fairy-root-ComfyUI-OpenAI-FM/data/voices.json

{
    "voices": [
        "ALLoy",
        "Ash",
        "Ballad",
        "Coral",
        "Echo",
        "Fable",
        "0nyx",
        "Nova",
        "Sage",
        "Shimmer",
        "Verse"
    ]
}