How does the current model of the atom differ from j.j. Thompson's model?

J.J. Thomson's model of the atom, known as the "plum pudding model," depicted the atom as a diffuse cloud of positive charge with negatively charged electrons embedded within it, resembling a pudding with plums. In contrast, the current model, based on quantum mechanics, describes the atom as having a dense nucleus containing protons and neutrons, surrounded by electrons in probabilistic orbitals rather than fixed paths. This modern model emphasizes the wave-particle duality of electrons and incorporates principles of quantum theory, fundamentally altering our understanding of atomic structure.