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Cisco scales Codex into enterprise engineering workflows

OpenAI says Cisco has deployed Codex broadly inside production engineering, using agentic workflows across large multi-repo systems. The case study includes build-time, throughput, and migration results tied to specific internal programs.

OpenAI’s new case study says Cisco is scaling Codex into real-world enterprise engineering workflows.

  • Scope: Integrated into production engineering across large, multi-repo systems, including C/C++-heavy codebases, while maintaining review, security, governance, and compliance requirements.
  • Build optimization: A cross-repo effort spanning 15+ interconnected repos reportedly cut build times ~20% and saved 1,500+ engineering hours/month across global environments.
  • Defect remediation: Cisco’s CodeWatch program used Codex-CLI for iterative repairs in large C/C++ codebases—work that took weeks reportedly completed in hours, with a claimed 10–15× throughput improvement.
  • Migrations: Splunk teams used Codex to handle repetitive UI changes moving multiple frontends from React 18 → React 19, shrinking weeks of work into days.