{
  "family": "omnivoice",
  "display_name": "OmniVoice",
  "description": "Massively multilingual zero-shot TTS model from k2-fsa for 600+ languages, supporting short-reference voice cloning, attribute-based voice design, pronunciation controls, and nonverbal tags.",
  "category": "tts",
  "status": "supported",
  "tasks": [
    "tts",
    "clone",
    "design"
  ],
  "modes": [
    "offline",
    "streaming"
  ],
  "languages": [
    "600+ languages"
  ],
  "capabilities": {
    "clone": [
      "speaker_reference"
    ],
    "design": [
      "voice_design"
    ]
  },
  "options": {
    "request": [
      {
        "name": "language",
        "type": "string",
        "description": "Synthesis language code or label; omitted uses automatic language selection.",
        "required": false
      },
      {
        "name": "reference_text",
        "type": "string",
        "description": "Transcript for speaker reference audio used in voice cloning.",
        "required": false
      },
      {
        "name": "instruct",
        "type": "string",
        "description": "Voice-design instruction such as speaker attributes, accent, style, or delivery.",
        "required": false
      },
      {
        "name": "seed",
        "type": "int",
        "description": "Generation seed for reproducible output; omitted value keeps the session RNG state.",
        "required": false,
        "min": 0,
        "max": 4294967295
      },
      {
        "name": "num_inference_steps",
        "type": "int",
        "description": "Diffusion language-model inference steps; default 32.",
        "required": false,
        "min": 1,
        "default": 32
      },
      {
        "name": "guidance_scale",
        "type": "float",
        "description": "Classifier-free guidance scale; default 2.0.",
        "required": false,
        "default": 2
      },
      {
        "name": "speed",
        "type": "float",
        "description": "Speech speed multiplier used for target-length estimation; default 1.0.",
        "required": false,
        "default": 1
      },
      {
        "name": "duration_sec",
        "type": "float",
        "description": "Target output duration in seconds; omitted uses the model's estimated duration.",
        "required": false,
        "min": 0
      },
      {
        "name": "shift",
        "type": "float",
        "description": "Diffusion timestep schedule shift; default 0.1.",
        "required": false,
        "default": 0.1
      },
      {
        "name": "denoise",
        "type": "bool",
        "description": "Add the denoise control token when reference audio is present; default true.",
        "required": false,
        "default": true
      },
      {
        "name": "preprocess_prompt",
        "type": "bool",
        "description": "Preprocess speaker reference audio before tokenization; default true.",
        "required": false,
        "default": true
      },
      {
        "name": "postprocess_output",
        "type": "bool",
        "description": "Apply output postprocessing and trimming; default true.",
        "required": false,
        "default": true
      },
      {
        "name": "layer_penalty_factor",
        "type": "float",
        "description": "Layer-order penalty used while selecting masked audio-codebook positions; default 5.0.",
        "required": false,
        "default": 5
      },
      {
        "name": "position_temperature",
        "type": "float",
        "description": "Gumbel temperature for masked-position selection; default 5.0.",
        "required": false,
        "default": 5
      },
      {
        "name": "class_temperature",
        "type": "float",
        "description": "Audio-token class sampling temperature; default 0 for greedy class selection.",
        "required": false,
        "min": 0,
        "default": 0
      },
      {
        "name": "audio_chunk_duration_sec",
        "type": "float",
        "description": "Target chunk duration for automatic long-form splitting; default 15 seconds.",
        "required": false,
        "min": 0,
        "default": 15
      },
      {
        "name": "audio_chunk_threshold_sec",
        "type": "float",
        "description": "Estimated duration above which long-form generation is split into chunks; default 30 seconds.",
        "required": false,
        "min": 0,
        "default": 30
      },
      {
        "name": "text_chunk_size",
        "type": "int",
        "description": "Explicit long-form text chunk size in Unicode codepoints. Omitted value uses duration-based automatic chunking.",
        "required": false,
        "min": 1
      },
      {
        "name": "text_chunk_mode",
        "type": "enum",
        "description": "Text chunking mode; default tag_aware.",
        "preset": "text_chunk_mode_full",
        "required": false,
        "default": "tag_aware"
      }
    ],
    "session": [
      {
        "name": "weight_type",
        "type": "enum",
        "description": "Shared generator weight storage type; default native.",
        "preset": "weight_type_full",
        "required": false,
        "default": "native"
      },
      {
        "name": "generator_weight_type",
        "type": "enum",
        "description": "Generator weight storage type; defaults to weight_type, which defaults to native.",
        "preset": "weight_type_full",
        "required": false
      },
      {
        "name": "audio_tokenizer_weight_type",
        "type": "enum",
        "description": "Audio tokenizer weight storage type; default native.",
        "preset": "weight_type_full",
        "required": false,
        "default": "native"
      },
      {
        "name": "audio_tokenizer_codebook_weight_type",
        "type": "enum",
        "description": "Storage type for the audio tokenizer codebooks, codebook score matrix, semantic feature projection, and fc2; default f32.",
        "values": ["native", "f32", "f16", "bf16"],
        "required": false,
        "default": "f32"
      },
      {
        "name": "audio_tokenizer_graph_arena_mb",
        "type": "int",
        "description": "Audio tokenizer graph arena size in MiB; default 128.",
        "required": false,
        "min": 1,
        "default": 128
      },
      {
        "name": "generator_prefill_graph_arena_mb",
        "type": "int",
        "description": "Generator prefill graph arena size in MiB; default 256.",
        "required": false,
        "min": 1,
        "default": 256
      },
      {
        "name": "generator_decode_graph_arena_mb",
        "type": "int",
        "description": "Generator decode graph arena size in MiB; default 256.",
        "required": false,
        "min": 1,
        "default": 256
      },
      {
        "name": "audio_tokenizer_weight_context_mb",
        "type": "int",
        "description": "Audio tokenizer weight context size in MiB; default 128.",
        "required": false,
        "min": 1,
        "default": 128
      },
      {
        "name": "generator_weight_context_mb",
        "type": "int",
        "description": "Generator weight context size in MiB; default 256.",
        "required": false,
        "min": 1,
        "default": 256
      },
      {
        "name": "mem_saver",
        "type": "bool",
        "description": "Release staged runtime graphs after request phases; default false. Cannot be combined with perf_mode=flash_attention.",
        "required": false,
        "default": false
      },
      {
        "name": "perf_mode",
        "type": "enum",
        "description": "Generator performance mode; default off keeps the exact-safe attention path. flash_attention requires mem_saver=false.",
        "preset": "perf_mode_flash_attention",
        "required": false,
        "default": "off"
      }
    ],
    "load": []
  },
  "runtime": {
    "tags": [
      "gguf",
      "stream"
    ]
  },
  "ui": {
    "recommended_package": "omnivoice_q8_0",
    "tags": [
      "TTS",
      "Clone",
      "Design",
      "GGUF",
      "Stream"
    ],
    "docs": [
      "docs/models/omnivoice.md",
      "docs/tts.md",
      "docs/gguf.md"
    ]
  },
  "package_defaults": {
    "download": {
      "kind": "huggingface_snapshot",
      "repo": "audio-cpp/audio.cpp-gguf",
      "revision": "main",
      "gated": false
    }
  },
  "packages": [
    {
      "id": "omnivoice_q8_0",
      "display_name": "OmniVoice Q8_0 GGUF",
      "default": true,
      "format": "gguf",
      "precision": "q8_0",
      "target_directory": "OmniVoice-GGUF",
      "files": [
        "OmniVoice-GGUF/omnivoice-q8_0.gguf"
      ],
      "strip_prefix": "OmniVoice-GGUF"
    },
    {
      "id": "omnivoice_bf16",
      "display_name": "OmniVoice BF16 GGUF",
      "format": "gguf",
      "precision": "bf16",
      "target_directory": "OmniVoice-GGUF",
      "files": [
        "OmniVoice-GGUF/omnivoice-bf16.gguf"
      ],
      "strip_prefix": "OmniVoice-GGUF"
    },
    {
      "id": "omnivoice_f16",
      "display_name": "OmniVoice F16 GGUF",
      "format": "gguf",
      "precision": "f16",
      "target_directory": "OmniVoice-GGUF",
      "files": [
        "OmniVoice-GGUF/omnivoice-f16.gguf"
      ],
      "strip_prefix": "OmniVoice-GGUF"
    },
    {
      "id": "omnivoice_safetensors",
      "display_name": "OmniVoice Safetensors",
      "format": "safetensors",
      "precision": "native",
      "target_directory": "OmniVoice",
      "files": [
        "config.json",
        "model.safetensors",
        "tokenizer.json",
        "tokenizer_config.json",
        "audio_tokenizer/config.json",
        "audio_tokenizer/preprocessor_config.json",
        "audio_tokenizer/model.safetensors"
      ],
      "download": {
        "kind": "huggingface_snapshot",
        "repo": "k2-fsa/OmniVoice"
      }
    },
    {
      "id": "voicetut_tts_q8_0",
      "display_name": "VoiceTut-TTS Egyptian Arabic Q8_0 GGUF",
      "description": "Egyptian Arabic and Arabic-English code-switching fine-tune of OmniVoice from mohammedaly22/VoiceTut-TTS (same architecture and audio tokenizer as OmniVoice). Use language=arz.",
      "format": "gguf",
      "precision": "q8_0",
      "target_directory": "VoiceTut-TTS-GGUF",
      "files": [
        "voicetut-tts-q8_0.gguf"
      ],
      "download": {
        "kind": "huggingface_snapshot",
        "repo": "mohammedaly22/VoiceTut-TTS-GGUF"
      }
    },
    {
      "id": "voicetut_tts_f16",
      "display_name": "VoiceTut-TTS Egyptian Arabic F16 GGUF",
      "description": "Egyptian Arabic and Arabic-English code-switching fine-tune of OmniVoice from mohammedaly22/VoiceTut-TTS (same architecture and audio tokenizer as OmniVoice). Use language=arz.",
      "format": "gguf",
      "precision": "f16",
      "target_directory": "VoiceTut-TTS-GGUF",
      "files": [
        "voicetut-tts-f16.gguf"
      ],
      "download": {
        "kind": "huggingface_snapshot",
        "repo": "mohammedaly22/VoiceTut-TTS-GGUF"
      }
    }
  ],
  "sources": [
    {
      "format": "gguf",
      "roots": {
        "model": ".",
        "weights": "$gguf"
      },
      "files": {
        "config": "model:config.json",
        "tokenizer_json": "model:tokenizer.json",
        "tokenizer_config": "model:tokenizer_config.json",
        "audio_tokenizer_config": "model:audio_tokenizer/config.json",
        "audio_tokenizer_preprocessor": "model:audio_tokenizer/preprocessor_config.json"
      },
      "optional_files": {
        "chat_template": "model:chat_template.jinja"
      },
      "tensors": {
        "weights": {
          "source": "weights:",
          "prefix": "weights"
        },
        "audio_tokenizer_weights": {
          "source": "weights:",
          "prefix": "audio_tokenizer_weights"
        }
      }
    },
    {
      "format": "safetensors",
      "roots": {
        "model": "."
      },
      "files": {
        "config": "model:config.json",
        "tokenizer_json": "model:tokenizer.json",
        "tokenizer_config": "model:tokenizer_config.json",
        "audio_tokenizer_config": "model:audio_tokenizer/config.json",
        "audio_tokenizer_preprocessor": "model:audio_tokenizer/preprocessor_config.json"
      },
      "optional_files": {
        "chat_template": "model:chat_template.jinja"
      },
      "tensors": {
        "weights": "model:model.safetensors",
        "audio_tokenizer_weights": "model:audio_tokenizer/model.safetensors"
      }
    }
  ]
}