Get learning rate of keras model

Use eval() from keras.backend:

import keras.backend as K
from keras.models import Sequential
from keras.layers import Dense

model = Sequential()
model.add(Dense(1, input_shape=(1,)))
model.add(Dense(1))
model.compile(loss="mse", optimizer="adam")

print(K.eval(model.optimizer.lr))

Output:

0.001