I applied online. I interviewed at OpenAI (San Francisco, CA) in May 2021
Interview
One phone call with recruiter then a coding interview using CoderPad. Coding interview was fairly pedestrian but we did not get time to move into the areas which I think they really wanted to test.
The job role mentioned Go as the first language in the description along with Python. Turns out python is really their only language so I stopped the process at that point. For production environments strongly typed languages are a must to maintain sanity.