Well, as long as by "AI" you are referring to pre-trained transformers, then what you are effectively asking for is the data used to pre-train them.

OTOH why you want the data is not clear. You don't need it to run Meta'a models for free, or to fine-tune them for your own needs. The only thing the data would allow you is to pre-train from scratch, in other words to obtain the exact same set of weights that Meta is giving you for free.