Qwen3-VL Text Encoders — INT8
INT8 quantized versions of the Qwen3-VL text encoders, for use in ComfyUI workflows (Boogu, Ideogram 4, and others that use Qwen3-VL as a text encoder).
Files
| File | Source | ConvRot Group Size | Notes |
|---|---|---|---|
qwen3vl_4b_int8_convrot.safetensors |
true bf16 | 256 | Best quality, full-strength ConvRot |
qwen3vl_8b_int8_convrot.safetensors |
true bf16 | 16 | One intermediate dim (4304) limits group size |
qwen3vl_8b_int8_v2.safetensors |
true bf16 | — (no ConvRot) | Plain tensor-wise INT8 |
All quantized with silveroxides/convert_to_quant, --int8 --scaling_mode tensor --simple, embedding/lm_head/norm layers excluded and kept in BF16.
Important Note
⚠️ Do not use a text encoder requantized from an already-FP8-quantized source (FP8 → INT8). Double quantization causes visible color/saturation drift, especially noticeable on few-step distilled models like Boogu Turbo. These files were quantized directly from true BF16 source weights (Comfy-Org/Qwen3-VL), avoiding that issue entirely.
Usage
Load via the standard Load CLIP node in ComfyUI, paired with the matching diffusion model (Boogu, Ideogram 4, etc.). Native INT8 support is available in recent ComfyUI builds; older builds need an INT8-compatible custom node.
Credits
- Base model: Comfy-Org/Qwen3-VL
- Quantization tooling: silveroxides/convert_to_quant
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