Do Flux and SD3 require negative prompts?

Flux requires no negative prompt at all, while SD3 and SDXL typically require much less negative guidance than the older SD 1.5 models.

Can I use SD 1.5 LoRAs with SDXL models?

No, LoRAs are strictly model-family specific and cannot be used interchangeably between SD 1.5, SDXL, Flux, or SD3.

What is the recommended CFG for Flux models?

Flux models require a CFG of 1.0. Using higher values will cause severe image artifacts as Flux uses embedded guidance.

Which models are best for high-speed, few-step generation?

SDXL Turbo (1-4 steps), SDXL Lightning (2-8 steps), and Flux Schnell (4 steps) are the most efficient options for fast generation.

How do I avoid 'NaN' errors with SD 1.5 VAEs?

Using an FP32 VAE instead of FP16 is more stable and helps prevent NaN errors on some images.

ComfyUI Model Compatibility Matrix

Name: ComfyUI Model Compatibility Matrix
Author: artokun

byartokun

•

データサイエンスとML

Provides precise configuration parameters and compatibility rules for Stable Diffusion, Flux, and video generation models within ComfyUI.

This skill equips Claude with a comprehensive reference for the technical specifications of major AI generative models, including SD 1.5, SDXL, Flux.1, and SD3. It ensures accurate workflow construction by providing native resolutions, optimal CFG ranges, required VAEs, and specific sampler settings. It also clarifies strict compatibility boundaries between different model families and their respective LoRAs or ControlNets, helping developers avoid common errors like 'NaN' outputs or architecture mismatches.

主な機能

0111 GitHub stars

02Specific VAE and CLIP loading requirements for each model family

03Comprehensive ControlNet and LoRA compatibility mapping

04Performance-optimized settings for specialized variants like Turbo and Lightning

05Native resolution and aspect ratio guidance for high-quality outputs

06Detailed configuration specs for SD 1.5, SDXL, Flux, and SD3

ユースケース

01Troubleshooting artifacts or errors caused by incorrect CFG or VAE settings

02Building optimized ComfyUI JSON workflows for specific model versions

03Verifying LoRA and ControlNet compatibility before model implementation

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add artokun/comfyui-mcp model-compatibility

For use in Claude.ai and ChatGPT

Download Skill