مقاتلة فاشلة والجميع يعلم ذالك وروسيا بنفسها تمتلك منها مابين 12 و 15 مقاتلة فقط بما فيها البروتوتايب 
زائد ليست جيل خامس
However, the Su-57 wasn’t designed to use these missiles. Although the Su-57 isn’t considered a true fifth-generation fighter, it still incorporates stealth technologies to reduce its radar signature. But it only works effectively if the aircraft uses weapons stored in its internal bays.
According to estimates, russia has only 12 to 15 Su-57s in total, prototypes included. The number of aircraft directly involved in combat missions is 10 at best, though more likely it's limited to 4 or 6 units.