---
title: "Am I the last person to realize ChatGPT can basically be Codex’s second brain? — Stuff That Spins"
description: "I hadn’t used regular ChatGPT chat mode in a while, and apparently it has gotten surprisingly good at reading and understanding an entire GitHub repo. Since Ch…"
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date: "2026-07-27T13:47:59+00:00"
modified: "2026-07-27T18:04:51.1048+00:00"
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# Am I the last person to realize ChatGPT can basically be Codex’s second brain?

**Source:** Unknown  
**Published:** July 27, 2026  
**Original:** https://www.reddit.com/r/ChatGPT/comments/1v80xhn/am_i_the_last_person_to_realize_chatgpt_can/  

## On this page

- [Overview](#overview)

<a id="overview"></a>

## Overview

I hadn’t used regular ChatGPT chat mode in a while, and apparently it has gotten surprisingly good at reading and understanding an entire GitHub repo. Since Chat and Work/Codex have separate usage limits, I’ve been trying this: Ask question in chat mode and ask ChatGPT read the repo and do the deeper thinking (w/ 5.6 sol) Keep adding context to the same conversation Share the chat link with Codex (w/ 5.6 luna) Let Codex use that context and focus on actually changing the code So ChatGPT is basic

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