ComfyUI Native HiDream-O1-Image Workflow Example

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Model Versions

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HiDream-O1-Image Full Workflow

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1. Download Workflow

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2. Download Models

• hidream_o1_image_fp8_scaled.safetensors — FP8, uses fp8/mxfp8 matmuls on safe MLP layers for speedup on supported hardware
• hidream_o1_image_mxfp8.safetensors — MXFP8 quantized variant
• hidream_o1_image_bf16.safetensors — Full bf16 precision (largest)

• gemma4_e4b_it_fp8_scaled.safetensors

• hidream_o1_dev_lora_rank_64_bf16.safetensors — Full rank
• hidream_o1_dev_lora_rank_64_bf16_pruned_v1.safetensors — Pruned variant
• hidream_o1_image_dev_2604_lora_avg_rankg_224_bf16.safetensors — Alternative checkpoint-based distillation

📂 ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   ├── hidream_o1_image_fp8_scaled.safetensors
│   │   ├── hidream_o1_image_mxfp8.safetensors
│   │   └── hidream_o1_image_bf16.safetensors
│   ├── 📂 loras/
│   │   └── hidream_o1_dev_lora_rank_64_bf16.safetensors
│   └── 📂 text_encoders/
│       └── gemma4_e4b_it_fp8_scaled.safetensors

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3. Using the Workflow

• Make sure CheckpointLoaderSimple loads your chosen checkpoint
• Enter your prompt in the CLIPTextEncode node
• Text-to-Image mode: set the “Switch to Image Edit” toggle to off (default). The sampler will use your text prompt directly.
• Image Edit mode: set “Switch to Image Edit” to on, then upload a reference image in the Load Image node and connect it to HiDreamO1ReferenceImages.

Note: The O1 sampler outputs latent samples that need to be decoded through a VAEDecode node using the VAE loaded by CheckpointLoaderSimple.

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HiDream-O1-Image Dev Workflow

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1. Download Workflow

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2. Download Models

• hidream_o1_image_dev_fp8_scaled.safetensors — FP8, uses fp8/mxfp8 matmuls on safe MLP layers for speedup on supported hardware
• hidream_o1_image_dev_mxfp8.safetensors — MXFP8 quantized variant
• hidream_o1_image_dev_bf16.safetensors — Full bf16 precision (largest)

• gemma4_e4b_it_fp8_scaled.safetensors

📂 ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   ├── hidream_o1_image_dev_fp8_scaled.safetensors
│   │   ├── hidream_o1_image_dev_mxfp8.safetensors
│   │   └── hidream_o1_image_dev_bf16.safetensors
│   └── 📂 text_encoders/
│       └── gemma4_e4b_it_fp8_scaled.safetensors

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3. Using the Workflow

• Make sure CheckpointLoaderSimple loads hidream_o1_image_dev_fp8_scaled.safetensors
• The Dev version uses 28 steps with CFG=1.0 — no negative prompt needed
• Text-to-Image mode: set the “Switch to Image Edit” toggle to off (default)
• Image Edit mode: set “Switch to Image Edit” to on, upload a reference image in Load Image, and connect it to HiDreamO1ReferenceImages

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Additional Notes

• Long Text Rendering: HiDream-O1-Image excels at rendering text within images. Specify text content, font style, color, and positioning in your prompt for best results.
• Image Scaling: If your input reference image is too large, enable the ImageScaleToTotalPixels node (Ctrl+B) to scale it to 4MP.
• Patch Seam Smoothing (Experimental): The HiDreamO1PatchSeamSmoothing node reduces visible seam artifacts during sampling. Enabled by default in the Full workflow.