OpenAI notoriously does not negotiate. You can certainly try but I would guess you get nothing out of it. Levels posted a big blog about their compensation structure and how they don't negotiate. https://www.levels.fyi/blog/openai-compensation.html You're likely to get an absurdly high base salary with a healthy sprinkle of their PPUs and, based on what they've been offering Google researchers, I'd take it immediately lol