| # NOTICE — Third-Party Model Attribution | |
| This repository contains mirrors of open-source AI models and support files | |
| used by the ChatBack Android app. All models run 100% on-device. | |
| --- | |
| ## Gemma 3 1B-IT | |
| - **Author:** Google | |
| - **License:** Gemma Terms of Use (see LICENSE-gemma) | |
| - **Format:** LiteRT `.task` (INT4 quantised) | |
| - **Original:** https://huggingface.co/0x3/gemma3-1b-it-int4.task | |
| - **Converted by:** 0x3 (community) | |
| - **Used for:** All chatroom AI features + AI Chat fallback | |
| ## Gemma 4 E2B-IT | |
| - **Author:** Google | |
| - **License:** Gemma Terms of Use (see LICENSE-gemma) | |
| - **Format:** LiteRT `.litertlm` | |
| - **Original:** https://huggingface.co/google/gemma-4-e2b-it | |
| - **Used for:** Optional AI Chat upgrade (best quality) | |
| ## Gemma 4 E2B-IT Abliterated | |
| - **Author:** Google (model); abliteration by community | |
| - **License:** Gemma Terms of Use (see LICENSE-gemma) | |
| - **Format:** LiteRT `.litertlm` | |
| - **Used for:** Optional AI Chat upgrade — NSFW/uncensored variant | |
| - **Note:** Safety alignment removed. Only accessible when NSFW mode is enabled. | |
| ## Piper TTS voices (Amy, Lessac, LibriTTS-R, Ryan, Joe) | |
| - **Author:** rhasspy / Piper contributors | |
| - **License:** MIT (see LICENSE-piper) | |
| - **Original:** https://huggingface.co/rhasspy/piper-voices | |
| - American English medium-quality VITS ONNX models | |
| ## Kokoro TTS English v1.0 (q8f16 ONNX) | |
| - **Author:** Kokoro TTS project (hexgrad); ONNX export by onnx-community | |
| - **License:** Apache 2.0 (see LICENSE-kokoro) | |
| - **Original model:** https://huggingface.co/onnx-community/Kokoro-82M-v1.0-ONNX | |
| - 28 English voices (American & British, female & male) | |
| - Mixed int8-weight / float16-activation quantization for better quality than pure int8 | |
| - `voices.bin` + `tokens.txt` from csukuangfj/sherpa-onnx-kokoro-multi-lang-v1_0 (compatible format) | |
| - espeak-ng data NOT included — app uses its own Java IPA phonemizer | |
| ## Sherpa-ONNX | |
| - **Author:** k2-fsa / Next-gen Kaldi | |
| - **License:** Apache 2.0 (see LICENSE-sherpa-onnx) | |
| - **Original:** https://github.com/k2-fsa/sherpa-onnx | |
| - Provides voices.bin and tokens.txt format used by the app | |