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UBS says it does not permit the use of external AI models for client transactions

By Thomson Reuters Oct 27, 2026 | 3:18 AM

ZURICH, Oct 27 (Reuters) – UBS will not allow the use of external AI models to execute actions on behalf ​of clients, CEO Sergio Ermotti said ‌on Tuesday.

Concerns that sophisticated AI agents could harm the financial system have risen within the banking industry. Major US banks have been blocking third-party AI ‌agents’ ​access to customer accounts, ⁠people familiar with the ⁠matter have said.

“You heard recently some banks are being exposed to potential misbehaviors of models in managing clients’ accounts and ​shifting deposits and optimizing deposits,” Ermotti told a science conference. “We are not allowing models ⁠to enter into the ⁠bank and do that.”

“When you ​talk about AI, the most important issue right ​now is to make sure that we ‌don’t get AI models that drive outcomes for clients in a black box,” Ermotti said.

UBS’ integration of fallen rival Credit Suisse, ⁠which it acquired in 2023, forced it to slow its deployment of AI somewhat, but now ⁠the lender ‌can put even more emphasis on ⁠technology, Ermotti added.

“I’m glad that ​we ‌are almost over with the integration ​and ⁠therefore we can now put even more emphasis around technology and how we can help the bank become more effective and efficient.”

(Reporting by Ariane Luthi; Editing by Kirsti Knolle and ​Edwina Gibbs)