Photo Credit: Netflix
Viewers are wondering how many episodes are in Leviathan Season 1 and when each new episode comes out. This upcoming animated series presents an epic tale of two young teenagers and their efforts to rewrite history.

So, here’s everything you need to know about Leviathan’s episode count and its release details.

How many episodes are in Leviathan Season 1?

Leviathan Season 1 will have 12 episodes.

Leviathan is an upcoming anime series based on Scott Westerfeld’s acclaimed 2009 novel of the same name. Set in a steampunk-inspired reimagined version of the year 1914, the story follows a fugitive prince and a young girl disguised as a boy, who boards the majestic airship HMS Leviathan. Soon, the pair embarks on a daring adventure to prevent the impending world war.

The voice cast of Leviathan includes Ayumu Murase as Prince Aleksandar “Alek” and Natsumi Fujiwara as Deryn Sharp in the lead roles. Other cast members are Shunsuke Sakuya as Count Volger, Yasuhiro Mamiya as Klopp, and Mie Sonozaki as Dr. Nora Barlow, among others.

When do new Leviathan episodes come out?

All episodes of Leviathan Season 1 will become available for streaming on July 10, 2025.

The series is an original net animation (ONA) directed by Christophe Ferreira. It is produced by Qubic Pictures, in collaboration with the Japanese animation studio Orange.

How to watch Leviathan Season 1’s new episodes

You can watch Leviathan Season 1 via Netflix.

Other popular anime series fans can binge on Netflix include Cyberpunk: Edgerunners, JoJo’s Bizarre Adventure, Komi Can’t Communicate, and many more. To begin streaming, fans will need to purchase a subscription plan as Netflix does not offer a free trial.

The official synopsis for the series reads:

“Set in an alternate steampunk past, an Austrian fugitive prince and a Scottish airman in disguise embark on an unexpected quest to prevent a world war.”