OpenAI giving him a fancy schmancy title to advocate for their product, such as in the way he is inadvertantly doing here.
He doesn’t seem the kind who would sell his credibility for a few bucks.
OpenAI hiring him as a consultant, obviously, which may well be the case.
It's not so obvious. Taking my parent comment literally (as he said "the other way around"), one can assume that ChatGPT the platform itself would pay Terrence, rather than OpenAI.