Core Nodes

Core nodes are built-in to ComfyUI.

Node List

Node	Description
CheckpointLoader	Load model checkpoints
CLIPTextEncode	Encode text prompts
KSampler	Sample latent images
VAE operations	Encode/decode latent
Image I/O	Load and save images

Common Patterns

Basic Generation

Checkpoint → Text(positive) → KSampler → Decode → Save
          ↘ Text(negative) ↗

With ControlNet

Checkpoint → Text → KSampler → Decode → Save
              ↑         ↑
ControlNet ← Image → Preprocessor

Node Categories

Model Loading

• CheckpointLoader
• UnetLoader
• VAELoader

Text Processing

• CLIPTextEncode
• CLIPTextEncodeSDXL
• StringLiteral

Sampling

• KSampler
• KSamplerAdvanced
• SamplerCustom

Latent Operations

• VAEEncode
• VAEDecode
• EmptyLatentImage
• LatentUpscale

Image Operations

• LoadImage
• SaveImage
• ImageScale
• ImageCrop

Next Steps

• CheckpointLoader - Load models
• CLIPTextEncode - Text encoding
• KSampler - Sampling
• Image I/O - Image operations