Kiko XY Model Testing Workflow

Overview

This ComfyUI workflow is designed as a comprehensive testing suite to systematically find the optimal generation parameters for any given prompt. The workflow consists of four sequential testing phases, each building upon the results of the previous phase to progressively narrow down the best settings.

Purpose: To determine the optimal combination of model, sampler, scheduler, steps, and CFG values before proceeding to batch generation workflows.

Execution: Must be run sequentially (Parts 1→2→3→4) due to ComfyUI's execution model and parameter dependencies.

Workflow Structure

Part 1: Model Testing

Objective: Identify the best model (checkpoint) for your specific prompt

• Tests all your available Illustrious models against your prompt

• Generates an XY grid with labels comparing model performance

• Provides visual comparison to select the optimal base model

• Output: Best performing model identified for subsequent tests

Part 2: Sampler & Scheduler Testing

Objective: Find the optimal sampler and scheduler combination

• Uses the best model identified in Part 1

• Tests various sampler and scheduler combinations

• Generates labeled XY grid for easy comparison

• Output: Optimal sampler/scheduler pair for your use case

Part 3: Steps Optimization

Objective: Determine the ideal number of generation steps

• Uses the optimal model, sampler, and scheduler from previous parts

• Tests different step counts to find the sweet spot between quality and generation time

• Generates labeled XY grid showing step count impact

• Output: Optimal step count for your specific setup

Part 4: CFG Scale Testing

Objective: Fine-tune CFG (Classifier Free Guidance) values

• Uses all previously optimized parameters (model, sampler, scheduler, steps)

• Tests various CFG values to find the best prompt adherence vs. creativity balance

• Generates final labeled XY grid

• Output: Complete optimized parameter set ready for production workflows

Technical Implementation

Sequential Execution Requirements

Due to ComfyUI's execution model, each part must complete before the next begins:

1. Part 1 must finish to provide the optimal model selection

2. Part 2 depends on Part 1's model choice to test samplers/schedulers

3. Part 3 requires both model and sampler/scheduler from previous parts

4. Part 4 needs all prior optimizations to test CFG effectively

XY Grid Generation

Each testing phase generates labeled comparison grids:

• Visual side-by-side comparison of parameter variations

• Clear labeling for easy identification of optimal settings

• Systematic layout for methodical evaluation

Custom Nodes Dependencies

This workflow requires the following custom nodes:

Core Functionality Nodes

• AddLabel - ComfyUI-KJNodes

• GetNode - ComfyUI-KJNodes

• SetNode - ComfyUI-KJNodes

• JoinStrings - ComfyUI-KJNodes

Text Processing

• BNK_CLIPTextEncodeSDXLAdvanced - ComfyUI_ADV_CLIP_emb

• FormatMultiline - ComfyLab-Pack

• ttN text - ComfyUI_tinyterraNodes

List Management

• ListCheckpoints - ComfyLab-Pack

• ListFromMultiline - ComfyLab-Pack

• ListFromString - ComfyLab-Pack

• ListSamplers - ComfyLab-Pack

• ListSchedulers - ComfyLab-Pack

Interface & Controls

• Bookmark (rgthree) - rgthree-comfy

• Display Int (rgthree) - rgthree-comfy

• Fast Groups Bypasser (rgthree) - rgthree-comfy

Sampling & Generation

• SamplerCombo - ComfyUI-KikoTools

• WidthHeightSelector - ComfyUI-KikoTools

• SeedHistory - ComfyUI-KikoTools

XY Grid Generation

• XYPlotQueue - ComfyLab-Pack

• XYPlotRender - ComfyLab-Pack

Utilities

• String to Float - comfyui_HavocsCall_Custom_Nodes

• StringToInt - comfyui-string-converter

• PathchSageAttentionKJ - ComfyUI-KJNodes

Prompt Enhancement

• easy negative - ComfyUI-Easy-Use

• easy positive - ComfyUI-Easy-Use

Installation Requirements

Before using this workflow, ensure all custom nodes are installed:

​
# Navigate to your ComfyUI custom_nodes directory
​
cd ComfyUI/custom_nodes/
​
# Clone required repositories
​
git clone https://github.com/kijai/ComfyUI-KJNodes
​
git clone https://github.com/BlenderNeko/ComfyUI_ADV_CLIP_emb
​
git clone https://github.com/rgthree/rgthree-comfy
​
git clone https://github.com/bugltd/ComfyLab-Pack
​
git clone https://github.com/ComfyAssets/ComfyUI-KikoTools
​
git clone https://github.com/HavocsCall/comfyui_HavocsCall_Custom_Nodes
​
git clone https://github.com/glowcone/comfyui-string-converter
​
git clone https://github.com/yolain/ComfyUI-Easy-Use
​
git clone https://github.com/TinyTerra/ComfyUI_tinyterraNodes
​

Usage Workflow

1. Setup: Load the workflow and configure your base prompt

2. Execute Part 1: Run model testing, review XY grid results

3. Select Best Model: Choose optimal model from Part 1 results

4. Execute Part 2: Run sampler/scheduler testing with chosen model

5. Select Best Combination: Choose optimal sampler/scheduler pair

6. Execute Part 3: Run step count optimization

7. Select Optimal Steps: Choose best step count for quality/speed balance

8. Execute Part 4: Run final CFG testing with all optimized parameters

9. Record Results: Document the final optimized parameter set

10. Production: Use optimized settings in batch generation workflows

Benefits

• Systematic Optimization: Methodical approach ensures no optimal combinations are missed

• Visual Comparison: XY grids make it easy to spot quality differences

• Time Efficient: Automated testing saves manual trial-and-error time

• Reproducible: Consistent testing methodology across different prompts

• Foundation for Production: Optimized parameters provide solid foundation for batch workflows

Notes

• This workflow is designed specifically for Illustrious model family testing

• Results are prompt-specific and may vary significantly with different prompts

• Consider saving parameter sets for different prompt types/styles

• The workflow can be modified to test additional parameters as needed