Barclays scales Claude to upgrade operations and improve client experience

Barclays, the British universal bank, is expanding its strategic collaboration with Anthropic to integrate secure, enterprise-grade AI systems across its global operations.

Barclays is extending Claude across the bank to accelerate software development, modernize legacy systems, and improve operational efficiency. As part of this rollout, Barclays expects Claude Code adoption to reach 50% of its developer population by the end of 2026, rising to a majority of software engineers in 2027.

Integrating AI across a large, complex, and highly regulated organization requires both capable technology and disciplined governance. Expanding its collaboration with Anthropic reflects a shared commitment to deploying AI responsibly, reliably, and in ways that deliver real outcomes, such as providing faster support for customers.

The capability, which has been live since 2025, is powered by Claude through a retrieval-augmented generation architecture. More than 16,000 colleagues have adopted the assistant, and it has handled over one million searches.

As Barclays continues to expand its use of AI, responsible deployment remains central to the partnership. The bank applies robust governance, security controls, and human oversight to AI use cases, ensuring technology is deployed safely and effectively across the organization.

The result is faster access to information and quicker support for customers.

“The true measure of any technology is the impact it has on customers, clients, and colleagues, and the outcomes it enables,” said Anne Marie Darling, Group Co-Chief Operating Officer at Barclays. “Expanding the use of Claude across Barclays is about more than adopting AI. It is about transforming how work gets done: reimagining processes, enhancing customer and client experiences, and building a simpler, more efficient organization within a secure and well-governed environment. By reducing time spent on routine activities and streamlining decision-making, we can enable colleagues to focus their expertise where it matters most, solving more complex problems, accelerating innovation, and delivering better outcomes for our customers, clients, and business.”

“Software engineering and cyber security are both being reshaped by increasingly capable AI systems,” said Craig Bright, Group Co-Chief Operating Officer at Barclays. “We're moving towards AI as an increasingly agentic capability embedded within how we build, test, secure, and operate technology. At Barclays, we're using Claude to help modernize legacy platforms, improve software quality, and allow our technical experts to focus on the most complex challenges. The combination of skilled engineers, cyber specialists, and trusted AI capabilities has the potential to fundamentally improve how technology is developed and managed across large-scale enterprises.”

One example of the partnership already in action is Barclays’ Colleague Knowledge Assistant, which helps Barclays UK employees find information and answers more quickly when supporting their over 20 million UK retail customers.