The series "Inside USA," a spin-off of the original "Inside" reality competition series by the Sidemen, officially premiered on Netflix on September 21, 2025. The filming dates for "Inside USA" are not explicitly detailed, but based on information that Season 3 or the USA edition was likely filmed around March 2025, it can be inferred that the filming took place several months before the release. It is also noted that the show was confirmed and hyped by the Sidemen in late August 2025, with the debut shortly after in September 2025. Additionally, there is some discussion that parts of the show may have been filmed in the UK using the same space as previous seasons, despite being named "Inside USA".
So, "Inside USA" was filmed likely in early 2025, around March, and premiered on September 21, 2025, on Netflix.
