OpenAI Codex CLI

OpenAI's open-source coding agent for your terminal

Code & DevelopmentFreemium

OpenAI Codex CLI is an open-source, lightweight command-line coding agent that brings OpenAI models into your terminal with the ability to read, write, and execute code. It operates in three safety modes—Suggest, Auto Edit, and Full Auto—letting developers control how autonomously the agent acts. Codex CLI passes the full context of your project to the model and can install packages, run tests, and fix errors iteratively until the task is complete.

Key Features

• ✓Three safety modes
• ✓Open source
• ✓Terminal native
• ✓File read/write
• ✓Test execution
• ✓Package management