Wavefunction, Inc. provides cutting edge molecular modeling solutions. Spartan provides an elegant user interface, and is widely distributed and cited in both research and education. Odyssey enables a molecular window onto fundamental chemistry concepts utilizing a dynamics engine for on-the-fly-simulations. The new Spartan'26 release delivers high accuracy QM and ML models. Spartan'26 provides flexible natural product 13C NMR shift results at ~2.0 ppm level accuracy from Neural Network models in seconds to just a few minutes per molecule.