Keras

PyTorch

TensorFlow

API Level

High

Low

High and Low

Architecture

Simple, concise, readable

Complex, less readable

Not easy to use

Datasets

Smaller datasets

Large datasets, high performance

Large datasets, high performance

Debugging

Simple network, so debugging is not often needed

Good debugging capabilities

Difficult to conduct debugging

Does It Have Trained Models?

Yes

Yes

Yes

Popularity

Most popular

Third most popular

Second most popular

Speed

Slow, low performance

Fast, high-performance

Fast, high-performance

Written In

Python

Lua

C++, CUDA, Python