Moody's warns banks may become dependent on a handful of AI vendors

Moody's cautions that the banking sector's drive to adopt artificial intelligence may leave large institutions at the mercy of a few Silicon Valley companies, exposing them to service disruptions and inflated costs. Although AI could eventually lower expenses and boost earnings across the City and Wall Street, achieving those gains will demand substantial spending, and competitive pressures may diminish the net advantage.

The agency highlights heightened concerns around data privacy, cybersecurity, fraud, and rapid deposit withdrawals linked to over-reliance on a narrow AI provider base. It notes that a major outage at a single model or cloud supplier could quickly ripple through multiple banks, prompting regulators to scrutinise operational resilience. Moody's also warns that profit-seeking AI firms such as OpenAI and Anthropic could leverage their market position to set higher prices, creating credit risks for financial firms that still retain control over proprietary data.