4.2 Multi-step retrosynthesis is less dependent on single-step expansion models than policy Impact of single-step speed in multi-step In this research we also investigated the relation between single-step speed and multi-step speed, however this relation was less predictive than initially expected. We mostly find that multi-step search times is associated more with higher number of model calls, which in turn is impacted by higher average policy probabilities. This average policy probability is a reflection of model confidence, thereby influencing the exploration/exploitation trade-off in the Monte-Carlo search as that depends on the prediction probability. This is further supported by the lower number of model calls made by the original models. Future research into increasing multi-step speed, might prefer to look into optimizing the exploration/exploitation axis of the multi-step research.