  This paper presents a brief review of the interpretation of measurements of
hadron yields in hadronic interactions within the framework of thermal models,
over a broad energy range (from SIS to LHC energies, $\sqrt{s_{NN}} \simeq$ 2.5
GeV -- 5 TeV). Recent experimental results and theoretical developments are
reported, with an emphasis on topics discussed during the Quark Matter 2014
conference.
