In the crystal structure of the title compound, C22H18N4O, the quinoxaline system makes dihedral angles of 86.59 (7) and 63.37 (9)° with the benzohydrazide and phenyl rings, respectively. The benzohydrazide ring makes a dihedral angle of 72.46 (10)° with the phenyl ring. The crystal structure is stabilized by intermolecular N—H⋯O hydrogen bonds, C—H⋯O contacts and C—H⋯π interactions