"Work on the sixth generation is already underway. The main difference from the fifth generation will lie in the fact that the basic version of the sixth-generation fighter is expected to be unmanned. The possibility of pilot control will be optional. All the other characteristics represent a further development of the already existing ones. [The sixth-generation fighters will be] even faster, even more manoeuvrable, even more imperceptible, and so on," Khokhlov said.
Fifth-generation Su-57 fighters are currently being used in Russia. The country's Aerospace Forces will receive a first series-produced Su-57 fighter by the end of the year, as a contract for 76 Su-57 fighters was signed at the ARMY-2019 International Military and Technical Forum, which Russia hosted in late June.