The Airbus A350 is a long-range, wide-body twin-engine airliner developed and produced by Airbus. The initial A350 design proposed in 2004, in response to the Boeing 787 Dreamliner, would have been a development of the Airbus A330 with composite wings and new engines. Due to inadequate market support, Airbus switched in 2006 to a clean-sheet "XWB" (eXtra Wide Body) design, powered by two Rolls-Royce Trent XWB high bypass turbofan engines.

The A350-900 is the first A350 model; it has a MTOW of 280 tonnes (620,000 lb), typically seats 325 passengers, and has a range of 8,100 nmi (15,000 km; 9,300 mi). Airbus says that per seat, the Boeing 777-200ER should have a 16% heavier manufacturer's empty weight, a 30% higher block fuel consumption, and 25% higher cash operating costs than the A350-900. The -900 is designed to compete with the Boeing 777-200LR and 787-10, while replacing the Airbus A340-500.
(Source: Wikipedia)