The PC file size for Borderlands 4 is confirmed to be around 65 GB. Although the storage requirement in the official minimum and recommended specs mentions 100 GB of available space, the actual game installation size is about 65 GB on PC. By comparison, the PlayStation 5 version is about 28 GB, and the Xbox version is around 29.5 GB, so the PC version is significantly larger due to higher graphical fidelity and features.
