I noticed it does get a "theory of mind" question that it used to fail, so it has indeed improved:
> “Meltem and Can are in the park. Can wanted to buy ice cream from the ice cream van but he hasn’t got any money. The ice cream man tells her that he will be there all afternoon. Can goes off home to get money for ice cream. After that, ice cream man tells Meltem that he changed his mind and he is going to drive to the school yard and sell ice cream there. Ice cream man sees Can on the road of the school and he also tells him that he is going to the school yard and will sell ice cream there. Meltem goes to Can’s house but Can is not there. His mom tells her that he has gone to buy ice cream. Where does Meltem think Can has gone, to the school or to the park?"
> “Meltem and Can are in the park. Can wanted to buy ice cream from the ice cream van but he hasn’t got any money. The ice cream man tells her that he will be there all afternoon. Can goes off home to get money for ice cream. After that, ice cream man tells Meltem that he changed his mind and he is going to drive to the school yard and sell ice cream there. Ice cream man sees Can on the road of the school and he also tells him that he is going to the school yard and will sell ice cream there. Meltem goes to Can’s house but Can is not there. His mom tells her that he has gone to buy ice cream. Where does Meltem think Can has gone, to the school or to the park?"
This is from some research in the 80s