From MSNBC: "Measurements put the flight's official altitude, announced at a news conference after the flight, at 367,442 feet, or 112 kilometers, easily topping the required altitude of 100 kilometers (62.5 miles or 328,000 feet).... In addition to winning the X Prize, Binnie's flight smashed the altitude record for an airplane, set by X-15 pilot Joseph Walker in 1963. That altitude was 354,200 feet (67 miles or 107.9 kilometers)."
Read the whole thing for a comprehensive look at the prize, and the 'plane.