I made a notebook where I worked through all the examples in Stepen Wolfram’s announcement of the release of 13.2 on his blog and for some of the examples there was a comparison with 13.1.
I have a installation of 13.1 so I was able to perform the computations.
I am wondering if there is a simple way to evaluate a computation in a past version of Mathematica like ExternalEvaluate[code,"Mathematica 13.1 "] and ExternalEvaluate[code,"Mathematica 13.2 "].
wolframscript has a command-line argument -l:
-l, -local [KERNELPATH]
Execute code locally using the specified path to
the Wolfram Engine kernel. By default, KernelPath
uses the most recent version of the Wolfram
Language found on the local system.
So you can use Run or RunProcess and cobble together your own performance-comparison framework. ExternalEvaluate doesn’t seem to support Wolfram as the target system, according to the documentation.