Google BYOK 401 with new AI Studio AQ. auth keys (direct Gemini API works)

No status update yet. As soon as there is one, I’ll post it right here.

@Jayesh_Singh, honestly, there’s currently no way to run Gemini 3.8 Flash using your own Google key. That’s exactly the issue we’re tracking. For now, you’ve got two options:

  1. Keep Google API Key enabled and pick a different Gemini model, for example Gemini 3.7 Flash. It works fine with your AQ. key. Confirmed in this thread: BYOK Gemini Flash 3.8 Unauthorized User API key
  2. If you specifically need 3.8 Flash, turn off the Google API Key toggle in Cursor Settings > Models. Then the model will run on your Cursor plan.

@valieff, got your point about BYOK. I’ve shared with the team that this is an important use case for you. I can’t give an ETA, but it’s on our radar, and I’ll update the thread as soon as I have anything to share.