Financial Stability Board warns on frontier AI after G20 letter

ASHEVILLE, NORTH CAROLINA, 31 AUGUST 2026 —

The Financial Stability Board (FSB) on Thursday released a letter from its chair, Andrew Bailey, addressed to G20 finance ministers and central bank governors ahead of their meeting in Asheville, North Carolina, warning that frontier artificial‑intelligence (AI) models could heighten systemic risk in the global financial system.

He highlighted “fragilities in sovereign‑debt markets; vulnerabilities in private credit and stretched asset valuations, particularly AI‑related investments,” and warned that “the recent increase in the use of leverage in equity markets is interacting with high valuations, market concentration and AI‑related optimism in a way that could amplify a future market correction.” The letter underscores the FSB’s view that the rapid emergence of frontier AI – models that exhibit increasingly sophisticated autonomy, problem‑solving abilities and threat capabilities – adds a new dimension to financial‑system risk, especially through cyber‑risk channels.

The chair called on jurisdictions to “take appropriate steps to support safe and responsible model release and deployment as a priority.” For financial firms, he stressed the need for “robust response and recovery capabilities and resilience amongst critical third‑party technology providers and other common service providers.” The FSB said it is examining what actions it can take, within its mandate and expertise, to address these challenges.

The FSB’s remit is to coordinate, at the international level, the work of national financial authorities and international standard‑setting bodies, and to develop and promote the implementation of effective regulatory, supervisory and other financial‑sector policies in the interest of financial stability. It brings together national authorities responsible for financial stability in 24 countries and jurisdictions, international financial institutions, sector‑specific international groupings of regulators and supervisors, and committees of central‑bank experts.

In addition, the board conducts outreach with roughly 70 other jurisdictions through its six Regional Consultative Groups.

The letter notes that the FSB’s Secretariat is based in Basel, Switzerland, and is hosted by the Bank for International Settlements. Andrew Bailey, governor of the Bank of England, chairs the board. The organization’s structure and broad membership give it a platform to influence policy responses to emerging risks, including those posed by frontier AI, across a wide range of economies.

By flagging the intersection of AI‑driven optimism, high market valuations and leveraged equity positions, the FSB signals that regulators may soon scrutinise AI‑related investment products and the underlying technology providers that support them. The emphasis on cyber‑risk suggests that future supervisory frameworks could incorporate requirements for testing AI model security, monitoring for malicious use and ensuring that third‑party technology vendors maintain adequate resilience standards.

The FSB’s outreach to its Regional Consultative Groups indicates that the board intends to engage a broad set of jurisdictions in shaping a coordinated response. While the letter does not specify concrete measures, it points to the board’s willingness to explore actions that fall within its mandate, which could include developing guidance, best‑practice standards or recommending supervisory tools to mitigate AI‑related systemic threats.

The publication of the letter ahead of the G20 finance ministers’ meeting underscores the urgency the FSB places on the issue. It also provides a reference point for national regulators as they prepare for discussions on financial stability, sovereign‑debt pressures and the growing influence of AI on market dynamics. The board’s call for “safe and responsible model release and deployment” may shape forthcoming G20 deliberations and influence the regulatory agenda of member jurisdictions.

Related: Bank of England · Andrew Bailey · Asheville, North Carolina