OpenAI Codex

OpenAI Codex has evolved into a standalone agentic coding tool, available via a dedicated macOS app and CLI. It's designed for autonomous task delegation: given a prompt, it plans, implements and iterates across files with minimal intervention. Our teams have found it effective as a high-velocity drafting tool, particularly for greenfield tasks and repetitive implementation work. However, its tendency to suggest logically sound but functionally outdated library patterns means that automated testing and human review are essential. As with other agentic tools in this Radar, the risk of accumulating subtle technical debt is real and proportional to the level of autonomy teams grant it.