  In this paper, we discuss inflationary scenario via scalar field and fluid
cosmology for anisotropic homogeneous universe model in $f(R)$ gravity. We
consider an equation of state which corresponds to quasi-de Sitter expansion
and investigate the effect of anisotropy parameter for different values of
deviation parameter. We evaluate potential models like linear, quadratic and
quartic which correspond to chaotic inflation. We construct the observational
parameters for power-law model of $f(R)$ gravity and construct the graphical
analysis of tensor-scalar ratio and spectral index which indicates consistency
of these parameters with Planck 2015 data.
