nessai performs nested sampling for Bayesian Inference and incorporates normalizing flows. It is designed for applications where the Bayesian likelihood is computationally expensive. nessai uses PyTorch and also supports the use of bilby (ascl:1901.011).
https://ui.adsabs.harvard.edu/abs/2021PhRvD.103j3006W , https://ui.adsabs.harvard.edu/abs/2023MLS%26T...4c5011W , https://doi.org/10.5281/zenodo.4550693