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 ...
OpenAI credits a tool system called Codex for its impressive shipping cadence. Here’s how they use it. OpenAI has shipped new products at a relentless clip in the second half of 2025. Not only has the ...