It's unclear if Terence is referring to "GPT-o1... a prototype version of the model that I was granted access to" as in "he was given access to GPT-o1 by the research team" or as in "he is using o1-preview". The differences in scale and quality between his shared output and the answer I get trying the same prompt from o1-preview suggest perhaps the former (otherwise luck). I haven't actually seen any examples of how long o1 "full" will think about this kind of question, though I expect it's somewhere in the same ballpark given the thought expansion still only has one real concept in it.