Citigroup has launched Arc, an internal platform to build and scale AI agents across the bank, the company announced in a corporate blog post and press coverage. Per Axios, Arc acts as a centralized “operating system” for agentic AI and will be rolled out to developers first, with plans to expand access over time. Axios reports about 180,000 Citi employees were already using enterprise AI tools on the back end before Arc. The bank’s announcement, quoted by PYMNTS, says agents will “enhance human judgment by taking on tasks such as research, synthesis, preparation, and execution,” and that every agent will be monitored, auditable, and governed. CIO Dive and other coverage note the platform is intended to automate manual tasks such as research and client preparation across business lines.