F-35 and F-22 Raptors are currently the only fighter jets that are stealthy enough to be classified as true fifth-generation fighters. Indian Air Force would not have rejected Su-57 and pursued the AMCA project if Su-57 were genuinely a fifth-generation aircraft. Although China makes bold claims about the capabilities of its fighter jets, these claims are not taken seriously by the Indian Air Force, Taiwanese Air Force, Philippine Air Force, or Japanese Air Force. As for the KAAN fighter jet, we will only be able to assess its significance once it enters service.
Indian Air Force can only purchase fighter jets that are available for sale, like Tejas and Rafale and Only those jets that are available for sale matter—not those that are still under development.
Indian Fanboy post of wishful thinking above.
Reality below
China's J-20 Fighter Makes U.S. Air Force Generals Freak Out
China's Chengdu J-20 "Mighty Dragon" is a fifth-generation stealth fighter, challenging U.S. air superiority. While the J-20 is faster than the F-35 Lightning II, it has a larger radar cross-section and engine issues, particularly with the WS-15.
nationalinterest.org