PyTorch is an open-source deep learning framework developed by Facebook’s AI Research lab (FAIR). It is designed to facilitate the development and training of neural network-based models, making it a popular choice among researchers and practitioners in artificial intelligence. PyTorch stands out for its dynamic computational graph, which allows for flexibility in building complex architectures during runtime. This feature, combined with its intuitive Python interface and comprehensive tensor operations, makes PyTorch user-friendly and efficient for both small and large-scale projects. Its rich ecosystem includes libraries for various applications, such as computer vision and natural language processing.