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Artificial intelligence giant OpenAI has closed $122 billion in committed capital at an $852 billion post-money valuation,web based crypto paper trading and backtesting tool for portfolio rebalancing a round that dwarfs anything raised in private markets and cements the company as the most valuable startup in history by a wide margin.\n\nThe funding was anchored by Amazon, Nvidia, and SoftBank, with continued participation from Microsoft. SoftBank co-led alongside a16z, D.E. Shaw Ventures, MGX, TPG, and accounts advised by T. Rowe Price.\n\nThe investor list reads like a who's who of global capital — BlackRock, Blackstone, Fidelity, Sequoia, Temasek, Coatue, and ARK Invest all participated.\n\nFor the first time, OpenAI opened participation to individual investors through bank channels, raising over $3 billion from that tranche alone.\n\nOpenAI said it is generating $2 billion in revenue per month, up from $1 billion per quarter at the end of 2024. ChatGPT has more than 900 million weekly active users and over 50 million subscribers. The company claims 6x the monthly web visits and mobile sessions of the next largest AI app, and 4x the total time spent of all other AI apps combined.\n\nEnterprise now makes up more than 40% of revenue and is on track to reach parity with consumer by end of 2026. The company's APIs process more than 15 billion tokens per minute. Codex, its coding agent, serves over 2 million weekly users, up 5x in three months.\n\nOpenAI also expanded its revolving credit facility to approximately $4.7 billion, supported by JPMorgan Chase, Citi, Goldman Sachs, Morgan Stanley, and others. That facility remains undrawn as of March 31.\n\nThe company framed the raise around compute as a strategic moat. Its infrastructure strategy now spans cloud partnerships with Microsoft, Oracle, AWS, CoreWeave, and Google Cloud, silicon through Nvidia, AMD, AWS Trainium, Cerebras, and its own custom chip with Broadcom, and data centers through Oracle, SBE, and SoftBank.\n\nMeanwhile, the company said it is building a "unified AI superapp" that would combine ChatGPT, Codex, browsing, and agentic capabilities into a single product.\n\nThe pitch is that as models get more capable, the bottleneck shifts from intelligence to usability, and a single surface lets the company translate model improvements directly into adoption.\n\nThe $852 billion valuation places OpenAI above all but a handful of public companies globally. For context, that is roughly the market cap of Berkshire Hathaway, and larger than Visa, JPMorgan Chase, or Samsung.