Comparing: IS-6 vs. AMX 50 100

Plans for this vehicle were drawn up in the construction bureau of the Chelyabinsk Kirov plant from December 1943 to the summer of 1944. Further development and the construction of the first prototype took place at the Uralmash plant. However, the vehicle had no advantages over the other heavy tank designs under consideration, and its armor was seen as inferior to the IS-4 (Object 701), so the IS-6 was not selected for production.

Development of this heavy tank started in 1945, and was influenced by German wartime tank designs. In 1950 a prototype with an oscillating turret and the 100 mm gun was manufactured. The vehicle never entered mass production nor saw service.