Download Latest Version v1.8.1 - Critical Bitsandbytes Fix source code.tar.gz (100.8 kB)
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README.md 2025-10-01 2.1 kB
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v1.8.0 - Quantized 8-Bit Model _ Dynamic 8-Bit Quantization source code.tar.gz 2025-10-01 100.6 kB
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v1.8.0 - Quantized 8-Bit Model _ Dynamic 8-Bit Quantization source code.zip 2025-10-01 125.0 kB
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🎉 Quantized 8-Bit Model Release

  • New Model: VibeVoice-Large-Q8 - Perfect quality with 40% less VRAM
  • Dynamic 8-Bit: Added 8-bit option for on-the-fly quantization

📦 VibeVoice-Large-Q8

Download

Key Innovation

  • Perfect Audio Quality: Identical to full precision - zero degradation
  • Selective Quantization: Audio-critical components remain at full precision
  • Diffusion head ✓ Full precision
  • VAE ✓ Full precision
  • Connectors ✓ Full precision
  • LLM ✓ 8-bit quantized

🔧 Dynamic 8-Bit Quantization

Enhanced quantize_llm Parameter

Now supports three options: - full precision (default) - Original quality - 8bit (NEW) - Balanced quality/VRAM - 4bit - Maximum VRAM savings

Smart Component Selection

8-bit mode intelligently skips: - Diffusion head - Acoustic/semantic connectors
- Tokenizers - All audio-processing components

💾 VRAM Comparison

Model/Mode VRAM Usage Quality
VibeVoice-Large ~20GB Perfect
VibeVoice-Large-Q8 ~12GB Perfect
Dynamic 8-bit ~13-14GB Excellent
Dynamic 4-bit ~10-11GB Very Good
VibeVoice-Large-Q4 ~8GB Good

🎯 Perfect For

  • RTX 3060 (12GB): Run VibeVoice-Large-Q8 with perfect quality
  • RTX 4070 Ti (12GB): Full model without compromises
  • RTX 3050 (8GB): Use VibeVoice-Large-Q4 or dynamic 4-bit
  • Production: Best quality-to-VRAM ratio with Q8
  • Development: Fast iteration with dynamic quantization

⚙️ Requirements

For dynamic quantization: - NVIDIA CUDA GPU - bitsandbytes library - Falls back to full precision on CPU/MPS

💾 Installation

Install via ComfyUI Manager or manually:

:::bash
git clone https://github.com/Enemyx-net/VibeVoice-ComfyUI
Source: README.md, updated 2025-10-01