I’m trying to integrate Gemini Live into my app, using https://github.com/google-gemini/live-api-web-console/ as a reference. In the starter repo, the API key is used directly, but in my app, I want to use the ephemeral token instead. The problem is that the ephemeral token generated on the backend…

Yes, I saw that thread and tried the same, but didn’t work.

Hi @Goutham_Subramanyam , The core of the issue likely lies in a mismatch between how your backend generates the ephemeral token (especially regarding the v1alpha API version) and how your frontend attempts to use that token to establish a WebSocket connection with the Gemini Live API. The error me…

@Goutham_Subramanyam did you solve the problem? I get the same problem with ephemeral token. Backend and Frontend use the same “api_version=‘v1alpha’” and the model gemini-2.5-flash-native-audio-preview-12-2025 or gemini-2.0-flash-exp.

Issue with ephemeral token in Live API

Gemini API

Benjamin_Hughes November 27, 2025, 8:24am 3

Have you added the v1alpha in both backend and frontend? Gemini Api Ephemeral token not working - #6 by Benjamin_Hughes

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Issue with ephemeral token in Live API

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