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

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No status update yet. As soon as I have one, I’ll reply in this thread.

In the meantime, the options are the same:

  1. Keep Google API Key enabled and pick a different Gemini model in the model selector, like Gemini 3.7 Flash. With your key it works as usual. This was confirmed in another thread: BYOK Gemini Flash 3.8 Unauthorized User API key
  2. If you specifically need Gemini 3.8 Flash, turn off the Google API Key toggle in Cursor Settings > Models, and the model will run on your Cursor plan.

Let me know if any of this doesn’t work.