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    Ultimate Upscaler Klein-9b - v1.0
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    This is a flux2-klein experiement, the original model can restore images on its own but i found it lacked alot of things like adding new detail thus this lora, this was trained on alot of high quality images + heavily compressed jpeg pairs and also slightly blured images, its good at heavy jpeg compression, and light to heavy blur, it adds back high frequency detail detail, removes soft edges, it may color balance a little,

    Here’s the workflow Json link if needed

    https://drive.google.com/file/d/1OAyojvAmGHeGz2n8ASKuylR-9hQ9HgT5/view?usp=drivesdk


    Can generate very large images aswell 4MP,
    IMPORTANT / Keep in mind

    • Use the fast variant with 4 steps, the more steps you add the more detail itll have but max 12, i find youll get way better result with 4 steps and not 20 or more with the base model

    • It dose work well with normal quality images, light and heavy jpeg compression, blur, its very good at keeping faces

    • Was trained on a variaity of images but mainly of men

    PROPMT

    Please use this exact prompt for best results:
    restore the image quality, remove any compression artefacts, remove any haze and soft edges, enrich the original with new intricate detail in all textures and surfaces createing a professional photorealistic photograph with natral lighting and skin texture.

    Description

    FAQ

    Comments (31)

    Agent_SmthMar 18, 2026· 2 reactions
    CivitAI

    is the suggested prompt correct?
    it says "natral" maybe you mean "natural"

    thank you.

    kitten_wizardMar 18, 2026· 3 reactions

    There are actually multiple typos/misspellings in the required prompt: "artefacts", "createing", "natral".
    Have these typos been used during training?

    The metadata shows the only tag used was "Restore the quality in this image, add back realistic fine detail", but then again I have noticed metadata being missing or sparse recently.

    Loochi1
    Author
    Mar 18, 2026· 1 reaction

    lol sorry yea didnt realise

    Loochi1
    Author
    Mar 18, 2026· 1 reaction

    @kitten_wizard yes true, but i find the longer caption better, i mean i havent tested it much tho

    Loochi1
    Author
    Apr 4, 2026· 1 reaction

    @gooners_united Lmfao yea, I mean I wasn’t really thinking about the spelling just testing what works

    pogoApr 20, 2026· 1 reaction

    it's schizo prompting anyway. flux doesn't see a difference between "skin texture" and "natural skin texture"

    willywizardMar 18, 2026· 7 reactions
    CivitAI

    Can you upload an image with a workflow attached please?

    Loochi1
    Author
    Mar 20, 2026· 2 reactions

    i used the normal flux2 klein workflow comfyui gives you, just add a load lora only node paste the caption, load your image, then i usually resize to the desired dimentions, cfg 1, steps 4-8, thats pretty much it,

    willywizardMar 21, 2026

    @Loochi1 The normal one, or the image edit one?

    Because from what I tried even with a low de-noise using the split sigmas denoise node and the normal workflow it was still changing the image way to much.

    Only way I was able to get it to some what work was with the Klein image edit workflow and even then it had issues.

    Loochi1
    Author
    Mar 22, 2026· 1 reaction

    @willywizard Okay I’ll upload a workflow soon, and yea it’s image edit workflow, and your not ment to lower denoise with this one, keep it at 1,

    civitai7_Mar 25, 2026

    @Loochi1 workflow

    onlooker3457Mar 26, 2026

    @Loochi1 Pls bro, we need the workflow. Thaks for ur Lora!!!

    tyrannnyyyMar 30, 2026

    @Loochi1 Workflow please :)

    willywizardMar 30, 2026

    I don’t think he’s going to, so just use the default comfy Klein image edit workflow and add the Lora. That’s basically all there is to it, just confused the crap out of me for a little bit because I forgot that it was a thing, and how to set it up.

    tyrannnyyyMar 30, 2026

    @willywizard I tried that earlier but the default workflow never had a model noodle to plug into the LoRA, what are you seeing on your default template?

    Loochi1
    Author
    Apr 4, 2026

    @willywizard lol I’m sorry I kinda forgot about this, soz I’ll do it now but it’s nothing special

    Loochi1
    Author
    Apr 4, 2026· 1 reaction
    bjj8383708Apr 11, 2026· 1 reaction

    @Loochi1 what is Lachhhhhhh__kle9b__Blur-removeV1flux9b_000001920.safetensors' not in ['Flux2-Klein-Image-RestoreV1.safetensors ?

    JustAiGuyApr 29, 2026

    @Loochi1 thank you from all of us. I will try it out as well

    mmdd2543Mar 19, 2026· 1 reaction
    CivitAI

    Excellent LoRA! I get great results with it.

    onlooker3457Mar 26, 2026

    Could u pls send ur workflow?

    horseflybite500Mar 21, 2026· 2 reactions
    CivitAI

    I've tried some of the other options for upscaling/detailing and all of them will create a sharper image but will invent too much detail except for this one. I'm impressed.

    Seems to work better for me if the jump between resolutions is moderate. .3 MP to 1 MP or 2 MP looks pretty good, but at 3 MP it begins to focus too much on finer details and gives the image a pastel look.

    creedwarlockMay 8, 2026· 4 reactions
    CivitAI

    is there any plan for v2. this is great LoRa but i have issues with up-scaling with the subject as female.. mostly the hands and legs are hairy.

    Loochi1
    Author
    Jun 5, 2026

    yes definately, within this or next week

    creedwarlockJun 10, 2026

    @Loochi1 thanks for you reply... waiting to try that out once released

    jrewingwannabe947May 27, 2026· 1 reaction
    CivitAI

    fantastic work! the best one I've tried so far!

    TimmyHodorMay 30, 2026
    CivitAI

    I tried this for watermark removal and it delivered remarkably well. Was there any such examples in the training data?

    Loochi1
    Author
    Jun 5, 2026· 1 reaction

    no i dont think so, mostly jsut complression and blur artefacts etc, but i think flux klein can remove watermarks pretty well on its own

    AxseeJun 14, 2026· 1 reaction
    CivitAI

    You have some spelling mistakes in the prompt, is this normal?

    Swiftly0722Jul 4, 2026
    CivitAI

    This is amazing! It can restore very blurry pics without specific prompt.

    usphinxJul 10, 2026
    CivitAI

    By far my most used Klein LORA. Would jump ship immediately to Krea if you trained one for it.

    LORA
    Flux.2 Klein 9B

    Details

    Downloads
    8,249
    Platform
    CivitAI
    Platform Status
    Available
    Created
    3/18/2026
    Updated
    8/10/2026
    Deleted
    -
    Trigger Words:
    restore the image quality, remove any compression artefacts, remove any haze and soft edges, enrich the original with new intricate detail in all textures and surfaces createing a professional photorealistic photograph with natral lighting and skin texture,

    Files

    Available On (1 platform)

    Same model published on other platforms. May have additional downloads or version variants.