This paper presents a compilation and discussion of the results supplied by HySafe partnersparticipating in the Standard Benchmark Exercise Problem (SBEP) V1, which is based on anexperiment on hydrogen release, mixing and distribution inside a vessel. Each partner has his ownpoint of view of the problem and uses a different approach to the solution. The main characteristics ofthe models employed for the calculations are compared. The comparison between results, togetherwith the experimental data when available, is made. Relative deviations of each model from theexperimental values are also included. Explanations and interpretations of the results are presented,together with some useful conclusions for future work.