Config VS Code (Insiders)

For the foreseeable future you need to install the VS Code Insiders version!!! See here

Ctrl+Shift+P : Preferences: Open User Settings (JSON)

This is an example. Please note the "qwen3-32" selects the model not "name": "qwen3-32"

{
    "github.copilot.chat.customOAIModels": {
        "qwen3-32b": {
            "name": "qwen3-32b",
            "url": "https://chat-ai.academiccloud.de/v1",
            "toolCalling": false,
            "vision": false,
            "thinking": true,
            "maxInputTokens": 128000,
            "maxOutputTokens": 8192,
            "requiresAPIKey": true
        }
    },
    "workbench.startupEditor": "none"
}