Adding chemical diversity to the dataset offers minimal improvement in predicting experimental small molecule stabilities (Fig. ), which remain slightly below 80%. Despite using a larger reaction template corpus-including all alkane degradation templates from Section 2.3 and morethis model generally underperforms compared to previous models in predicting small molecule stabilities. This underperformance is likely due to compounding errors from multiple literature sources, which are not present in the systematic data sources of Section 2.3. These systematic sources use a consistent DFT-level theory, making relative comparisons less error-prone. This again highlights that self-consistency in the generation and curation of kinetic data can be a limiting factor compared with mechanistic diversity or quantity.