Add ability to open Codex chat in new window in VS Code

I need this badly, open Codex as a new tab. Not only in VSCode but in Cursor as well.

As a reference point, RooCode implements this with an "Open in editor" option, that turns the extension page into a tab, which can be put on any window:

https://github.com/RooCodeInc/Roo-Code/issues/4199

This has been a very useful feature of GitHub copilot for quite a while and would greatly improve the UX of Codex in my view.

Hi may I work on this ? @WhiteyDude

I really want this!!! PLEASE!!!

Adding to the pleases +1

+1

Adding to the pleases +1

+1

+1

Edit: If you want a temporary solution, just make a new VS code window and use the "Add folder to workspace" command to open your repository. Doing this opens a second VS code window in the same repository (instead of just focusing the existing vscode window where your repo is already opened) and allows you to use codex.

+1

People, please stop with the +1's, just react to the original comment if you want to join. And you can subscribe to see notifications via the button in the sidebar.

+1's just keep sending everyone worthless emails when they are expecting real updates.

+1

With recent versions of the Codex IDE Extension, you can use the "Codex: New Codex Agent" command from the command palette. This creates a new Codex instance in a window (as opposed to a side bar) that you can then drag out of the VS Code Workspace window.

With recent versions of the Codex IDE Extension, you can use the "Codex: New Codex Agent" command from the command palette. This creates a new Codex instance in a window (as opposed to a side bar) that you can then drag out of the VS Code Workspace window.

That is a good workaround and gets me > 90% there. Still value in being able to drag the current session into a new window this works for everything else. Wish VS Code had better windowing/docking/undocking functionality.

With recent versions of the Codex IDE Extension, you can use the "Codex: New Codex Agent" command from the command palette. This creates a new Codex instance in a window (as opposed to a side bar) that you can then drag out of the VS Code Workspace window.

Is this still supposed to work? For me it opens an empty tab.
<img width="705" height="552" alt="Image" src="https://github.com/user-attachments/assets/e99ca30d-593c-468b-84bc-b5a9cbbbc350" />

config.toml (redacted)

model = "gpt-5.3-codex"
model_provider = "azure"
approval_policy = "on-request"
model_reasoning_effort = "high"
personality = "pragmatic"

[model_providers.azure]
name = "Azure OpenAI"
base_url = "<Azure Foundry Endpoint>"
env_key = "<Azure Foundry Key>"
wire_api = "responses"

[windows]
sandbox = "elevated"

Yea, but it's only one tab at a time, which makes it pointless. This one missing thing makes Claude Code's extension 1,000x more valuable.

I have swapped to OpenCode to solve this issue,

https://marketplace.visualstudio.com/items?itemName=zgy.opencode-vscode-ui

Same as LukasWillin. I got just empty window.