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Connect the ChatGPT desktop app for Windows to the Sphinx LLM Gateway.

Prerequisites

Before you begin, make sure you have:
  • A Windows computer
  • Your Sphinx API token
  • Permission to install applications and approve a Windows User Account Control prompt

Install the Sphinx LLM Gateway

1

Download ChatGPT for Windows

Go to chatgpt.com/download and download the ChatGPT desktop app for Windows.
2

Download the Sphinx LLM Gateway installer

Open the Sphinx LLM Gateway installer in Google Drive, then click Download.
3

Run the gateway installer

Open your downloads and double-click the downloaded .exe file.
4

Allow the installer to run

If Microsoft Defender SmartScreen displays Windows protected your PC, click More info.
Windows protected your PC warning showing the More info link

Microsoft Defender SmartScreen warning with the More info link

Confirm that the app is Codex Sphinx LLM Gateway Setup.exe, then click Run anyway.
Windows protected your PC warning showing Codex Sphinx LLM Gateway Setup.exe and the Run anyway button

Run the Codex Sphinx LLM Gateway installer

Windows may list the publisher as unknown. Continue only if you downloaded the installer from the Google Drive link above.
5

Complete the setup wizard

On the welcome screen, click Next.
Welcome screen for the Codex Sphinx LLM Gateway setup wizard

Codex Sphinx LLM Gateway setup wizard

Enter your Sphinx API token, then click Next.
Codex Sphinx LLM Gateway setup wizard with a field for the Sphinx API token

Enter your Sphinx API token

When the installer is ready, click Install.
Codex Sphinx LLM Gateway setup wizard showing the Install button

Install the Codex Sphinx LLM Gateway

After the installation completes, click Finish.
Successful Codex Sphinx LLM Gateway installation with the Finish button

Complete the Codex Sphinx LLM Gateway setup wizard

Keep your API token private. Do not share it or include it in screenshots.
6

Start ChatGPT

Launch the ChatGPT desktop app and complete the introductory prompts.
7

Finish Windows setup

When ChatGPT asks for one-time permission to work on your computer, click Finish setup. In the Windows User Account Control prompt, click Yes.
ChatGPT Finish Windows setup screen with a User Account Control prompt and instructions to click Yes

Grant ChatGPT one-time permission to finish Windows setup

Verify the connection

After setup, ChatGPT opens to the main chat page. Confirm that Sphinx Gateway appears in the bottom-left corner.
ChatGPT main chat page showing Sphinx Gateway in the bottom-left corner

ChatGPT connected to the Sphinx Gateway

You can now start a chat using the Sphinx LLM Gateway.