Or literally ask ChatGPT if Jupiter can fit in the space between Earth and the Moon.

(it fails.)

If you ask it properly it gets it right.

From a pure measurement standpoint, could Jupiter fit in the space between the earth and moon?

The average distance from the Earth to the Moon is about 238,855 miles (384,400 kilometers). Jupiter, the largest planet in our solar system, has a diameter of about 86,881 miles (139,822 kilometers).

So, if you were to somehow place Jupiter in between the Earth and the Moon, it would fit with a significant amount of room to spare. However, it's important to note that this is a purely theoretical situation and not something that could actually happen without cataclysmic consequences due to gravitational forces and other factors.