Vendor-published Build optimization / defect remediation
Cisco uses Codex across 15+ repos to cut build times ~20% and speed up C/C++ defect fixing
Cisco embedded OpenAI Codex into production engineering workflows. Codex analyzed build logs and dependency graphs across more than 15 interconnected repositories, and Codex CLI automated iterative defect repair on large C/C++ codebases (CodeWatch).
The numbers (as reported)
| Engineering hours saved | 1,500+ per month |
|---|---|
| Build time | ~20% reduction |
| Defect resolution throughput | 10–15× increase |
| Repositories analyzed | 15+ |
Facts
- Company / subject
- Cisco
- Tools
- OpenAI Codex, Codex CLI
- Codebase
- brownfield
- Work type
- Build optimization / defect remediation
- Stack
- C, C++
- Published
- 2026-01
- Last checked
- 2026-10-17
Caveats
Vendor-published. Publication month per Applied's index of the story.