LinkedIn says President, Chairman, & Co-Founder. Murati was the CTO. But from his interviews, he sounded more like the CTO.

And often like an individual contributor: "the feeling when you finally localize a bug to a small section of code, and know it's only a matter of time till you've squashed it"

https://twitter.com/gdb/status/1725373059740082475

"Greg Brockman, co-founder and president of OpenAI, works 60 to 100 hours per week, and spends around 80% of the time coding. Former colleagues have described him as the hardest-working person at OpenAI."

https://time.com/collection/time100-ai/6309033/greg-brockman...