Measured Curie temperatures for 39 magnets (16 rare-earth-free, 7 rare-earth, 16 gadolinium) and 4 controls with no Curie temperature, next to three predictions: Prophet mean field, Prophet Monte Carlo, and the CHGNet + CatBoost route. chgnet_held_out_k is the same CHGNet model retrained without that compound's formula. Each row links its verified CIF and both route runs.