Greece’s Piraeus Bank just flipped the switch on a new AI hub powered by Anthropic’s Claude models. The move marks a sharp pivot from scattered pilots to bank-wide deployment. Piraeus, with €91 billion in assets as of late 2025 and 368 branches across the country, teamed up with Accenture and Anthropic to centralize AI design, development, and rollout. This hub targets operations, customer service, risk controls, and compliance—core pain points for any major lender. Piraeus Group press release lays it out plainly: the setup integrates Accenture’s Athens-based Data & AI Center with Piraeus’s own roadmap, all on top of a prior cloud migration to Microsoft Azure. Harry Margaritis, Piraeus group chief operating officer, didn’t mince words. “The AI Hub represents a strategic inflection point for Piraeus,” he said.…