The Su-75, also known as Checkmate, is a cutting-edge fifth-generation lightweight fighter aircraft developed by Russia's United Aircraft Corporation (UAC). The Su-75 represents a significant milestone in Russian aviation technology, boasting advanced stealth capabilities, superior maneuverability, and a wide range of versatile weaponry. With its sleek design and advanced avionics, the Su-75 is capable of both air-to-air and air-to-ground missions, making it a highly adaptable and formidable asset in modern warfare. Furthermore, the aircraft's advanced sensor suite and advanced artificial intelligence integration provide enhanced situational awareness and decision-making capabilities for the pilot. The Su-75 Checkmate promises to revolutionize aerial combat with its cutting-edge technology and is set to become a significant player on the global stage.

The Su-75 was planned to have its first flight in 2023 but this has been delayed, presumably due to the war in Ukraine. The project's future prospect is now somewhat unclear.

'Entered service' is defined according to the Su-75's Wikipedia page.