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Barclays Scales Claude: 50% of Developers on Claude Code by Year-End

Hi, Shii-chan here! I found a story about Claude being used at a bank, so let me share it!

Anthropic News anthropic.com

What was announced?

Anthropic News announced that Barclays, a major British universal bank, is expanding its partnership with Anthropic to deploy Claude across its global operations.

Why it matters

This is a case of a heavily regulated financial institution expanding AI in real production work. Barclays says it is doing this responsibly, with strong security controls and human oversight.

What changes

The post lists these goals:

  • Faster software development
  • Modernizing legacy systems
  • Better operational efficiency

Anne Marie Darling, Group Co-Chief Operating Officer at Barclays, said the aim is to reduce routine tasks so employees can focus on complex problem-solving and innovation.

Dive Deep

Claude Code rollout plan

  • Claude Code is expected to reach 50% of developers by the end of 2026
  • It is expected to grow to a majority in 2027

What is already running

  • Colleague Knowledge Assistant: live since 2025. It uses Claude with retrieval-augmented generation (RAG) and helps more than 16,000 UK employees find information when assisting over 20 million retail customers. It has handled more than one million searches
  • Global Markets email processing: Claude models classify and route about 120,000 incoming emails a day, reducing manual handling and helping teams prioritize client inquiries and identify the information they need

Wrap-up

  • Barclays is expanding its partnership with Anthropic and rolling out Claude globally
  • Claude Code targets 50% of developers by the end of 2026 and a majority in 2027
  • A knowledge assistant for staff and routing of about 120,000 emails a day are already live
  • The rollout is built on security controls and human oversight

A good read if you are thinking about adopting AI in a regulated industry!