Gulfstream G600 for sale / Range: 6,600 nm / Passengers: Up to 19.
This is probably the closest direct comparison. The G600 has the same published maximum range and a similar large-cabin mission, while its cabin is longer at 53 ft 7 in of total interior length. It also uses Gulfstream's Symmetry Flight Deck and Pratt & Whitney PW815GA engines.
The choice comes down to cabin layout, avionics, payload and the individual aircraft. The Global 6500 has a wider cabin in published comparisons, while the G600 gives you more cabin length.
Dassault Falcon 8X for sale / Range: 6,450 nm / Passengers: 12 to 16.
The Falcon 8X comes close on range but uses three Pratt & Whitney Canada PW307D engines. Dassault also designed it with strong short-field capability. Its published takeoff distance is 5,880 ft.
For an owner who values runway flexibility and lower published operating costs, the 8X deserves a serious look. The Global 6500 has a little more published range and a wider cabin.
Gulfstream G500 for sale / Range: 5,300 nm / Passengers: Up to 19.
The G500 is the shorter-range option here. Its published range is 5,300 nm, with a high-speed cruise range of 4,500 nm at Mach 0.90.
That makes it a better fit when the mission rarely pushes beyond 5,000 nm. If the routes regularly become intercontinental, the Global 6500 gives the buyer another 1,300 nm of published range.
Gulfstream G700 for sale / Range: 7,750 nm / Passengers: Up to 19.
The G700 moves into a larger class. Its cabin is 63 ft 8 in long in total interior length and 8 ft 2 in wide, with up to five living areas. Published range is 7,750 nm at Mach 0.85 with eight passengers, four crew and NBAA IFR reserves.
If the mission really needs the extra range and cabin volume, the G700 wins the argument. If most trips fall inside the Global 6500 envelope, buying the larger aircraft may add capability you rarely use.
Dassault Falcon 10X for sale / Range: 7,500 nm / Passengers: Up to 19.
The Falcon 10X is a newer-generation aircraft with a much larger cabin. Dassault lists a 7,500 nm range, Mach 0.925 maximum operating speed and a cabin 9 ft 1 in wide and 6 ft 8 in high.
It is an important future comparison, but it is not the same acquisition proposition as a Global 6500 today. Dassault began its two-year certification programme after the 10X first flight in June 2026.