{
  "schema_version": 1,
  "family": "piper_tts",
  "display_name": "Piper TTS",
  "description": "Native VITS inference for Piper text-to-speech voices using the shared eSpeak-ng frontend.",
  "category": "tts",
  "status": "community",
  "tasks": [
    "tts"
  ],
  "modes": [
    "offline"
  ],
  "languages": [
    "en"
  ],
  "runtime": {
    "tags": [
      "gguf"
    ]
  },
  "capabilities": {
    "tts": [
      "long_form"
    ]
  },
  "options": {
    "request": [
      {
        "name": "speed",
        "type": "float",
        "description": "Speech speed multiplier; larger values produce faster speech.",
        "required": false,
        "min": 0.5,
        "max": 2.0,
        "default": 1.0
      },
      {
        "name": "variation",
        "type": "float",
        "description": "Acoustic latent noise scale.",
        "required": false,
        "min": 0.0,
        "max": 1.0,
        "default": 0.667
      },
      {
        "name": "duration_variation",
        "type": "float",
        "description": "Stochastic duration noise scale.",
        "required": false,
        "min": 0.0,
        "max": 2.0,
        "default": 0.8
      },
      {
        "name": "seed",
        "type": "int",
        "description": "Non-negative generation seed.",
        "required": false,
        "min": 0,
        "default": 1234
      },
      {
        "name": "text_chunk_mode",
        "type": "enum",
        "description": "Long-form text chunking mode.",
        "values": [
          "default",
          "tag_aware",
          "japanese",
          "endline"
        ],
        "required": false,
        "default": "default"
      },
      {
        "name": "text_chunk_size",
        "type": "int",
        "description": "Maximum Unicode codepoints per long-form chunk.",
        "required": false,
        "min": 1,
        "default": 280
      }
    ],
    "session": [
      {
        "name": "espeak_library_path",
        "type": "path",
        "description": "Optional explicit path to the eSpeak-ng shared library.",
        "required": false
      },
      {
        "name": "espeak_data_path",
        "type": "path",
        "description": "Optional explicit path to espeak-ng-data.",
        "required": false
      }
    ],
    "load": []
  },
  "package_defaults": {
    "download": {
      "kind": "huggingface_snapshot",
      "repo": "audio-cpp/audio.cpp-gguf",
      "revision": "main",
      "gated": false
    }
  },
  "packages": [
    {
      "id": "piper_lessac_medium_orig",
      "display_name": "Piper Lessac Medium Original-Dtype GGUF",
      "default": true,
      "format": "gguf",
      "precision": "orig",
      "target_directory": "Piper-TTS-GGUF",
      "files": [
        "Piper-TTS-GGUF/piper-en-us-lessac-medium-orig.gguf"
      ],
      "strip_prefix": "Piper-TTS-GGUF"
    }
  ],
  "dependencies": [],
  "ui": {
    "recommended_package": "piper_lessac_medium_orig",
    "tags": [
      "TTS",
      "GGUF"
    ],
    "docs": [
      "docs/tts.md",
      "docs/community_models/piper_tts.md",
      "docs/gguf.md"
    ]
  },
  "sources": [
    {
      "format": "gguf",
      "roots": {
        "model": ".",
        "weights": "$gguf"
      },
      "files": {
        "config": "model:config.json"
      },
      "tensors": {
        "weights": {
          "source": "weights:",
          "prefix": "weights"
        }
      }
    },
    {
      "format": "safetensors",
      "roots": {
        "model": "."
      },
      "files": {
        "config": "model:config.json"
      },
      "tensors": {
        "weights": "model:model.safetensors"
      }
    }
  ]
}