Overview

This ComfyUI workflow is a powerful visual analysis tool for comparing how different CFG values, samplers, and schedulers affect your output — all in one automated run.

It generates labeled CFG grids using loop logic and produces a clean, organized image sheet for rapid evaluation.

Perfect for testing new models, tuning consistency, and identifying the exact CFG “sweet spot” for your chosen checkpoint.

You can run:

• Grid 1 only

• Grid 2 only

• or both simultaneously for side-by-side testing

Each grid can have its own sampler, scheduler, seed, and CFG range, or you can sync them together.

The workflow supports:

• Configurable CFG range (e.g., 4 → 16, or any range you choose)

• Automatic text overlay on each tile (ex: “CFG: 3”)

• Optional dual-grid output (Grid 1 & Grid 2)

• Completely dynamic Sampler & Scheduler selection

• Auto-saving with metadata tokens in file names

• Support for any SDXL/SD1.5 checkpoint

• Seed locking for consistency across all CFG values

Great for:

• Finding the best CFG for a new model

• Comparing samplers

• Testing schedulers

• Understanding model behavior at low vs high CFG

• Building consistency pipelines for animation or character work

What This Workflow Does

For each CFG value in your range:

1. Runs a clean KSampler pass

2. Applies text overlay indicating the CFG

3. Places the result into a batch

4. Builds a final grid preview

5. Saves each image with metadata-rich filenames

All results come from:

• The same seed

• The same latent

• The same prompt

• Only CFG changes

This produces a perfectly controlled comparison panel.

Key Features

Dynamic CFG Range

• Loop-based iteration

• Auto-incrementing CFG via math expression

• Works with any sampler & scheduler combo

• No hardcoded values — completely flexible.

Use:

• FROM CFG #: starting point

• UP TO CFG #: ending point.

Example:
Set FROM = 1, TO = 9 → you get CFG 1 through 9 automatically generated.

Smart Text Overlay

Each tile automatically displays:

• “CFG: #”

Uses CR Overlay Text for clean, sharp rendering.

Labels are dynamically generated inside the loop, matching the exact CFG value used.
(You can adjust color and size.)

Dual Independent Grids

You can:

• Enable Grid 1

• Enable Grid 2

• Or run both grids (each with independent samplers/schedulers)

You can use this to run true A/B testing:

• Comparing two different samplers > ex: Euler vs DPM++

• Comparing two different schedulers > ex: Karras vs Simple

• Compare how seed affects CFG output

Metadata-Rich Saving

Using the Image Saver extension, filenames can include:

• %time

• %cfg

• %model_name

• %sampler_name

• %scheduler_name

• %seed

• And more

Example output:

22-24-21-perfectdeliberate_v40-cfg(3.0)-dpmpp_3m_sde-simple-79.png

Required Node Packs

This workflow uses the following custom nodes:

• Boyo Nodes (ForLoopStart / ForLoopEnd)

• rgthree Nodes (KSampler Config, Any Switch)

• Comfyroll Custom Nodes (CR Overlay Text)

• WAS Node Suite (Text Concatenate, Image Batch)

• JK ComfyUI Helpers (AnythingToString)

• ComfyUI Image Saver (for detailed filenames)

• ComfyUI Easy Use (included — seed node)

If you use ComfyUI-Manager, simply install these via:
Manager → Installed → Search the package → Install

Below is a quick start guide, followed by a detailed step-by-step list.
How to Use - Quick Start:

1. Choose your checkpoint

2. Set prompts (positive & negative)

3. Hit Run

How to Use - Full List

1. Choose your checkpoint

2. Set your latent size

3. Set prompts (positive & negative)

4. Choose sampler & scheduler

5. Choose seed

6. Set “Generate up to CFG #”

7. Press Queue Prompt

After generation:

• Preview grid appears in Comfy

• Images are saved automatically

• Filenames include CFG + metadata

Notes

• Batch size must stay at 1 (important for proper CFG isolation)

• Text overlay position can be changed in the CR Overlay Text node at each grid's side.

• You can bypass saving or preview nodes depending on your needs

• Two grids allow true A/B testing of sampler configurations