151 TL;DR: OpenAI has confidentially filed for a US IPO, setting up a major Wall Street test of whether massive ChatGPT usage and AI revenue growth can justify frontier AI valuations, despite high compute costs, regulatory scrutiny and fierce competition. Article: OpenAI has confidentially filed paperwork for a US initial public offering, taking its first formal step toward a Wall Street debut that could become one of the most closely watched AI IPOs ever. The ChatGPT maker has not set a listing date, but the filing matters because public markets may soon get a clearer look at the economics behind frontier AI. OpenAI said it has “not decided on timing yet” and added that it “may be a while” before any IPO, because some work may be easier as a private company. The move comes as artificial intelligence companies race to fund expensive model development, cloud infrastructure and enterprise expansion. Reuters reported that OpenAI’s revenue has reached about $2 billion monthly, while ChatGPT has more than 900 million weekly users. A listing would test whether investors believe OpenAI can convert massive AI usage into durable profits. It would also force deeper disclosure of revenue, costs, risks and governance, especially after OpenAI’s shift from nonprofit roots toward a public benefit corporation structure. Market attention is sharper because rival Anthropic has also moved toward an IPO. That could turn 2026 into a direct public-market referendum on generative AI valuations, not just AI hype. For OpenAI, the IPO path offers capital and employee liquidity. For investors, it offers access to a defining AI company, but also exposure to heavy compute costs, regulatory scrutiny and fast-moving competition from Google, Anthropic and other AI labs. You Might Be Interested In Google adds Gemini guidance to demand Gen ads Paid Social Media: The New Frontier for Publishers HubSpot buys Warmly to sharpen AI sales agents Google embeds Gemini-AI into Play Store with “Users are saying” review summaries TikTok and YouTube Move Beyond Creator Funds Toward Long-Term Solutions E-commerce advertising becomes India’s third-largest digital channel