WorkflowListedExternal

Workflow for Flux.1-dev ControlNet Upscaler — 1.0

Workflows for using a Flux Upscaler ControlNet.

Sourcecivitai.com/models/1142308

TaskMultiCapabilitiesImage to image · UpscalingFamilyFLUXEstimated VRAMNot yet characterizedBgrade

Runtime profile

Access: External workflow
Status: Listed
Source: Civitai
Updated: Oct 2, 2026

Source description

Workflows for using a Flux Upscaler ControlNet.

Specifically designed for jasperai / Flux.1-dev-Controlnet-Upscaler

Simple

Contains only Comfy Core nodes—requires an input image, upscale size, a prompt and the usual Flux settings.

Complex

Has some more features that may (or may not) achieve a better result.

Input image can optionally be scaled up to the target resolution (natively or via an Upscaling Model) which is then encoded into the input latent. Changing the denoise value will then vary how much Flux uses the original image vs the ControlNet. (denoise of 1.0 will ignore the pre-Flux upscale just like the Simple workflow, denoise of 0.0 will ignore the ControlNet). This may result in an image more consistent to the original, with Flux just smoothing out artifacts and filling in details.

AI-generated commentary

AI-generated explanation based on source and configuration details. Suggestions are clearly labeled.

Purpose

This workflow uses Flux Upscaler ControlNet to upscale an input image into a target resolution, using an upscale size, a prompt, and Flux settings.

Flow

The Simple path uses only Comfy Core nodes.
The Complex path can optionally scale the input image to its target resolution, either natively or with an upscaling model.
In Complex, the denoise setting controls how much Flux uses the original image versus ControlNet.

Inputs and outputs

A negative prompt is optional, and WD14 Tagger can generate tags for the positive prompt.

Setup

The workflow is designed specifically for jasperai / Flux.1-dev-Controlnet-Upscaler.

Dependencies

Listed model requirements include flux1-dev.safetensors, clip_l.safetensors, and t5xxl_fp16.safetensors.
Other listed model files are flux_ae.safetensors, jasperaiFlux1Dev_v10_upscaler.safetensors, and ultramix_balanced.pt.
The ComfyUI-WD14-Tagger node pack is also listed.

Configuration

Choose Simple for the Comfy Core only path, or Complex for optional image scaling and denoise control.
Suggestion · not verified
In Complex, denoise 1.0 ignores the pre-Flux upscale, while denoise 0.0 ignores ControlNet.

Cautions

The extra features in Complex may or may not produce a better result.

Does this need to be edited?

Sources

1 source

CivitaiPrimary

civitai.com/models/1142308

Verified Jul 20

Source excerpts

1 excerpt

NoteJul 20civitai.com/models/1142308

Source context: 357 downloads · Type Workflows · Base model Flux.1 D