Higher layers of TensorFlow and the primary TensorFlow API are implemented in Python. In addition to Python, there are APIs in C++, Java, and Go.

Over the years, TensorFlow has evolved from its beginnings as a machine learning and neural network library based on data flow graphs that had a high learning curve and a low-level API.

Google have also included a Keras compatibility API, allowing TensorFlow to work with this high level neural networks library.

TensorFlow has become the most popular tool and framework for machine learning in a short span of time. It enjoys tremendous popularity among ML engineers and developers.