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The synthesis of the title compound, C16H15N3O, is regiospecific and single-crystal X-ray diffraction provides the only means of unambiguous structural analysis, with the benzene ring bonded to the imine C atom. The phenyl ring and the essentially planar (r.m.s. deviation 0.0354 Å) methoxybenzene group are rotated by 29.41 (5) and 37.01 (5)°, respectively, from the central pyrazole ring. An intermolecular N—H...N hydrogen bond links symmetry-related molecules into a C(5) chain, which runs parallel to the b axis.