fig = plt.figure(figsize=(16,4))
ax = fig.add_subplot(121)
ax.plot(history.history["val_loss"])
ax.plot(history2.history["val_loss"])
ax.set_title("validation loss")
ax.set_xlabel("epochs")

ax2 = fig.add_subplot(122)
ax2.plot(history.history["val_acc"])
ax2.plot(history2.history["val_acc"])
ax2.set_title("validation accuracy")
ax2.set_xlabel("epochs")
ax2.set_ylim(0, 1)

plt.show()