Someone has already managed to reach the maximum level in Diablo 4 which is level 100.
The game will only be officially released this Tuesday, but has been playable since last Friday for people who bought a special edition. Since then, streamer Rob2628 has managed to reach the maximum level 100. Soon after, other gamers also joined him.
Blizzard previously indicated that it would take around 150 hours to reach this maximum level.
Blizzard is also holding a competition for people who reach level 100 on the Hardcore mode. If your character dies in this difficult mode, he will also remain dead and you will have to start all over again. The first thousand players to achieve this will have their name engraved on a statue in the game. As far as we know, no one has succeeded yet.