On: CuPy: NumPy and SciPy for GPU

[kmaehashi]

An excellent example of Array API usage can be found in scikit-learn. Estimators written in NumPy are now operable on various backends courtesy of Array API compatible libraries such as CuPy and PyTorch.

https://scikit-learn.org/stable/modules/array_api.html

Disclosure: I'm a CuPy maintainer.