**Investor warnings and surging debt financing are shaping trader sentiment around whether the AI bubble bursts soon.** As of early October 2026, hyperscalers including Amazon, Microsoft, Alphabet, Meta, and Oracle have issued roughly $200 billion in bonds in the first half of the year—nearly double the prior full-year total—to fund data centers, GPUs, and power infrastructure, with additional off-balance-sheet structures like SPVs and leasing deals emerging. Ray Dalio highlighted classic bubble signals from concentrated debt and climbing rates, while Michael Burry and others flagged unsustainable capex consuming nearly all operating cash flow alongside falling inference prices for large language models. Frontier labs continue rapid releases—such as Claude Opus 5.5 and GPT-6 variants—while collaborating on AI safety standards after September calls to slow development, delaying some IPO plans. These dynamics keep resolution thresholds fluid amid ongoing model progress and earnings reports.