Abstract The Southern African Magnetotelluric Experiment (SAMTEX) involved the collection of data at over 700 sites in Archean to Proterozoic southern Africa, spanning features including Kalahari Craton, Bushveld Complex, and voluminous kimberlites. Here, we present first 3D inversions full SAMTEX set. In this paper, focus on assessing robustness models by comparing two different inversion code...