Comparison of empirical models of the magnetospheric magnetic field elaborated by Ostapenko and by Tsyganenko for the inner magnetosphere is made. Under conditions of weak disturbance, both models show good coincidence near the Earth's magnetic dipole equator plane for geocentric distances from 4 to 10 Earth radii (R_E). The Ostapenko model predicts stronger fields up to the ring current region (8 R_E), and the Tsyganenko model gives stronger fields outside this region. The models diverge in the subsolar region and near the Earth as the solar wind pressure increases.