MIT License

Copyright (c) 2025 Shmuel Ronen

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Third-Party Model Licenses
──────────────────────────

The project code is MIT. Model weights carry their own licenses:

  ────────────────  ─────────────────────────────────────────  ──────────────
  Engine            License                                    Commercial Use
  ────────────────  ─────────────────────────────────────────  ──────────────
  F5-TTS            CC-BY-NC-4.0                               No            
  ChatterBox        MIT                                        Yes           
  ChatterBox 23L    MIT                                        Yes           
  VibeVoice         MIT (research-only per model card)         No            
  Higgs Audio 2     Boson Higgs Audio 2 Community License      Conditional   
  IndexTTS-2        bilibili Model Use License                 Conditional   
  CosyVoice3        Apache-2.0                                 Yes           
  Qwen3-TTS         Apache-2.0                                 Yes           
  Granite ASR       Apache-2.0                                 Yes           
  Step Audio EditX  Apache-2.0 (verify before commercial use)  Conditional   
  Echo-TTS          CC-BY-NC-SA-4.0                            No            
  RVC               MIT (framework); community models vary     Varies        
  ────────────────  ─────────────────────────────────────────  ──────────────

Users are responsible for complying with respective model licenses.
