The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) is a major new geophysical research program that is under way to map the electrical resistivity structure of the continental lithosphere, by utilising deep-sounding magnetotelluric (MT) data that is being progressively acquired via an eventual continent-wide deployment of long-period (10-10 000 s) magnetotelluric instruments in a half-degree interval (~55 km) grid of stations set across all of Australia. AusLAMP aims to provide constraints on the tectonic evolution of the continent and its hidden mineral exploration potential, as part of the UNCOVER initiative. This data package contains 3D electrical resistivity models of the continental crust, derived from a PACE Copper - funded component of the AusLAMP survey dataset which was obtained in north-eastern South Australia. The subject modelled area covers the Cooper Basin and the Simpson Desert, and is an area that previously has received minimal coverage by any deep-probing geophysical techniques. The 3D modelling data inversion was performed using MT data from 123 long-period MT sites using ModEM3DMT, and the model is delivered in a variety of formats including in 3D as Gocad and Paraview formats, or alternatively, as georeferenced depth slices ready to view in ArcGIS and GoogleEarth, as well as in a variety of ASCII formats presented with and without model boundary padding.