Claude Code vs OpenAI Codex

A command-line agent that works inside your repository: it reads files, plans a change, edits, and runs commands while showing the tool calls it makes. The design assumption is that a developer is watching the diff, so approval is per…

Tools Verified 9 Nov
Entry price Included with Claude Pro/Max plans; API billing for programmatic use Included in paid ChatGPT plans; usage limits vary by tier
Free tier Paid Paid
Deciding factor You want to iterate on a change locally, interrupt… versus: The task is describable in a ticket and can…
Bottom line

Claude Code is a terminal agent you watch; Codex is a cloud agent you hand a ticket.

The short answer

Both take a task in natural language and change code. Claude Code runs in your terminal against your files, which makes it good for exploratory work where you want to see the changes as they happen. Codex runs in an isolated environment and returns a patch or a pull request, which makes it good for well-scoped tickets. The difference is supervision, not capability.

Facts

Option Pricing Free tier
Claude Code Included with Claude Pro/Max plans; API billing for programmatic use Check pricing ↗ Paid
OpenAI Codex Included in paid ChatGPT plans; usage limits vary by tier Check pricing ↗ Paid

Pick Claude Code if

You want to iterate on a change locally, interrupt it, and keep the edits in your working tree.

Pick OpenAI Codex if

The task is describable in a ticket and can be reviewed as a diff afterwards.

What would change our mind

A pricing change or a free-tier removal flips this comparison faster than any feature release. Both pages are re-checked weekly, and the date above tells you how much to trust the numbers.

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