OpenAI万亿美元“豪赌”算力，巨头“循环融资”谜局拉响泡沫预警；美股遭遇“黑色星期五”，七巨头一夜蒸发5.5万亿元；高市早苗日本首相之路生变

Group 1 - OpenAI has engaged in a $1 trillion bet on AI infrastructure, partnering with companies like Nvidia, Oracle, and AMD through high-value agreements [4][5][8] - The unique "circular financing" model, where suppliers invest in customers who then purchase their products, has raised concerns reminiscent of the pre-burst internet bubble [6][12] - OpenAI's annual revenue is estimated at $12 billion, with a loss of $8 billion, highlighting the need for continuous private financing to support its ambitious investments [15][20] Group 2 - Nvidia has committed to invest up to $100 billion in OpenAI, contingent on the progress of data center construction, while Oracle has signed a $300 billion cloud services agreement [10][11] - AMD has granted OpenAI warrants for up to 10% of its shares in exchange for purchasing and co-developing next-generation AI chips [10][11] - Analysts have expressed concerns that Nvidia's direct investment, which constitutes about 67% of its revenue, poses a higher risk than similar historical precedents [17][20] Group 3 - The current AI investment bubble is estimated to be 17 times larger than the internet bubble, raising alarms among global central banks and economists [15][17] - The concentration of market capitalization among the top five U.S. companies has reached a 50-year high, with extreme valuation levels compared to the year 2000 [17][20] - Despite the risks, tech executives argue that this investment phase is different, suggesting it could lead to significant technological advancements [18][20] Group 4 - The expansion of AI faces challenges such as profitability gaps, energy shortages, and GPU depreciation risks, which could hinder growth [21][22] - A report indicates that to maintain current growth rates, the global AI sector will require approximately 200 gigawatts of computing power by 2030, with a projected shortfall of 50 gigawatts [21][22] - The sustainability of AI investments is questioned if they come at the expense of local communities and if they do not yield measurable profits [22]