Thanks for the issue and your help proposal, This was something I was wondering about whether we want to do it.

Can you say a few words about your use case out of interest, e.g. which kind of projects are you looking to test for, what kind of OS you are targeting, etc ...

I think Numpy already has a Python 3.13 wheel, so we would first need Scipy to have a scipy 3.13 wheel. Last time I checked they don't have a one, see https://anaconda.org/scientific-python-nightly-wheels/scipy/files. Maybe look in Scipy issue tracker if they have already an issue about this? Note that cp313-cp313t are actually Python 3.13 free-threaded wheels, if you want standard Python you want cp313-cp313.

Side-comment we should have soonish (~one hour) Python 3.13 free-threaded wheel, if https://github.com/scikit-learn/scikit-learn/actions/runs/9575818682 is successful 🤞 since I merged #29247.

If you are really feeling adventurous and want to test Python 3.13 as fast as possible you can already set-up your testing using Python 3.13 free-threaded and set PYTHON_GIL=1. Note that you may bump into weird unexpected issues that are only present in Python 3.13 free-threaded and not Python 3.13 vanilla Python.

gh-21000 added 3.13 wheels builds; new nightlies are building now and should upload to https://anaconda.org/scientific-python-nightly-wheels/scipy/ in the next 30 minutes or so.