Data and code for "Revealing the free energy landscape of halide perovskites: Metastability and transition characters in CsPbBr3 and MAPbI3" doi-10-5281-zenodo-8309963-0 https://doi.org/10.5281/zenodo.8309963 Swedish National Data Service Svensk nationell datatjänst Landing page Data and code for "Revealing the free energy landscape of halide perovskites: Metastability and transition characters in CsPbBr3 and MAPbI3" doi-10-5281-zenodo-8309963-0 https://doi.org/10.5281/zenodo.8309963 Fransson, Erik Rahm, J. Magnus Wiktor, Julia Erhart, Paul Swedish National Data Service Svensk nationell datatjänst Landing page This record contains a neuroevolution potential (NEP) model (nep-MAPI-SCAN.txt ) for MAPbI3 used in the linked publication. The model can be used in conjunction with the GPUMD package. The calorine package provides a Python interface to GPUMD. Several primitive structures in extended xyz format can be found in the *.xyz files. These structures have been relaxed using the NEP model included here. The demo-for-using-structures-and-model.py script illustrates how to access the structures and model. Access to data through an external actor. Data are freely accessible. Åtkomst till data via extern aktör. Data är fritt tillgängliga. openAccess