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

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ZURICH, Oct 27 : Swiss bank 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 an event at Zurich's ETH university, the SCION Day 2026 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," he added.

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

"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," he said.

UBS has said it expects to largely conclude the integration of Credit Suisse by the end of this year.

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