There are currently 4 seasons of the Demon Slayer anime. The seasons cover these arcs respectively:
- Season 1: Unwavering Resolve arc (26 episodes)
- Season 2: Mugen Train arc (7 episodes) and Entertainment District arc (11 episodes), totaling 18 episodes
- Season 3: Swordsmith Village arc (11 episodes)
- Season 4: Hashira Training arc (8 episodes)
After these four seasons, the story continues with a trilogy of feature films adapting the final "Infinity Castle" arc. Thus, there are 4 seasons of the anime, with the concluding arc being told through movies rather than a fifth season.
