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Qwen3-TTS-12Hz-1.7B-Base-MLX-bf16
aufklarer/Qwen3-TTS-12Hz-1.7B-Base-MLX-bf16
Qwen3-TTS-12Hz-1.7B-Base-MLX-bf16 is a text-to-speech model from aufklarer. Use it when you need text read aloud. It is set up for mlx. The card lists the license as apache-2.0.
Full-precision bf16 (non-quantized) MLX conversion of Qwen/Qwen3-TTS-12Hz-1.7B-Base for Apple Silicon inference — the highest-quality 1.7B variant.
All-time downloads
962
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1.9B
3.9 GB on disk
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At a glance
- Task
- Text-to-Speech
- Library
- mlx
- License
- apache-2.0
- Model type
- qwen3_tts
- Access
- Public
- Created
- Jun 20, 2026
- Updated
- Jun 21, 2026
- SHA
- b8d15561
Base models
Model card
From the Hugging Face model README
Qwen3 TTS 12Hz 1.7B Base — MLX bf16
Full-precision bf16 (non-quantized) MLX conversion of Qwen/Qwen3-TTS-12Hz-1.7B-Base for Apple Silicon inference — the highest-quality 1.7B variant.
Usage
Used by speech-swift Qwen3TTS module:
let model = try await Qwen3TTSModel.fromPretrained(
modelId: "aufklarer/Qwen3-TTS-12Hz-1.7B-Base-MLX-bf16"
)
let audio = try model.synthesize("Hello, world!")
audio speak "Hello, world!" --model 1.7b -o output.wav
Model Details
- Architecture: Qwen3-TTS (Talker transformer + Code Predictor + speech tokenizer decoder)
- Parameters: 1.7B
- Precision: bf16 / fp16 — no quantization (plain
Linearweights) - Size: ~3.7 GB
- Sample rate: 24 kHz
- Codec rate: 12.5 Hz
Performance
Apple Silicon (M-series), MLX, 1.7B variants:
| Precision | RTF | Peak RAM | Notes |
|---|---|---|---|
| 8-bit | 0.39 | 2.8 GiB | good |
| bf16 | 0.48 | 4.1 GiB | best quality |
Round-trip WER (synthesize → Qwen3-ASR transcribe → WER), 15 sentences: 7.05 % (TTS + ASR round-trip; 0 synthesis failures).
Variants
| Variant | Precision | Size | Model ID |
|---|---|---|---|
| 0.6B 8-bit | 8-bit | ~1.3 GB | aufklarer/Qwen3-TTS-12Hz-0.6B-Base-MLX-8bit |
| 1.7B 8-bit | 8-bit | ~2.8 GB | aufklarer/Qwen3-TTS-12Hz-1.7B-Base-MLX-8bit |
| 1.7B bf16 | bf16 | ~3.7 GB | aufklarer/Qwen3-TTS-12Hz-1.7B-Base-MLX-bf16 |
- Guide: soniqo.audio/guides/speak
- Docs: soniqo.audio
- GitHub: soniqo/speech-swift
- Task
- Text-to-Speech
- Library
- mlx
- Type
- qwen3_tts
- License
- apache-2.0
- Languages
- en, zh, ja, ko, fr, de
- Created
- Jun 20, 2026
- Updated
- Jun 21, 2026