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This guide shows how to run the Flux 1.1 Pro Ultra Image workflows in ComfyUI. For what the model is and what it does best, see the Flux 1.1 Pro Ultra Image overview.
To use the Partner Nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the Partner Nodes Overview section of the documentation to understand the specific requirements for using the Partner Nodes.
Make sure your ComfyUI is updated.Workflows in this guide can be found in the Workflow Templates. If you can’t find them in the template, your ComfyUI may be outdated.If nodes are missing when loading a workflow, possible reasons: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

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Flux 1.1 Pro Ultra Image Node Documentation

Check the following documentation for detailed node parameter settings:

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Flux 1.1 [pro] Text-to-Image Tutorial

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1. Download Workflow File

Download and drag the following file into ComfyUI to load the workflow: Flux 1.1 pro Text-to-Image Workflow

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2. Complete the Workflow Steps

Workflow Steps Follow the numbered steps to complete the basic workflow:
  1. (Optional) Modify the prompt in the Flux 1.1 [pro] Ultra Image node
  2. (Optional) Set raw parameter to false for more realistic output
  3. Click Run or use shortcut Ctrl(cmd) + Enter to generate the image
  4. After the API returns results, view the generated image in the Save Image node. Images are saved to the ComfyUI/output/ directory

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Flux 1.1[pro] Image-to-Image Tutorial

When adding an image_prompt to the node input, the output will blend features from the input image (Remix). The image_prompt_strength value affects the blend ratio: higher values make the output more similar to the input image.

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1. Download Workflow File

Download and drag the following file into ComfyUI, or right-click the purple node in the Text-to-Image workflow and set mode to always to enable image_prompt input: Flux 1.1 pro Image-to-Image Remix We’ll use this image as input: Input Image

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2. Complete the Workflow Steps

Workflow Steps Follow these numbered steps:
  1. Click Upload on the Load Image node to upload your input image
  2. (Optional) Adjust image_prompt_strength in Flux 1.1 [pro] Ultra Image to change the blend ratio
  3. Click Run or use shortcut Ctrl(cmd) + Enter to generate the image
  4. After the API returns results, view the generated image in the Save Image node. Images are saved to the ComfyUI/output/ directory
Here’s a comparison of outputs with different image_prompt_strength values: Comparison