  The measurement of the $t\bar{t}$ inclusive production cross section
$\sigma_{t\bar{t}}$ is crucial to probe QCD predictions, constrain new physic
scenarios, proton PDFs, top quark pole mass, $\alpha_S$ and many other
parameters from the SM. The CMS Collaboration has measured this quantity in
different final states and at different centre-of-mass energies, probing QCD
calculations and deriving several constraints. In this document a summary of
the latest results at each channel and centre-of-mass energy is presented.
