Model Compatibility
Model family compatibility matrix covering loaders, resolutions, samplers, CFG, VAE...
Install
npx skills add artokun/comfyui-mcp --skill model-compatibility -g -a claude-code -y- Repository
- artokun/comfyui-mcp883
- Category
- Media
- Updated
- 9d ago
- License
- MIT
- Context cost
- Mediumabout 3,000 tokens
- Runs scripts
- No, instructions only
What it does
Model family compatibility matrix covering loaders, resolutions, samplers, CFG, VAE, ControlNet, and LoRA compatibility for SD 1.5, SDXL, Flux, SD3, and video models
ComfyUI Model Compatibility Matrix
Stable Diffusion 1.5 (SD 1.5)
Overview
The original widely-adopted Stable Diffusion model. Huge ecosystem of fine-tunes, LoRAs, ControlNets, and embeddings. Still the most compatible and lightweight model family.
Configuration
| Parameter | Value |
|---|---|
| Loader | CheckpointLoaderSimple |
| Native Resolution | 512x512 |
| Supported Resolutions | 512x512, 512x768, 768x512, 768x768 (some fine-tunes) |
| VAE | Built-in or external (vae-ft-mse-840000-ema-pruned.safetensors) |
| CLIP | Single CLIP-L (output index 1 from checkpoint) |
| Text Encoder Node | CLIPTextEncode |
| CFG Range | 7-12 (typical: 7.5) |
| Negative Prompt | Yes, very important for quality |
| Steps | 20-30 (standard samplers) |
| Sampler | All standard samplers: euler, euler_ancestral, dpmpp_2m, dpmpp_sde, ddim |
| Scheduler | normal, karras |
| Denoise | 1.0 (txt2img), 0.5-0.8 (img2img) |
| VRAM (FP16) | ~2-3GB |
Workflow Pattern
CheckpointLoaderSimple → MODEL(0), CLIP(1), VAE(2)
CLIP(1) → CLIPTextEncode (positive) → CONDITIONING
CLIP(1) → CLIPTextEncode (negative) → CONDITIONING
EmptyLatentImage (width=512, height=512) → LATENT
KSampler (cfg=7.5, steps=20, sampler="euler", scheduler="normal") → LATENT
VAEDecode → IMAGE
SaveImage
VAE Notes
- Most SD 1.5 checkpoints have a built-in VAE, but it's often mediocre
- Recommended: Use external
vae-ft-mse-840000-ema-pruned.safetensorsfor better color accuracy - Load via
VAELoadernode and connect toVAEDecode - FP16 VAE can produce NaN on some images. FP32 VAE is more stable
ControlNet Compatibility
SD 1.5 has the largest ControlNet ecosystem:
