PyTorch is an open-source deep learning library developed by the Facebook AI Research Team in September 2016.
It is highly popular in both research and industry applications due to its dynamic computation graph, ease of use, and robust ecosystem of tools and libraries.
PyTorch can be used for various machine learning tasks, including deep learning, reinforcement learning, computer vision, and natural language processing.
Key features of PyTorch include tensors, which are GPU-supported multidimensional arrays, and Autograd, an automatic differentiation system crucial for training neural networks.