Darknet supports GPU and thus complex models. It is not intended as a library in my understanding. As last time I checked, tiny-dnn is built on top of "layers",

Darknet supports GPU and thus complex models. It is not intended as a library in my understanding. As last time I checked, tiny-dnn is built on top of "layers", not general computational graph. This greatly limits its functionality. Its implementation is fairly inefficient, too.