In the title compound, C20H18ClN5S, the toluene and triazole rings are oriented almost perpendicular to each other, making a dihedral angle of 89.97 (9)°, whereas the dihedral angle between cholorophenyl and pyrazole rings is 54.57 (11)°. In the crystal, pairs of N-H⋯N hydrogen bonds link the mol-ecules into inversion dimers. Weaker C-H⋯S and C-H⋯Cl inter-actions are also present.