Codex is OpenAI’s series of AI coding tools that help developers move faster by delegating tasks to powerful cloud and local coding agents.

Aug 10, 2021 · We’ve created an improved version of OpenAI Codex, our AI system that translates natural language to code, and we are releasing it through our API in private beta …

Codex CLI is a coding agent that you can run locally from your terminal and that can read, modify, and run code on your machine, in the chosen directory. It’s open source, built in Rust for …

May 16, 2025 · Technical teams at OpenAI have started using Codex as part of their daily toolkit. It is most often used by OpenAI engineers to offload repetitive, well-scoped tasks, like …

Use Codex in your editor to chat, edit, and preview changes seamlessly. With context from opened files and selected code, you can write shorter prompts and get faster, more relevant …

You can ask Codex to read, write, and execute code in your repositories, in order to answer questions or draft PRs. When you start a cloud task, Codex provisions a sandboxed cloud …

Sep 15, 2025 · Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or …

Learn how to use Codex by OpenAI. One agent for everywhere you code—included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.

Nov 19, 2025 · Introducing GPT-5.1-Codex-Max, a faster, more intelligent agentic coding model for Codex. The model is designed for long-running, project-scale work with enhanced …

Aug 7, 2025 · Codex helps developers turn natural language into working code, navigate complex codebases, and accelerate development. This resource outlines Codex’s key capabilities for …