---
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`
!!! note
This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/tasks.py ](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/tasks.py ). If you spot a problem please help fix it by [contributing ](https://docs.ultralytics.com/help/contributing/ ) a [Pull Request ](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/nn/tasks.py ) 🛠️ . 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.Ensemble
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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.attempt_load_weights
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## ::: ultralytics.nn.tasks.attempt_load_one_weight
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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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