytics software and AI models in commercial products and applications. Request an Enterprise License at Ultralytics Licensing.

Contact

For YOLOv8 bugs and feature requests please visit GitHub Issues. For professional support please Contact Us.