It's an interesting game theory where once a better frontier model is exposed via an API, competitors can generate a few thousand samples, feed that into a N-1 model and approach the N model. So you might extrapolate that a few thousand O3 samples fed into R1 could produce a comparable R2/3 model.

It's not clear how much O1 specifically contributed to R1 but I suspect much of the SFT data used for R1 was generated via other frontier models.