cc-by-4.0Riley, ThomasChoudhury, DevarshiSalmi, TuomoVinciguerra, SerenaKini, YvesDorsman, BasWatts, AnnaHuppenkothen, DanielaGuillot, SebastienHoogkamer, MariskaMauviard, LucienGonzález-Caniulef, DenisStammler, PierreKazantsev, Christine2025-03-242024-12-192024-12-19https://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/11074This release upgrades X-PSI to be Cython3 compatible and provides many new features and examples, such as UltraNest sampling, Simulation-Based Inference, and reading data and instrument files that are in FITS format. A few deprecated features were also removed. See further details reported in https://xpsi-group.github.io/xpsi/history.html.Opensoftware