Has he estimated the token cost for this (if he had to pay that is)? I'm curious how much this would cost a paying customer.

Bun is owned by Anthropic.

This is just marketing budget.

The acquisition money is coming from marketing budget :D

Probably in the six figures.

Depending on the model I could easily see it approaching 7 figures since Mythos security scans have been 6 figures already and don't require nearly as much output.