GPT-5.6 models not available in Codex Extension in Cursor

Codex
1

Why i cant use GPT-5.6 models in Codex Extension in Cursor? But i can use them in Codex-CLI. Tried to update the extension and Codex-CLI but didn’t work

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3

me too! Any one found a fix?

4

Same issue here! Any updates?

6

Found a similar method on Reddit, tho you will still need VS Code to install extension:

This was the process and hope it helps someone:

Step 1: Download VS Code

Step 2: Install the Codex extension in VS Code

Step 3: Go to %USERPROFILE%\.vscode\extensions and copy openai.chatgpt-26.5707.41301-win32-x64 folder to %USERPROFILE%\.cursor\extensions\

Step 4: Open the extensions.json file in %USERPROFILE%\.cursor\extensions\ and change the relative paths and version of Codex (openai.chatgpt) extension to actual (so it will be everywhere 26.5707.41301 instead i.e. 26.5623.141536

Step 5: Restart Cursor

That’s it.

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7

Hi, I also found an additional method:

  1. In Cursor press: Ctrl+Shift+P
  2. Go to: “Preferences: Open User Settings (JSON)”
  3. Add these settings inside the top-level JSON object, preserve any settings already present; just add the two properties with the necessary commas:
    {
    “chatgpt.runCodexInWindowsSubsystemForLinux”: false,
    “chatgpt.cliExecutable”: “C:\Users\YourUserName\AppData\Local\Programs\OpenAI\Codex\bin\codex.exe”
    }
  4. Saving and restart Cursor
8

Thanks. The path for me was

“chatgpt.cliExecutable”: “C:\\Users\\username\\AppData\\Local\\OpenAI\\Codex\\bin\\VERSION\\codex.exe”,

9

it just got updated in Cursor, though I started using CLI and it’s cool too