CivArchive
    FLUX2 Klein_9b Pro Grade Workflow (High & Low VRAM), w/ Controlnet, GGUF capable - v1.0
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    This is an advanced workflow designed for people familar with Comfyui and who want pro grade results. I encourage you to learn it, but if it is overwhelming, the simple version can be found HERE

    A complete user and troubleshooting guide inclusing a list of common error messages can be found here https://civarchive.com/articles/24678/how-to-use-my-workflows-a-comprehensive-breakdown

    Each Flux model has it's own combination of text encoders. Read the notes carefully. You will get MATT errors of it is incorrect.

    也有中文说明

    Ver 6.0

    • Controlnet/ Image reference area, gut & rebuild:

      • you can now set the image ratio based on your original image. Huge timesaver for Controlnet & I2I

      • Base image 🖼️ controls everything, so no need to set multiple images

      • You can even use it as a color reference in post processing

    • Better Prompt generator (Florence)

    • Huge update to detailers. I basically yanked them out and replaced them with my V5 units.

      • You an use Flux or use an SDXL based model to detail. Just switch it.

    • Updated 🎨 post production suite that includes realism enhancers and an inline crop tool

    • Updated the main area

    • Huge update to 🗒️notes.

    Ver 5.0

    • Added controlnet

    • Added a sentence remover to prevent CivitAi Flags

    Ver 4.0

    • Total overhaul

    • Optimized for Klein_9b

    • Options to control the scheduler

    • Upgraded detailers

    • Upgraded Post Production Suite

      • 📷 Optical Realism upgrade

      • Arcane Bloom FX

      • LensFX

      • ClarityFX

      • 也有中文说明

    Flux 2D I2I, T2I, Upscaler, Detailers, and a hefty Post Production Suite

    • Optimized for Klein as well as Flux 2D

      • Include the Klein Enhancer (Similar to a detail daemon) to improve the quality of the Quant images

    • Prompt Assist

    • Allows up to 10 images to be loaded for reference

    • Ultimate Upscaler package

    • Seed VR2 Upscaler

    • Face, Hand, Eye, and Expression Detailers

    • Add lighting, color correction , and specicl effects after generation in the Post Production Suite

    Flux 2D Base Model

    Flux 2 Klein Model & Text encoder

    Klein 4b

    Klein 9b

    VAE (for both)

    Instagram: https://www.instagram.com/synth.studio.models/

    Buy me a☕ https://ko-fi.com/lonecatone

    This represents hundreds of hours of work that I give away for free. If you enjoy it, Please make sure to 👍like and post to my workflows. That is how you support me. Also, feel free to ⚡tip 😉

    Description

    FAQ

    Comments (6)

    BurritoHellDec 25, 2025
    CivitAI

    error

    SamplerCustomAdvanced

    mat1 and mat2 shapes cannot be multiplied (512x3584 and 15360x6144)

    lonecatone23
    Author
    Dec 25, 2025· 1 reaction

    You have controlnet settings wrong. The correction for it is the first note under troubleshooting

    BurritoHellDec 26, 2025

    @lonecatone23 Thanks you for let me know, for some reason it work just fine with the full model the problem it is with the gguf model.

    lonecatone23
    Author
    Dec 26, 2025· 1 reaction

    @BurritoHell well that's interesting 🤔. I'll look into that

    lonecatone23
    Author
    Jan 16, 2026· 1 reaction

    @BurritoHell Dunno if I got back to you on this, but I had to redo the way the detailers worked. This should now work on all models, including teh Klein one

    BurritoHellApr 16, 2026

    @lonecatone23 Oh my goodness, thank you for the reply. I was out planning for various events and personal matters. I'm back on the AI test market and will check out the latest versions:D

    Workflows
    Flux.2 D

    Details

    Downloads
    242
    Platform
    CivitAI
    Platform Status
    Available
    Created
    12/11/2025
    Updated
    8/3/2026
    Deleted
    -