The presented model can be used to estimate the relative rate constants between a gas phase and a liquid phase or between two solvents for a temperature range of around 250 K to 400 K. If a rate constant in one solvent or in a gas phase is known for a reaction, our model outputs can be used to estimate absolute rate constants in many different solvents for a given reaction. One of the advantages of the model is that it only needs the atom-mapped reaction SMILES and solvent SMILES as inputs, which are more amenable for automatic high-throughput predictions in comparison to requiring optimized 3D geometries as input. We anticipate the model to be particularly useful for the design of chemical processes and automatic construction of reaction mechanisms where fast estimations of kinetic parameters and solvent screenings are needed for a large number of reaction-solvent pairs.