Codex

OpenAI’s software-development agent tools with local terminal workflows and cloud task entry points for inspecting, modifying, checking and reviewing projects.

Features described in official documentation

• The CLI can inspect local repositories, edit files and invoke existing project commands
• Interactive tasks, code review and non-interactive script/CI workflows are described
• Cloud tasks use published environments and separate workspaces; repositories, dependencies and access are configured per environment

Suggested starting workflow

• Use a small reversible project and define scope and acceptance criteria
• Ask the tool to read relevant code, then inspect the plan, commands and diff
• Run the project’s own checks and review results; check environment and permissions before cloud work

These are editorial starting suggestions based on the purpose, not a workflow tested by this site.

Before you use it

• This entry is the Codex tools/agent product, not every historical API model with Codex in its name; a model shutdown does not retire the whole product
• Local CLI, cloud and desktop developer views have different account, network and environment permissions; full capabilities are not assumed equivalent
• Selected plan facts and account, usage and billing boundaries are listed below. Unknown prices are not inferred; regions, commercial use and full task outcomes still require review. No sign-in or model task was performed in this batch.