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    Klein 9B Body Weight Slider - Klein 4B
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    A bodyweight slider for Flux 2 Klein.

    As Flux 2 Klein base models were uploaded, the quality of the concept sliders is great.

    This is a first-shot, I'll refine it and upload a 4B version too.

    I recomment weights from -4.0 to 4.0 for realistic results.

    Hope you like it!

    Description

    FAQ

    Comments (10)

    eyeonyouJan 23, 2026· 5 reactions
    CivitAI

    why a slider though, prompt the model right and it gives you bigger or smaller anyway, just asking from a place of general confusion

    l226
    Author
    Jan 23, 2026· 14 reactions

    Yeah so the sliders are not made to have one thing and the other, they're made to have control on how much you want one thing without having to modify the prompt.

    Modifying the prompt can lead to drastic unrelated changes, even with the same seed, while a LoRA slider changes only the concept it's trained on.

    Hope this helps :)

    SwordsmanFeb 5, 2026· 12 reactions
    CivitAI

    Cool lora, can you make a tall/short slider as well?

    sniiper2011Feb 13, 2026· 3 reactions
    CivitAI

    No matter whether I set it to +3 or -3, the photo doesn't change. Could someone help me?

    astroaidaMar 5, 2026
    CivitAI

    trying with i2i Anime to realism convert. over 5 is effecting the editing mode. maybe -4 to +4 is just for text to image?

    GoreanApr 9, 2026· 1 reaction
    CivitAI

    I tested version 1.5 and I have to say, it's incredibly good. For my normal use, I set it to -4.0, but you can also set it up to -7.0 without significantly affecting the rest of the image. A very nice LoRa, thank you for that.

    jasonzhangodApr 17, 2026· 2 reactions
    CivitAI

    Very satisfied with this effect. Adding at least -4 can restore the flux model to its normal body type. Flux is really frustrating as it tends to treat white clothing as part of the body during inpainting, causing various methods to fail. Only adding this Lora parameter solves this issue, preventing everyone from looking overweight after generation. Without this Lora, I would be really frustrated.

    jasonzhangodApr 17, 2026· 1 reaction

    And the best part is that she lost weight but her face didn't change, which is what I admire most about him. I really hate it when many loras change people's faces, but that's not the case here.

    Agent_SmthMay 10, 2026
    CivitAI

    thank you for this. I'm looking for a slider to make poeple older, no one did it (except a guy who ask 50$ charge for a slider lora that is probably trained on text only.. ridiculous).

    dark9spring842Jun 10, 2026
    CivitAI

    How should I write prompts for adjusting body shape when editing images? If I write 'keep the character's appearance unchanged', I need to set the LoRA to a very high value to achieve noticeable body shape changes; but if I specifically describe making the character fatter, I need to set the LoRA to a very low value — otherwise, even with a strength of 1.5, the generated character will be too fat.

    LORA
    Flux.2 Klein 4B
    by l226

    Details

    Downloads
    729
    Platform
    CivitAI
    Platform Status
    Available
    Created
    1/23/2026
    Updated
    8/11/2026
    Deleted
    -