We introduce an automated tool to simulate kinetic models for radiation-defined redox chemistries in liquid environments, allowing for a facile simulation of complex models. This is demonstrated for the reduction of aqueous HAuCl4 solutions, showing good agreement with experimental findings using LP-TEM, in situ XRD, and literature data. Our findings emphasize that accurate and holistic modeling of beam effects is not only necessary but allows for drawing meaningful conclusions for unbiased (i.e., not irradiated) systems, even when operating at high dose rates.