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The fused pyrazole and pyrimidine rings in the title compound, C 22 H 19 BrN 4 O, are almost coplanar, their planes being inclined to one another by 2.08 (13)°. The dihedral angles formed by the mean plane of the fused ring system and the phenyl and benzene rings are 16.21 (4) and 82.84 (4)°, respectively. An intra­molecular N—H⋯N hydrogen bond is observed. In the crystal, mol­ecules form inversion dimers  via  pairs of C—H⋯O hydrogen bonds. π–π inter­actions, with centroid–centroid distances of 3.4916 (9) Å, connect the dimers into a three-dimensional network.

N-(2-Bromo-4-methylphenyl)-2-(5-methyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-yl)acetamide