Codex++ 2026: Complete Guide to Download, Installation, and AI Model Integration (With Latest Setup Package)
A detailed walkthrough for setting up Codex++ (v1.2.32) on Windows—including download, installation, configuration for DeepSeek and other AI models...
Codex++ is an external enhancement launcher and management tool for the Codex App. It doesn’t modify the original Codex installation files; instead, it uses the Chromium DevTools Protocol to inject enhancement scripts via an external launcher, keeping the original app intact.
With Codex++, users can integrate a variety of AI models into Codex—such as domestic options DeepSeek and Xiaomi MiMo, as well as international models like Gemini, Claude, and Grok—without needing a ChatGPT or Codex subscription. To get started, you need Codex installed and logged in, the Codex++ setup package, and an API key for your chosen model.
Step 1: Download and Install Codex++
The 2026 latest version (v1.2.32) of Codex++ for Windows is available for download. Once you have the setup file (CodexPlusPlus-1.2.32-windows-x64-setup.exe), double-click it to start installation:
1. Click "Next" in the setup wizard.
2. Choose a non-system drive (e.g., D: drive) instead of the default C: drive by clicking "Browse".
3. Confirm the installation directory and click "Install".
4. Wait for completion and click "Finish". Two desktop shortcuts will be created: Codex++ and Codex++ Management Tool.
Step 2: Obtain DeepSeek API Key
To integrate DeepSeek:
1. Visit the DeepSeek platform (https://platform.deepseek.com/sign_in) and log in.
2. Go to "API keys" from the left menu and click "Create API key".
3. Name your key and click "Create".
4. Copy the key and save it locally—once the page closes, you can’t view it again (create a new one if lost).
5. Close the window to see your new key listed.
Step3: Configure Codex++ for DeepSeek
First, fully close Codex (including from the taskbar). Then:
1. Open the Codex++ Management Tool.
2. It auto-detects Codex’s location and version.
3. Go to "Vendor Configuration" and click "Add Vendor".
4. Select "DeepSeek" from preset templates.
5. Paste your API key, click "Get from upstream" to populate models, then save.
6. Select DeepSeek and click "Use".
7. Test with "Send hi test"—a HTTP 200 response confirms success.
Using Enhanced Codex
Launch Codex via the Codex++ shortcut. You’ll see the Codex++ version and a green dot (running) in the top-right. The model menu at the bottom now includes DeepSeek models for switching.
Troubleshooting Common Issues
1. No Codex++ interface: Use the Codex++ shortcut (not original Codex). If issues persist, restart via management tool or check logs/diagnosis.
2. Upstream Worktree Difference: Codex++’s function updates the remote branch first (equivalent to `git worktree add -b
3. Impact on Codex: No effect since it’s external. Update Codex++ scripts if Codex’s page structure changes after updates.
Sources
- Ganhuo1's Blog on Cnblogs: https://www.cnblogs.com/ganhuo1/p/21314446