OpenAI has introduced new capabilities for its software engineering agent Codex, including reusable cloud development environments accessible from any device, a revamped command-line interface (CLI) with voice controls, and new code review tools. The company also rolled out Codex Security Cloud for scanning GitHub repositories and preparing fixes, alongside API enhancements such as a new Decisions API and an updated Agents API. These updates were announced at OpenAI’s Dev Day on Tuesday.