I wonder: when did o1 finish training, and when did o3 finish training? There's a ~3 month delay between o1's launch (Sep 12) and o3's launch (Dec 20). But, it

I wonder: when did o1 finish training, and when did o3 finish training? There's a ~3 month delay between o1's launch (Sep 12) and o3's launch (Dec 20). But, it's unclear when o1 and o3 each finished training.