Sequential API for creating the Keras model

In the sequential API, create the empty model with the following code:

model = Sequential()

You can now add the layers to this model, which we will see in the next section.

Alternatively, you can also pass all the layers as a list to the constructor. As an example, we add four layers by passing them to the constructor using the following code:

model = Sequential([ Dense(10, input_shape=(256,)), 
                    Activation('tanh'), 
                    Dense(10), 
                    Activation('softmax')
                   ])