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    4k ControlNet Upscaler - v1.0
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    Refiner with AI prompting (Gemini 2.0) and upscaler up to 4k, including Reactor nodes for FaceSwap.

    Upload an image and have Gemini 2.0 extract a Flux prompt from that image. The Flux prompt will then be used to refine the image. After that it will go through 1 (2k upscale) or 2 (4k upscale) upscalers.

    Use any Flux model, and use high steps in the refiner for high details (lower amount of steps for lower details).

    COMMON ERROR

    If you get an API error from the Gemini Flash 2.0 node, but know that you have a valid API, check the inputs to the node. For some reason there has to be an actual input in all the nodes inputs, even if you aren't using them. Just upload whatever mp4 clip and mp3 clip you have to the nodes that are hidden behind the Gemini Flash 2.0 node. Some times you might have to also restart Comfy, or clear the cache from Gemini Flash 2.0 node in some other way in order to get it to work.

    If it still doesn't work, paste your API key directly to the node. Just be careful not to export it with some image, and accidently share it.

    GEMINI FLASH 2.0

    For instructions on how to install and use the Gemini Flash 2.0 node, check out the repository at Github.

    Description

    FAQ

    Comments (5)

    BascivitaiFeb 18, 2025
    CivitAI

    Too bad reactor only works in older versions of ComfyUI

    Creepybit
    Author
    Feb 18, 2025

    Except I updated Comfy today, and ReActor is still working 🤷‍♂️

    BascivitaiFeb 18, 2025

    Have you tried a fresh new comfyui portable by chance?

    Creepybit
    Author
    Feb 18, 2025

    @Bascivitai I have the latest, Comfy v0.3.14.

    Not sure exactly what you want. If you need help, just ask. But there's not much point in you trying to argue that I'm using an old version because my Reactor is working and yours isn't.

    BascivitaiFeb 18, 2025

    @Creepybit Ok thanks man.

    Workflows
    Flux.1 D

    Details

    Downloads
    382
    Platform
    CivitAI
    Platform Status
    Available
    Created
    2/17/2025
    Updated
    6/30/2026
    Deleted
    -

    Files

    4kControlnetUpscaler_v10.zip

    Mirrors

    HuggingFace (1 mirrors)
    CivitAI (1 mirrors)