For General Knowledge:
The NASA X-43 was an experimental unmanned hypersonic aircraft developed by NASA as part of its Hyper-X program. It is the fastest aircraft on record with a top speed of an incredible Mach 9.6 (7,310 MPH). The SR-71 Blackbird was developed as a Black Project in the Lockheed Skunk Works in the 1960s.
Mig-31BM - 3400
Su-57 - 2600
F-15 - 2655 км/ч
F-15Cs with PW-220 engines, - M2.4,
15Cs are PW-100 engined; without V-Max switch, its top speed is M2.25
MiG-29, which can fly at M2.32 @ 14km alt, (2464km/h or 1531mph)
F-15E’s top speed at 1875 mph.
MiG 21 top speed is 2229km/h and J 20 2100km/h or Mach 2+