最新报道:OpenAI's valuation surge to $500B has drawn comparisons to historic investment bubbles, fueled by GPT-5's launch and U.S. government deals. The AI sector dominated July's VC funding with 37% of global investments, including Anthropic ($170B) and xAI ($200B). 645 Ventures' Nnamdi Okike warns of market euphoria as companies rapidly secure massive funding, creating a growing divide between top firms like OpenAI and struggling startups. Analysts caution most AI startups won't survive long-term, with OpenAI's valuation serving as a key sustainability benchmark. The coming months will test whether current market enthusiasm leads to a correction.