2.4.x
ChatGPT Codex is OpenAI’s coding agent, not Cursor’s built-in chat. This guide installs the official extension, walks through a small reversible edit, and covers CLI, GPT-5-Codex, and common setup failures.
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Streaming responses can fail before completion. This guide explains the error, common causes from OpenAI’s side to your network and client, practical fixes, and how developers can harden API streaming.
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