OpenAI has introduced Codex, an AI agent designed to take on delegated work, moving beyond the conversational capabilities of ChatGPT. Unlike tools focused on brainstorming or drafting, Codex is engineered to handle tasks that span multiple files, integrate with various tools, and manage repeatable workflows.
Think of it this way: ChatGPT helps you conceptualize the work, while Codex assists in executing it. This new AI agent for work aims to streamline operations by connecting to different systems and taking action.
Its utility extends beyond software development; Codex is particularly adept at tasks requiring synthesis of information from diverse sources, creation and updating of documents, or generating outputs like presentations and spreadsheets. It can also build digital assistants, create dashboards, fix broken processes, and automate mundane duties.
Codex vs. ChatGPT
While ChatGPT excels at interactive problem-solving and content generation, Codex is positioned as the tool for tangible task completion. This distinction is crucial for understanding how OpenAI envisions these AIs complementing each other in a professional setting, as explored in OpenAI's GPT-5 Codex Redefines Agentic Software Engineering.
Codex is not intended to replace human oversight. OpenAI likens it to an eager assistant: fast and capable, but still requiring clear direction and final approval. The core principle is to use ChatGPT for thinking through tasks and Codex for moving them forward.