Load Checkpoint (CheckpointLoaderSimple)
Loads unified safetensors checkpoints from models/checkpoints/ and exposes the UNet model, text encoder, and VAE output pins. Package: Built-in Core.
Updated Oct 17, 2026 · 1 min read
- Node / Pack
- Load Checkpoint (CheckpointLoaderSimple)
- Category
- loaders
- Inputs
- ckpt_name
- Outputs
- MODEL, CLIP, VAE
- Source Pack
- Built-in Core
What Load Checkpoint (CheckpointLoaderSimple) does in a ComfyUI graph
Loads unified safetensors checkpoints from models/checkpoints/ and exposes the UNet model, text encoder, and VAE output pins.
On the canvas, this node accepts `ckpt_name` and emits `MODEL, CLIP, VAE`. Every pin is color-coded by data type so you cannot accidentally wire a pixel `IMAGE` tensor into a `LATENT` pin without an intermediate encode step.
Installation and missing-node recovery on Windows
Load Checkpoint (CheckpointLoaderSimple) ships inside the default ComfyUI core on Windows. Double-click anywhere on the empty Studio canvas and type its name to drop it into your graph.
Download the full Windows desktop or portable package at /download to get started with a clean Python 3.12 environment.
FAQs
How do I fix "Load Checkpoint (CheckpointLoaderSimple)" showing up as a red box in ComfyUI?
Update your ComfyUI installation to the latest build from /download so all recent core nodes are registered.
What are the main inputs and outputs of Load Checkpoint (CheckpointLoaderSimple)?
Inputs: ckpt_name. Outputs: MODEL, CLIP, VAE.
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