pgadosey:

How do i get the FLOPS for a sparse model or is there a reason why the value remains the same?


Well, if you count the sizes of the parameters and inputs, the zeros count just as well  as any other numbers.
Actually, to convert the sparsity into a reduced flop-count, you would either have to identify weight parts to eliminate (e.g. channels which are all zero) or move to a sparse representation of the parameters and inputs.