CivArchive
    FLUX2 Klein_9b Pro Grade Workflow (High & Low VRAM), w/ Controlnet, GGUF capable - V4.0 2D and Klein_9b
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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

    • Complete overhaul

    • Optimized for Klein_9b

    • You have the options to change the samplers (not common in 9b workflows)

    • Overhaul of the Post Processing Suite

      • 📷 Optical Realiam upgrade

    • Better metadata saver

    FAQ

    Comments (6)

    AshafApr 2, 2026
    CivitAI

    Do you plan to add ControlNet?

    lonecatone23
    Author
    Apr 2, 2026· 1 reaction

    I typically wouldn't on Flux2 based model. I's have to see if the model even exists and what kind it is. My other models have it.

    Fun project for this wekend. I'll keep you posted

    AshafApr 2, 2026

    @lonecatone23 I tried to integrate another workflow into yours, but it's working really badly. I'm trying to figure it out, but nothing's working. It combines reference and control net, and generates everything as a single unit. We need some kind of approach, since the reference is latent and the control net is also latent, and it's a mess.

    lonecatone23
    Author
    Apr 2, 2026

    @Ashaf message me and send me a link, or hit me up on Discord. I love a challenge

    AshafApr 2, 2026

    @lonecatone23 wrote in private messages

    lonecatone23
    Author
    Apr 3, 2026

    ask and ye shall recieve

    Workflows
    Flux.2 Klein 9B

    Details

    Downloads
    787
    Platform
    CivitAI
    Platform Status
    Available
    Created
    3/22/2026
    Updated
    8/3/2026
    Deleted
    -