The new EPOS 4 model has been recently released. In the model, the treatment of parton ladders was completely redone, in particular multiple scatterings are treated in parallel. The backward parton evolution in each of the parallel parton ladders considerably increases the precision of the generation of hard processes. Another crucial ingredient is the discovery that the parallel parton ladders involve dynamical virtuality cutoffs, referred to as saturation scales, which values rigorously guarantee factorization and binary scaling at large transverse momenta. In this seminar I will introduce the event activity estimators flattenicty and RT. They were built to study QGP-like effects in pp collisions at the LHC energies. In particular flattenicity allows for a definition of a modification factor (Qpp), which is analogous to the nuclear modification factor typically measured in heavy-ion collisions to study parton-energy loss effects. The first ALICE results including pT spectra as a function of flattenicity and RT in pp collisions at the LHC energies will be presented. Data will be discussed in the context of QCD-inspired event generators: EPOS 4 and PYTHIA 8.