What is Codex?

OpenAI
Codex is an AI agent designed to execute real-world tasks and repeatable workflows across various files and tools.

Summary

Codex is an AI agent developed by OpenAI intended for delegating actionable tasks rather than just conversation or brainstorming. While ChatGPT assists with thinking and drafting, Codex focuses on execution, such as gathering information from multiple sources, updating files, and creating documents or slides. It is designed for both technical and non-technical users to automate workflows and handle complex tasks across various digital tools. Users should treat Codex as an eager assistant that requires human oversight and final review to ensure quality.

(Source:OpenAI)