When the oxygen chemical potential drops below -4.7 eV, the surface is further reduced to TiO1.94, adopting a (1×2) symmetry with a doubled periodicity along the [11 ̅ 0 direction, a structure that has been extensively reported . This surface features a distinctive Ti2O3-(1×2) row motif. In experiments, both symmetric and asymmetric reconstructions of this motif have been observed at 800°C, with asymmetric reconstructions being more prevalent in in-situ STEM studies . Specifically, the symmetric reconstruction has both titanium atoms four-fold coordinated, while the asymmetric structure contains Ti 4f and Ti 6f atoms. Interestingly, our MACE model accurately captures the small energy differences between these two reconstructions, with an 8 meV/Å 2 variance compared to the DFT energy difference of 7 meV/Å 2 .