One of the things that the Pycket team has been trying to do is use JIT compilation to cut down on the runtime cost of Racket's contract system. This is not an

One of the things that the Pycket team has been trying to do is use JIT compilation to cut down on the runtime cost of Racket's contract system. This is not an area chez scheme would be able to compete with. I don't really know what is the current state of pycket other than that though.