We reparameterized GFN1-xTB to obtain a new tight-binding semiempirical reparameterization denoted as AMC-xTB. Figure shows the error in electronic binding energies before For all the data sets shown in Figure the reparameterization results in near-zero means of the energy errors. This is a reduction from error means of 3.7-11.8 kcal/mol for GFN1-xTB.