Dassault Falcon 6x vs Gulfstream G400

The Dassault Falcon 6X and Gulfstream G400 sit in the large-cabin, long-range business jet category, aimed at owners who want true intercontinental capability with a spacious cabin. The Falcon 6X is positioned as an ultra‑widebody large-cabin jet, emphasizing cabin cross-section and comfort, while the G400 is a newly introduced large-cabin Gulfstream that focuses on speed, efficiency, and the brand’s long-range mission profile. In range, the Falcon 6X is typically cited at about 5,500 nautical miles, enabling nonstop missions such as New York to much of Western Europe. The G400 is generally advertised around 4,200 nautical miles, better suited to transcontinental and many transatlantic city pairs, but with less margin for the longest routes. For passenger capacity, both can be configured for roughly 10 to 16 passengers depending on layout, with typical executive configurations around 12 to 14. In practice, the Falcon 6X’s wider cabin can feel more accommodating at similar seating counts, while the G400 competes on performance-oriented missions within its range envelope.