Kromoss GGUF
This repository contains GGUF quantizations of Kromoss, a full fine-tune of MOSS-Image-Base at 1024 px. Kromoss uses the same architecture, text encoder and VAE as MOSS-Image-SFT, so it drops into the MOSS-Image workflows. The upstream model and conversion are based on the OpenMOSS release, which is licensed under Apache-2.0.
Quantizations
File sizes are shown in GiB. Standard quants use common GGML formats. Proprietary quants use custom ConvRot formats supported by the comfyui-gguf-reboot loader nodes.
| Quant | Format | Size | File |
|---|---|---|---|
| Q4_K_M | Standard GGUF | 3.35 GiB | kromoss-Q4_K_M.gguf |
| Q6_K | Standard GGUF | 4.24 GiB | kromoss-Q6_K.gguf |
| Q8_0 | Standard GGUF | 5.31 GiB | kromoss-Q8_0.gguf |
| Q8_CR | Proprietary, comfyui-gguf-reboot |
5.04 GiB | kromoss-Q8_CR.gguf |
| Q4_CR_L | Proprietary, comfyui-gguf-reboot |
3.56 GiB | kromoss-Q4_CR_L.gguf |
Standard GGUF files can be loaded with compatible GGUF tools. Q8_CR and Q4_CR_L use custom quantization layouts and require the comfyui-gguf-reboot loader nodes. They are not compatible with general-purpose GGUF loaders.
ComfyUI setup
Install comfyui-gguf-reboot. Use its UnetLoaderGGUFDynamicVRAM node to load a GGUF from models/diffusion_models/. These loader nodes give the best performance.
The workflow also needs the following upstream files:
| Component | File | ComfyUI folder |
|---|---|---|
| Text encoder | qwen3.5_9b_w4a8_gptq.safetensors | models/text_encoders/ |
| VAE | flux2-vae_small.safetensors | models/vae/ |
Download the Kromoss ComfyUI workflow.
Sampling settings
The supplied workflow uses the official Kromoss reference settings: 50 steps, CFG 3, euler sampler, sgm_uniform scheduler, and skip layer guidance on layer 22.
Inputs and outputs
Kromoss accepts natural-language prompts, tag sequences, and JSON layouts that specify text and object placement. It generates a still image. The upstream pipeline requires image dimensions that are multiples of 16.
The upstream repository also ships 8-step turbo LoRAs: lodestones/Kromoss.
License and attribution
The upstream Kromoss model is released under the Apache License 2.0. See the upstream model card and the OpenMOSS project for model details.
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