OpenAI Codex

OpenAI's coding agent across CLI, IDE extension, cloud and ChatGPT.

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What it does

Codex runs coding tasks locally through the open-source Codex CLI or in cloud sandboxes, can work in parallel worktrees, and proposes pull requests. It is available to ChatGPT plan users and through the API.

Pricing

Included with ChatGPT plans or API usage — see site

Best for

Parallel task delegation
PR generation
Terminal coding

Appears in

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HTML (websites)

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Markdown (GitHub README)

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