The Boeing 777X is an American long-range, wide-body, twin-engine airliner built by Boeing Commercial Airplanes, undergoing flight testing as of 2026. A substantial development from the original Boeing 777, changes for the 777X include General Electric GE9X engines, composite wings with folding wingtips, greater cabin width and seating capacity, and technologies from the Boeing 787 Dreamliner. The 777X program was launched in November 2013 to develop two variants: the 777-8 and the 777-9. The 777-8 provides seating for 350 to 425 passengers and has a range of 9,500 nautical miles [nmi], while the 777-9 has seating for 375 to 450 passengers and a range of 8,000 nmi.