Dassault Falcon 8x vs Gulfstream G400 vs Gulfstream G500

The Dassault Falcon 8X, Gulfstream G400, and Gulfstream G500 are all large-cabin business jets, but they sit in slightly different segments. The Falcon 8X is typically viewed as an ultra-long-range, large-cabin trijet, prioritizing intercontinental flexibility and strong short/steep-airport capability. The Gulfstream G400 is a long-range, large-cabin jet positioned below the G500, aimed at high-comfort missions that are still broadly transoceanic. The Gulfstream G500 is a large-cabin, long- to ultra-long-range jet that generally offers higher cruise efficiency and performance than the G400. On range, the Falcon 8X is the longest-legged of the three at about 6,450 nautical miles, the G500 follows at about 5,300 nautical miles, and the G400 is around 4,200 nautical miles. For passenger capacity, typical executive layouts for all three are commonly in the 10–16 passenger range; maximum certified seating is generally higher, with the Falcon 8X often up to about 19, and the G400/G500 configurations varying by interior but typically in the high teens.