OpenAI, the maker of ChatGPT valued at $852 billion in its most recent funding round, is preparing to file confidential IPO paperwork with regulators within days, with a potential public listing targeted as early as September, according to the Wall Street Journal. The company is working with Goldman Sachs and Morgan Stanley on a draft prospectus, though it faces significant hurdles including intense competition from rivals Google and Anthropic, and investor scrutiny over whether its revenues can offset vast data-centre costs. The move comes amid a broader wave of high-profile listings expected in 2026, with Elon Musk's SpaceX also anticipated to file IPO paperwork this week, and AI firm Anthropic similarly eyeing a public offering.