Having played with the gemini-cli here for 30 minutes, so I have no idea but best guess: I believe that if you auth with a Workspace account it routes all the requests through the GCP Vertex API, which is why it needs a GOOGLE_CLOUD_PROJECT env set, and that also means usage-based billing. I don't think it will leverage any subscriptions the workspace account might have (are there still gemini subscriptions for workspace? I have no idea. I thought they just raised everyone's bill and bundled it in by default. What's Gemini Code Assist Standard or Enterprise? I have no idea).