config.json

{
  "encoders": {
    "Encoder.mlmodelc": {
      "weight_format": "palettized_lut6_mixed_fp16",
      "note": "original export; labeled int8 historically, actual compression is 6-bit LUT palettization"
    },
    "Encoder_v2.mlmodelc": {
      "weight_format": "int8_linear_per_channel",
      "source_precision": "fp16",
      "fixes": "https://github.com/FluidInference/FluidAudio/issues/760"
    },
    "EncoderInt4.mlmodelc": {
      "weight_format": "int4"
    }
  }
}