# Third-party model notices

The standalone GGUF embeds weights from the following auxiliary models. Their license materials are
distributed in `THIRD_PARTY_LICENSES/`; repository and revision identify the exact source used or
the model family whose license applies.

| Component | Immutable source | Declared license | Included file |
|---|---|---|---|
| Wav2Vec2-BERT 2.0 | `facebook/w2v-bert-2.0@da985ba0987f70aaeb84a80f2851cfac8c697a7b` | MIT | `W2V-BERT-2.0-MIT.txt` |
| CAMPPlus | `funasr/campplus@e4b6ede7ce16997aff4ae69fbca1f0175e2afede` | Apache-2.0 | `CAMPPlus-Apache-2.0.txt` |
| BigVGAN | `nvidia/bigvgan_v2_22khz_80band_256x@633ff708ed5b74903e86ff1298cf4a98e921c513` | MIT | `BigVGAN-MIT.txt` |
| Qwen emotion model | Qwen3 family; license copied from `Qwen/Qwen3-0.6B@c1899de289a04d12100db370d81485cdf75e47ca` | Apache-2.0 | `Qwen3-Apache-2.0.txt` |
| MaskGCT/Amphion semantic-codec lineage | `open-mmlab/Amphion@26f6883110181f1dbfe95c70a7c7dbaf4de5f42a` | MIT | `Amphion-MIT.txt` |

The Wav2Vec2-BERT and CAMPPlus Hugging Face repositories declare their licenses in immutable model
cards but publish no standalone license file. The corresponding complete MIT and Apache-2.0 texts
are included here; the Wav2Vec2-BERT MIT text is taken from Meta's immutable
`facebookresearch/fairseq@3d262bb25690e4eb2e7d3c1309b1e9c406ca4b99` license, and the
Apache-2.0 text is the standard license text. BigVGAN and Qwen files are copied from their immutable
model revisions; Amphion's file is copied from its immutable source revision.

These notices do not replace the bilibili Model Use License governing IndexTTS 2.5 and this
derivative. They are additional obligations for embedded third-party components and are not legal
advice.