Alphazero hasn’t existed for years. Deepmind stopped development on it and stopped releasing games played by it.
Also, Alphazero beat stockfish 8 back in 2017 and a lot has changed since (for example, the introduction of NNUE). Stockfish 8 had an elo of 3378, so alphazero’s win would put it somewhere above that number, not 3620, which is SF 15’s estimated elo.
I recently came across an article showing that a chess bot created and ran by the google deep mind easily beat Stockfish, called AlphaZero, As the other forums recently have said Stockfish is about 3620 ELO, What would that make AlphaZero, It said that AlphaZero has a unigue sense of board position, allowing it to sacrifice pieces to gain an advantage, which no other bots have. Is AlpahZero in the 4,000's?