When asking about the most sophisticated jet, it can be taken in one of two ways. First, sophistication can be described as luxurious when describing the inside of an aircraft. The second way to describe the sophistication of a jet may explain the actual jet and what it can do. First, the Gulfstream G500 is probably the most luxurious in the world because it has nice seating and high speed internet that is very fast.
The most sophisticated jet is a fighter jet called the F-22 Raptor. It was made by Lockheed Martin and is very advanced compared to the other aircraft jets. The Air Force owned the F-22 Raptor in the mid 2000s. It can easily move around and has a twin-engine.