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    Flux.2 Klein Mix Workflow. Consistency, Enhanced, Image Size control, I2I, T2I, In & outpaint, ControlNets. - v5.0
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    Flux.2 Klein Mix Workflow

    Workflow with main focus on Image Editing, with control over Image Sizes. Trying to only use the more common Custom Nodes or ones that do not have requirements for a easy and safe installation.
    Aiming for consistency and support edits for up to 4 images and Text to Image, 3 different Controlnets, different Inpainting methods and Outpainting. Nodes for selecting image sizes and Aspect Ratio. Uses Flux2 Klein Enhancer nodes, for consistency and prompt impact. Color matching and different sampler with ETA setting.
    The workflow has many notes that explain things inside, which you can read or delete.

    There is a second Version inside for people that use Lora Manager so you can pick what you want.

    The workflow only support a Positive Prompt except for the 2-pass mode in V5 for T2I that uses both the Base and the Normal model and a negative prompt.

    All custom nodes used:
    Essentials
    Rgthree
    Easy-Use
    Impact Pack
    KjNodes
    GGUF
    Controlnet_aux
    LayerStyle
    ArtVenture

    Below Does not have any requirements making for an easier and safer install:
    Inpaint-CropAndStitch
    ModdedNodes
    Comfyroll
    ControlAltAI
    Flux2Klein-Enhancer
    CRZnodes
    mxToolkit
    ZImageTurbo-FlowSampler



    Note that V2 and V1 do not use the same custom nodes, and are harder to use because of that, and I do not recommend using them!

    Feel free to criticize, comment or ask questions.

    Description

    Added a new 2-pass mode for T2I that uses both Base and the Normal models.

    Added support for the new versions of the Enhancer nodes.

    FAQ

    Comments (8)

    quanticalcapybara886May 10, 2026
    CivitAI

    Guys, if the workflows do not run, I noticed a problem with custom_nodes\comfyui-art-venture ! try a manual download (git clone and install requirement). If it still not working try sipherxyz version on github.

    makemoney676May 11, 2026
    CivitAI

    Image generation is being prevented because, for some reason, the "ImageOutput" of "Z-Image Turbo Sampler" is connected to the sampler within "Generation Settings".

    Is this a mistake by the author? Or is there something wrong with my environment?

    Whistler42
    Author
    May 11, 2026· 1 reaction

    Not a mistake, it works for Flux.2 Klein also and has a sampler and options that I wanted to add that give imo a little better results.

    So no that is not the error. When you have not given a error message from the Console / log I can not say what is wrong but probably some custom node you do not have installed?

    makemoney676May 13, 2026

    I figured it out myself. It turns out that installing “tpc2233/ComfyUI-Z-Image-Turbo” had caused “Z-Image Flow Sampler” to be converted into something else. Sorry for the fuss.

    eleksarMay 31, 2026
    CivitAI

    Tested V5 and can't get it working. It generates three black images within a second. No error output. Using GGUF.

    Whistler42
    Author
    Jun 1, 2026

    The previews should be black if you have not set a mode to use them. But the compare and save image you should always see. Have you looked in the console there should be something there why it is not working. But if you are sure you are using the correct model and have set the workflow to use GGUF it is probably some custom node you are missing, some some conflict with a custom node. You can write 'pip check' in a console window to check for broken requirements. If you are using portable version you need to be inside the virtual environment first though. Or the manager inside Comfyui can sometimes also see those things.

    Aralkar1Jun 3, 2026
    CivitAI

    I am not able to generate image. got prompt

    Failed to validate prompt for output 1203:

    * DF_Divide 2710:2685:

    - Exception when validating inner node: list index out of range

    * DF_Multiply 2710:2700:

    - Exception when validating inner node: list index out of range

    Output will be ignored

    invalid prompt: {'type': 'prompt_outputs_failed_validation', 'message': 'Prompt outputs failed validation', 'details': '', 'extra_info': {}}

    Whistler42
    Author
    Jun 10, 2026

    My guess is that you have some custom node that is not updated. Or there is some conflict. I personally run portable Comyui and have several different ones as adding too many custom nodes usually breaks stuff. If updates broke it I can make a new version but do not have time currently. Will check it later.

    Workflows
    Flux.2 Klein 9B

    Details

    Downloads
    1,373
    Platform
    CivitAI
    Platform Status
    Available
    Created
    5/8/2026
    Updated
    8/21/2026
    Deleted
    -

    Files

    flux2KleinMixWorkflowConsistency_v50.zip