  Recent measurements of the inclusive top pair production at the Tevatron and
LHC collider in the electron/muon final states are discussed. Measurements at
the Tevatron use up to 9.7 /fb of data, and at the LHC up to 4.9 /fb of data at
$\sqrt{s}=7$ TeV and up to 20.3 /fb of data at $\sqrt{s}=8$ TeV. For the
experiments at both colliders these corresponds to the full data sets at the
given center-of-mass energies. Overall results are in agreement between the
experiments at the Tevatron and between the experiments at the LHC. All
measurements are in agreement with recent theory calculations at NNLO QCD.
Individual LHC measurements are challenging the precision of the theory
calculations.
