As of the latest information available, Attack on Titan (AoT) has a total of 100 anime episodes. This count includes:

• Season 1: 25 episodes
• Season 2: 12 episodes
• Season 3 Part 1: 12 episodes
• Season 3 Part 2: 10 episodes
• Season 4 Part 1: 16 episodes
• Season 4 Part 2: 12 episodes
• Season 4 Part 3 (Final Chapters) aired as two specials, which are divided into 5 episodes (2 in the first special, 3 in the second)

Additionally, there are 8 OVAs (original video animations) associated with the series, but these are typically counted separately from the main episode count. The final season episodes were released partly as TV episodes and partly as specials which later got segmented into regular episode lengths for streaming.

Thus, the core anime series officially stands at 100 episodes including specials up to the end of 2023.