You want to witness the learning firsthand, I suppose. That's reasonable. I'd also suggest that it's possible to imagine questions for the LLM that it cannot so

You want to witness the learning firsthand, I suppose. That's reasonable. I'd also suggest that it's possible to imagine questions for the LLM that it cannot solve today and that you reasonably believe will not be available to OpenAI to "hand tune" it against. If you can come up with such a problem, it can't solve it today, but does in the future then you have some evidence, I'd think. What's more, is we can do that today. Just think of any problem which you suspect won't be included in OpenAI's hand-tunings and check both 3.5 and 4.