Recent IMF warnings about $1.4 trillion in circular AI financing among hyperscalers and weaker AI firms have amplified bubble concerns, coinciding with OpenAI's downward revenue revision to around $50 billion annualized and Broadcom's caution on unsustainable spending. Asian chip stocks have sold off sharply amid fears of overvaluation and competition from far cheaper Chinese open-weight large language models that have cut U.S. labs' market share. Google’s broad release of Gemini 4 Argon at competitive pricing and Anthropic’s internal agent progress underscore ongoing capability gains, yet mounting debt, concentrated exposures, and plateauing returns for some frontier models are pressuring trader sentiment ahead of Anthropic’s Q3 updates and potential regulatory scrutiny on safety evaluations.