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Make sure your ComfyUI is updated.Workflows in this guide can be found in the Workflow Templates. If you canโ€™t find them in the template, your ComfyUI may be outdated.If nodes are missing when loading a workflow, possible reasons:
  1. You are not using the latest ComfyUI version (Nightly version)
  2. Some nodes failed to import at startup
HiDream-O1-Image Demo HiDream-O1-Image is a unified image generative foundation model open-sourced by HiDream-ai on May 8, 2026. Built on a Pixel-level Unified Transformer (UiT), it operates without external VAEs or disjoint text encoders, supporting text-to-image, instruction-based image editing, subject-driven personalization, and storyboard generation at up to 2,048 ร— 2,048 resolution. HiDream-O1-Image is released under the MIT License and natively supported in ComfyUI (PR #13817). HiDream-O1-Image - GitHub

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Model Versions

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HiDream-O1-Image Full Workflow

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HiDream O1 Full: Image generation

Input a text prompt and optionally upload reference images. Generate a high-resolution image up to 2048x2048 with text-to-image, editing, or subject-driven personalization. HiDream O1 Full workflow preview

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search โ€œHiDream O1 Fullโ€ in Template Library
Example output HiDream O1 Full example output

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1. Download Workflow

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2. Download Models

Checkpoint: re-packaged and quantized. All use bf16 for worst outliers, unused deepstack layers removed: Text Encoder (prompt enhancement): shared across all versions: LoRA (optional): the Dev distillation can also be applied to the Full model as a LoRA, allowing you to adjust the distillation strength (by Kijai):

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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 โ€œSwitch to Image Editโ€ toggle to off (default). The sampler will use your text prompt directly.
  • Image Edit mode: set โ€œSwitch to Image Editโ€ 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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HiDream O1 Dev

Input a text prompt and optional reference images. Generate a high-resolution image (up to 2048x2048) with support for text-to-image, image editing, and subject-driven personalization. HiDream O1 Dev workflow preview

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search โ€œHiDream O1 Devโ€ in Template Library
Input materials Upload this file to the matching LoadImage node:

noir_portrait.png

LoadImage node 213 ยท noir_portrait.png
noir_portrait.png
Example output
Input imageHiDream O1 Dev example output

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1. Download Workflow

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2. Download Models

Checkpoint (Dev): re-packaged and quantized. All use bf16 for worst outliers, unused deepstack layers removed: Text Encoder (prompt enhancement): shared across all versions:

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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 โ€œSwitch to Image Editโ€ toggle to off (default)
  • Image Edit mode: set โ€œSwitch to Image Editโ€ 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. Long-Text Rendering & Layout Control
  • 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.