how to use openai codex in vscode

3 weeks ago - In VS Code, Codex opens in the right sidebar by default. If you’re using VS Code, restart the editor if you don’t see Codex right away. If you’re using Cursor, the activity bar displays horizontally by default.

reddit.com › r/openai › codex extension for vscode

r/OpenAI on Reddit: Codex extension for VSCode

August 28, 2025 -

I tried using the new Codex extension for vscode today with high reasoning with my peasant Plus plan. I used it for physics based applications and I am honestly very impressed.

Before, I used to use GPT5 thinking model for brainstorming and then generating prompts for Sonnet 4 to code but now Codex it does all of it in the same prompt. The coding accuracy and reasoning is top notch. For me, it has crossed the threshold where I can say I don’t need Gemini (for reasoning) or Claude (for coding) anymore. It also can process multiple workflow in the background while you discuss the next steps with it. It’s crazy good and save a lot of time.

The number of requests also seem to be reasonably high on the Plus subscription: 30-150 per 5 hours.

Let me know your experiences.

Top answer

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It’s crazy good for me! Somehow the Cloud version was not good enough for me earlier, now they must have updated the model recently or I might have gotten better with giving prompts. I use it to generate synthetic data for Data Analytics demos using faker and dbldatagen. Initially it was struggling with errors specially around limitations of MS Fabric’s PySpark, T-SQL, namespace format, etc. But then I created a guideline file and would ask it to update the guideline every time it made a mistake and corrected it. Now, it’s flawless, no more errors. Also the real life scenarios it brings in for synthetic data generation logic is really good.

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How do you configure the extension to not ask for permission to read every. Single. File.

Discussions

OpenAI’s Codex CLI extension for Visual Studio Code

Hi OpenAI team, I am trying to play around OpenAI’s Codex CLI extension in VScode called “andromeda-codex”. I am using Windows Visual Studio code. Suggest and Auto Edit mode works perfectly. It is powerful coding tool for me. I suggest using auto-edit mode and suggest mode More on community.openai.com

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The docs seem to indicate you can use your OpenAI API key with the VS Code Extension, but there isn’t a lot of detail on how to actually configure that. Can we get some clarity around what exactly needs to be updated in the extension config to enable this? I’ve hit my codex local limit ... More on community.openai.com

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How do you integrate Codex into something like Visual Studio Code

https://github.com/features/copilot More on reddit.com

r/OpenAI

1

November 1, 2022

Is there a standard/official way to run OpenAI's Codex in Visual Studio?

The only "official" integration is GitHub Copilot. It's well integrated into everything else, but you can only use it with Copilot. There's a number of AI assistant-related extensions , but I've never seen anyone talk about any of them specifically. The VS Extension ecosystem is pretty dead, I think they are trying to revive it with the new Extensibility framework. Codex seems to be its own independent tool though, so I don't know how exactly you'd integrate that. More on reddit.com

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June 6, 2025

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