A better understanding of the kinetics associated with the oxidation of CO/H 2 is required to improve the stability of syngas flames. The multiple chemical reactions present in the mechanisms required to model these flames make it difficult to process the data obtained from computed simulation and the comparison of these data with experimental values. This paper presents a model for a plug flow reactor that uses the open­source software Cantera. This model allows the use of multiple chemical reactions. The model was validated against a commercial program and was used to simulate experiments with CO/CO 2 /H 2 O mixtures. The comparison between two mechanisms of extended use in the combustion literature for CO/H 2 flames illustrated the model capabilities.