In the mol-ecule of the title compound, C(12)H(15)N(3)O(2), the pyrazole ring is oriented at a dihedral angle of 49.64 (6)° with respect to the benzene ring. Intra-molecular O-H⋯O, N-H⋯O and C-H⋯O inter-actions result in the formation of a trifurcated hydrogen bond. In the crystal structure, inter-molecular N-H⋯O and O-H⋯N hydrogen bonds link the mol-ecules, forming a network structure.