videosphere
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    GcpTtsVoiceFamilyId:
        | "chirp3-hd"
        | "neural2"
        | "wavenet"
        | "standard"
        | "studio"
        | "polyglot"
        | "other"

    Voice family / model type inferred from a GCP voice resource name. Gemini-TTS and Instant Custom Voice use different APIs and are not listed here.