I don't think that it is neather.It could be both. Buddhism dose and does not depend on the existence of a God who created the universe.They focus on their way of life and reaching enlightenment. Some buddhists believe in God or gods while others can be atheists.
Buddha was never introduced to the idea of monotheism and was surrounded by a world that had multiple gods. But when he realized that all of these gods could not end his suffering he began meditating and striving for Nirvana. that is lie and Buddha was introduced to the idea of monotheism😃😃😃💕💕💓💗👑