微软美股盘前涨近5%，OpenAI签约购买额外2500亿美元的Azure服务

Core Insights - Microsoft shares rose nearly 5% in pre-market trading following the announcement of a new agreement with OpenAI [1] - OpenAI has signed a contract to purchase an additional $250 billion worth of Azure services from Microsoft [1] - Microsoft supports the establishment of OpenAI as a Public Benefit Corporation (PBC) [1] - Microsoft holds an investment stake in OpenAI's nonprofit entity valued at approximately $135 billion [1]