Is level 20 the max in 5E?

Excuse me, I've been wondering about something regarding the game mechanics of Dungeons & Dragons 5th Edition (5E). Could you clarify for me whether level 20 is indeed the maximum level that a character can achieve in this version of the game? I've heard conflicting opinions, and I'm trying to get a definitive answer to help guide my understanding of character progression and the overall game balance. Your insight would be greatly appreciated.