  We study four-point functions in Chern-Simons vector models in the large $N$
limit. We compute the four-point function of the scalar primary to all orders
in the `t Hooft coupling $\lambda=N/k$ in $U(N)_k$ Chern-Simons theory coupled
to a fundamental fermion, in both the critical and non-critical theory, for a
particular case of the external momenta. These theories cover the entire
3-parameter "quasi-boson" and 2-parameter "quasi-fermion" families of
3-dimensional quantum field theories with a slightly-broken higher spin
symmetry. Our results are consistent with the celebrated bosonization duality,
as we explicitly verify by calculating four-point functions in the free
critical and non-critical bosonic theories.
