The Attack on Titan The Final Season anime premiered on NHK in December 2020 and aired for 16 episodes.
Attack on Titan The Final Season Part 2 premiered with episode 76 on the NHK General channel in January 2022, and aired for 12 episodes.
(The Japanese title for Attack on Titan The Final Season Part 3 is Shingeki no Kyojin The Final Season Kanketsu-hen Zenpen, which indicates it as the first half, and the Japanese title for Part 4 is Shingeki no Kyojin The Final Season Kanketsu-hen Kōhen, which indicates it as the second half.)
The official Twitter account for the Attack on Titan anime revealed on Friday that the Attack on Titan Final Season THE FINAL CHAPTERS (Shingeki no Kyojin The Final Season Kanketsu-hen) Part 2 anime will be 85 minutes long.