Ask HN: OpenAI IPO?

I wonder if OpenAI has gone public. Are all these investments closed investments? Thrive Capital, Microsoft, Khosla Ventures, Nvidia, SoftBank, Fidelity Management and Research Company, Altimeter Capital, MGX. I know these are closed investments. But if OpenAI is listed on the stock exchange, I might want to consider it.

What do you guys think?