Gemini Live API Default Voice

Gemini API
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1

Hi all

What’s the default voice for Gemini 3.1 Flash Live Preview? In Thai, not specifying any voiceName result in near-native accent. I tried to find the exact voice through AI Studio but all of the listed ones sound like foreigners trying to speaker Thai (like a lot worse!).

Reason I need to pinpoint the voice because I need to be sure the gender does not change. In Thai, we have polite particles and first person singular pronouns that are different between male and female.

this._session = await this._genAI.live.connect({model: this._config.model,

    config: {
      responseModalities: [Modality.AUDIO],
      systemInstruction: this._config.systemInstructions,
      speechConfig: {
        // empty speech config results in much better thai accent but you can't
        // be confident the default won't change.
        // voiceConfig: { 
        //   prebuiltVoiceConfig: {
        //     voiceName: "xxx",
        //   },
        // },
        languageCode: "th-TH",
      },
    },