The T-34-57 (1943) (nickname: exterminator) is a fourth and late experimental variant of the T-34 medium tank family. Despite the fact that production of the T-34-57 early experimental variant was cancelled in September after only ten units had been produced, the Red Army was still highly interested in mounting a 57 mm (2.25 in) gun on T-34 tanks. The project was restarted in 1943. The Zavod imeni Stalina (ZiS) 4M (improved ZIS-4 tank gun) tank gun was placed in a T-34 (1943) variant tank with a hexagonal turret this time. This tank was dispatched to the front with the "Special Tank Company 100" on August 15, 1943, but it never saw combat. Following this, the 57 mm (2.25 in) gun design was abandoned because the new 85 mm D-5 (3.35 in) tank gun was already in production, resulting in the T-34-85 (D-5T) variant.

Introduced in the Closed Beta Test for Ground Forces before Update 1.41, the premium T-34-57 (1943) late experimental variant performs similarly to the T-34-57 early experimental variant, with the exception of a newer 57 mm ZiS-4M tank gun. It also has access to late-war armour-piercing composite rigid (APCR) ammo, which allows it to fight more strongly armoured adversaries. Players may have to fire numerous rounds to defeat an enemy tank due to the smaller calibre of the 57 mm ZiS-4M tank gun. The T-34-57 (1943) late experimental variant resembles the T-34 (1942) variant in appearance, as both have the same hexagonal turret. This type of turret configuration improves crew ergonomics, however, it is not well reflected in the game. Players who have previously experienced the T-34-57 early experimental variant should have little trouble adjusting to this tank.