My apologies if this is too naive a question. I don't know much about AI and am just curious.
From what I read, alphazeroAlphaZero/muzeroMuZero outperform any human chess player after a few hours of training. I have no idea how many chess games a very talented human chess player on average has played before he/she reaches the grandmaster level, but I would imagine it is a number that can roughly be estimated. Of course, playing entire games is not the only training for human chess players.
Nonetheless, how does this compare to AI? How many games do AI engines play before reaching the grandmaster level? Do (gifted) humans or AI learn chess faster?