In the title molecule, C24H15BrCl2N2O, the dihedral angles betwen the pyrazole ring and its N-bonded phenyl (A) and C-bonded bromobenzene (B) rings are 10.34 (16) and 40.95 (15)°, respectively. The dihedral angle between rings A and B is 56.89 (17)°. The title molecule exists in a trans conformation with respect to the acyclic C=C bond. In the crystal, molecules are linked into inversion dimers by pairs of C—HO hydrogen bonds, generating R 2 2(14) loops. The crystal structure is further consolidated by C—Hπ interactions.