Like the coupe, power comes from a 552bhp, 398lb ft version of the R8's 5.2-litre V10, making the R8 GT Spyder good for a top speed of 197mph and a 0-62mph run in 3.8 secs.
Audi has also chopped 85kg from the regular Spyder's kerb weight, largely down to extensive use of carbon fibre, including the soft-top's cover, the rear spoiler and the rear bumper. Oh, and the seats - which save a total of 32kg over the regular car's chairs.
Visual clues to the R8 GT Spyder include a twin-lipped front spoiler, carbon fibre winglets on the front bumper, dark LED taillights, a larger rear diffuser and distinctive round tailpipes.
Production will be limited to just 333 units (as with the coupe version) Sterling-shaped prices haven't been announced, but in Euro-land the R8 GT Spyder is set to cost 207,800 euros (or around £185k)