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    Flux.2 Klein Mix Workflow. Consistency, Enhanced, Image Size control, I2I, T2I, In & outpaint, ControlNets. - v1.0
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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.

    There is no Negative Prompt as is not officially supported, and even if it works with the Base model (but still no official support) it does not work well enough, write a better positive prompt instead.


    V4 is again a quire big change with a new layout and reworked settings. Trying to make it easier to pick image sizes and giving more control to the user. If you have used V3 before you need 3 new Custom Nodes (The last 3 in the list below), none of them have requirements so should be easy and safe to install. You can see a list of changes to the right.

    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

    FAQ

    Comments (11)

    AxxxxoMar 15, 2026
    CivitAI

    "Mode Select " Node - Option is showing "disconnected"

    How to fix it ?

    Where to download the v2.1 ?

    Whistler42
    Author
    Mar 17, 2026

    Inside the Mode Select Subgraph there is a node called int that is just a number. If it says disconnected you have deleted that node.

    2.1 has replaced 2.0 as it had one broken function so I didn't leave it up. So just download v2 again.

    yajukunMar 22, 2026

    Yeah, I have the same issue showing disconnected for both versions. I did not delete any nodes. Oh well.

    Whistler42
    Author
    Mar 29, 2026· 1 reaction

    Then the problem is that you do not have the custom node for the integer value inside the sub graph. I will try and make a new version with less needed custom nodes. The workflow has way too many now, should be alternatives that I can use.

    quanticalcapybara886Mar 21, 2026
    CivitAI

    This workflow is perfect, I really LOVE IT. So first BIG THANKS TO YOU. I can use it with comfy 3.16. But... I've updated today (2026 3rd march) and It doesn't work anymore. By chance I still have my 3.16. I manually reinstalled every customs node but nothing happens. I mean, the workflow return no error and runs super fast and gives nothing. I'm investigated.

    Whistler42
    Author
    Mar 29, 2026

    Thanks, I think everything works for me still on the latest version but my whole comfy installation is messed up from updates with errors everywhere. So I'm working on making several smaller comfy installations that can do specific things. Also want to make this workflow require less custom nodes so will try and get things better then and easier to run then.

    Well. Something very strange happen. When I run the workflow for the first time, it runs well, and next times it doesnt. When I save it it doesnt want to load. It's very suspicious

    Whistler42
    Author
    Mar 31, 2026· 1 reaction

    @quanticalcapybara886 Hard to say what is wrong if you do not have a error message. If you installed other custom nodes later maybe they messed things up? You can type pip check to inside your ComfyUI python environment to check for broken requirements. You could also try downloading the workflow again I guess. I have seen sub-graphs acting weird with newer ComfyUI version but I deliberately made changes for that so they at least seem to work for me now. I'm using ComfyUI v0.18.2 with Python 3.12.12

    @Whistler42 Thanks for your reply, it works fine with 0.18.2.

    MIkeVolgaMar 28, 2026
    CivitAI

    неработающая херня! версии 2.1 в архиве на 28.03. нет ) Не тратте время

    Whistler42
    Author
    Mar 30, 2026
    Архив версии 2.0 — это версия 2.1, я забыл его переименовать. Он не работает, если у вас не установлены правильные пользовательские узлы, плюс, как мне кажется, недавние обновления ComfyUI ухудшили некоторые вещи. Я согласен, что установка всех пользовательских узлов была слишком сложной, я попытался исправить это в версии 3.0, заменив все узлы, для которых я смог найти более распространенные или простые в установке, сохранив при этом функциональность.

    Workflows
    Flux.2 Klein 9B

    Details

    Downloads
    140
    Platform
    CivitAI
    Platform Status
    Available
    Created
    3/11/2026
    Updated
    5/3/2026
    Deleted
    -