In the title mol­ecule, C25H23N3O2, the pyrazole ring forms dihedral angles of 28.56 (7), 80.35 (7) and 31.99 (7)° with the phenyl ring, the p-tolyl ring and the p-tolyl­amino ring, respectively. The N—H group attached to the exocyclic C=C bond is in a syn arrangement with respect to the C=O bond of the pyrazolone group and an intra­molecular N—H⋯O hydrogen bond is observed. In the crystal, weak C—H⋯π inter­actions link mol­ecules along [100].