---
license: other
license_name: confucius4-r2t2-model-license
license_link: https://github.com/netease-youdao/Confucius4-R2T2/blob/main/MODEL_LICENSE
tags:
- mlx
- speech-to-text
- asr
- stt
- streaming
- mlx-audio
library_name: mlx-audio
base_model: netease-youdao/Confucius4-R2T2
---

# Confucius4-R2T2, MLX 4-bit

[`netease-youdao/Confucius4-R2T2`](https://huggingface.co/netease-youdao/Confucius4-R2T2)
converted to MLX and quantised to 4 bits (group size 64, affine), for Apple
Silicon. 4.09 GB of bfloat16 becomes 1.5 GB.

Converted with `mlx-audio` 0.3.1:

```bash
python -m mlx_audio.convert --hf-path netease-youdao/Confucius4-R2T2 \
    --mlx-path Confucius4-R2T2-mlx-4bit \
    -q --q-group-size 64 --q-bits 4 --model-domain stt
```

The architecture is unchanged — `Qwen3ASRForConditionalGeneration`, the same one
`Qwen/Qwen3-ASR-1.7B` uses — so it loads through existing Qwen3-ASR paths in
both `mlx-audio` and `mlx-audio-swift` with no custom code.

## Use

```python
from mlx_audio.stt.utils import load_model, load_audio
model = load_model("selcukkubur/Confucius4-R2T2-mlx-4bit")
print(model.generate(load_audio("audio.wav")).text)
```

## Notice

Any modifications made to the original model in this Derivative Work are not
endorsed, warranted, or guaranteed by the original right-holder of the original
model, and the original right-holder disclaims all liability related to this
Derivative Work.

This is a quantisation of NetEase Youdao's Confucius4-R2T2 and is governed by
the original [MODEL_LICENSE](https://github.com/netease-youdao/Confucius4-R2T2/blob/main/MODEL_LICENSE).
That licence is royalty-free for most users but requires a separate licence from
NetEase Youdao above 100 million monthly active users or RMB 1 billion in annual
revenue, and prohibits use in the high-risk scenarios it lists. Read it before
use.