PyTorch vs TensorFlow: https://awni.github.io/pytorch-tensorflow/
Discussion: https://www.reddit.com/r/MachineLearning/comments/6ulu8c/d_pytorch_or_tensorflow/
PyTorch vs TensorFlow Summary
PyTorch is better for rapid prototyping in research, for hobbyists and for small scale projects. TensorFlow is better for large-scale deployments, especially when cross-platform and embedded deployment is a consideration.
PS. For fast prototyping and tons of available tutorials you may want to try Keras (kerаs.io) too..