When GPT gives an answer like that, is it actually a meaningful description of its capabilities? Does it have that kind of self-awareness? Or is it just a plausible answer based on the training corpus?
My guess is that the training data includes things specifically about the GPT itself and its capabilities, so it would be somewhat correct. But it's also known to just make shit up when it feels like it, so you can't 100% trust it, same as with all other prompts/responses.