A QM+LEC method using a different solvation approach, EC-RISM, only achieved an RMSE of 1.70 pK a units for the submitted model (nb001), but a post-submission optimization of the conformer generation workflow and the electrostatic interactions improved the RMSE to 1.13, which is more in line with the other well-performing QM+LEC methods . The CPCM implicit solvation model was used by one group and performed only slightly worse than COSMO-RS (RMSEs from the paper do not agree with official numbers. Only officially submitted ones are discussed here). For these two models, differing only by training either a single LEC for all compounds (35bdm) or two separate LECs for deprotonations of neutral compounds to anions and deprotonations of cations to neutral compounds (p0jba), the RMSEs were 1.72 and 1.31 pK a units, respectively. These results