软银完成对OpenAI的400亿美元投资，最后一笔资金于上周到账

Group 1 - SoftBank Group has completed its $40 billion investment commitment in AI startup OpenAI, with the final tranche amounting to approximately $22 billion to $22.5 billion [1][2] - The total investment corresponds to a pre-money valuation of about $260 billion for OpenAI, with the funding originally planned to be disbursed over 12 to 24 months [2] - The investment was accelerated due to OpenAI's increasing demand for capital in areas such as computing power, model training, and product expansion [2][3] Group 2 - The funding will primarily support OpenAI's procurement of computing resources, foundational model development, and expansion of products and infrastructure [3] - OpenAI maintains a long-term partnership with Microsoft, which provides cloud computing infrastructure and collaborates on product and technology [3] - SoftBank has identified artificial intelligence as a key investment focus, with this investment being its largest single capital allocation in the AI sector [3]