I tested Claude Code vs. ChatGPT Codex in a real-world bug hunt and creative CLI build — here’s which AI coding agent thinks like a developer and which one ships safer code.

OpenAI has launched GPT-5.3 Codex offering a 25% speed increase over GPT-5.2 Codex, helping developers ship code faster.

GPT-5-Codex promises higher performance and success rates It’s included for Plus, Pro, Business, Edu and Enterprise users The model can use 93.7% fewer tokens on lightweight tasks OpenAI has shared ...

The new OpenAI Codex CLI is a powerful tool designed to transform how developers interact with code. By allowing direct command-line interaction, it simplifies coding tasks, boosts productivity, and ...

OpenAI Codex uses AI to help you understand and write code better. You can set up Codex Command-Line (CLI) to make the coding process a lot simpler and efficient. To ...

Codex CLI is an open-source coding agent from OpenAI, written primarily in Rust, that runs locally on your computer. Codex IDE extension is a coding agent that runs in Visual Studio Code and its forks ...

In a bid to inject AI into more of the programming process, OpenAI is launching Codex CLI, a coding “agent” designed to run locally from terminal software. Announced on Wednesday alongside OpenAI’s ...

We’ve been expecting it for a while, and now it’s here: OpenAI has introduced an agentic coding tool called Codex in research preview. The tool is meant to allow experienced developers to delegate ...

OpenAI announced on Friday it’s launching a research preview of Codex, the company’s most capable AI coding agent yet. Codex is powered by codex-1, a version of the company’s o3 AI reasoning model ...

On Friday, OpenAI engineer Michael Bolin published a detailed technical breakdown of how the company’s Codex CLI coding agent works internally, offering developers insight into AI coding tools that ...

Researchers found that .env files inside cloned repositories could be used to change the Codex CLI home directory path and load a rogue configuration file leading to arbitrary command execution. In a ...