I recently interviewed for a role at OpenAI, and while the process was generally well-organized, I had a mixed experience with the hiring manager. Unfortunately, they seemed quite busy and disinterested, arriving late to their own interview, which gave a negative first impression. However, I did appreciate the transparency they offered during the conversation once it started.
On a more positive note, the recruiter was excellent. They were clear in explaining the process, supportive, and responsive throughout.