Here's OpenAI's data on it: https://www.nber.org/system/files/working_papers/w34255/w34255.pdf https://www.nber.org/system/files/working_papers/w34255/w342...

Here's OpenAI's data on it: https://www.nber.org/system/files/working_papers/w34255/w34255.pdf https://www.nber.org/system/files/working_papers/w34255/w342... I don't think marketing emails are written enough to constitute the "bulk" of it, but writing in general seems to be