PyTorch
PyTorch is the dominant deep learning framework used by most AI researchers and increasingly in production. Its dynamic computation graph and Pythonic API make it the easiest framework to learn and debug. Nearly every major open-source model (Llama, Stable Diffusion, Whisper) is built on PyTorch.
AI ToolFree Tier: BSD-3Company: Meta / PyTorch FoundationCategory: Open-Source ModelsOpen Source: YesQuick Start: Install with 'pip install torch' → Follow the 60-minute blitz tutorial at pytorch.org/tutorials → Build your first neural network with torch.nnVisit PyTorch