$t\bar{t}$+X production at ATLAS and CMS

Recent measurements of top-quark pair production in association with W-bosons, Z-bosons, photons and b-tagged jets are reported. The measurements are based on ATLAS and CMS analyses of proton-proton collisions taken at 13 TeV center-of-mass energy. Inclusive and differential cross-sections of there rare processes are compared to Standard Model theory predictions. They provide stringent tests of QCD predictions and serve as a probe for new physics beyond the Standard Model