This project aims at developing accurate, real-time, patient-specific biomechanical liver and kidney models. These deformable models will be based on an optimal choice of material constitutive laws, patient-specific surface and volumetric meshes, and advanced computational strategies. The result of this work will be integrated as a plugin in the SOFA framework and as such will be available for various projects developed at IHU-Strasbourg aiming at training, patient-specific planning, or augmented reality, in the fields of interventional radiology and laparoscopic surgery. The models will be initially developed for the porcine liver and kidney, leveraging our previous work from the PASSPORT project. Once validated against in vivo porcine data, knowledge and methodology will be adapted to match patient-specific geometrical and biomechanical data for humans.