---
description: Dive into the intricacies of YOLO tasks.py. Learn about DetectionModel, PoseModel and more for powerful AI development.
keywords: Ultralytics, YOLO, nn tasks, DetectionModel, PoseModel, RTDETRDetectionModel, model weights, parse model, AI development
---

# Reference for `ultralytics/nn/tasks.py`

!!! success "Improvements"

    This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/tasks.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/tasks.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.tasks.BaseModel

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## ::: ultralytics.nn.tasks.DetectionModel

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## ::: ultralytics.nn.tasks.OBBModel

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## ::: ultralytics.nn.tasks.SegmentationModel

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## ::: ultralytics.nn.tasks.PoseModel

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## ::: ultralytics.nn.tasks.ClassificationModel

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## ::: ultralytics.nn.tasks.RTDETRDetectionModel

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## ::: ultralytics.nn.tasks.WorldModel

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## ::: ultralytics.nn.tasks.YOLOEModel

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## ::: ultralytics.nn.tasks.YOLOESegModel

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## ::: ultralytics.nn.tasks.Ensemble

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## ::: ultralytics.nn.tasks.SafeClass

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## ::: ultralytics.nn.tasks.SafeUnpickler

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## ::: ultralytics.nn.tasks.temporary_modules

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## ::: ultralytics.nn.tasks.torch_safe_load

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## ::: ultralytics.nn.tasks.load_checkpoint

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## ::: ultralytics.nn.tasks.parse_model

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## ::: ultralytics.nn.tasks.yaml_model_load

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## ::: ultralytics.nn.tasks.guess_model_scale

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## ::: ultralytics.nn.tasks.guess_model_task

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