---
title: "Load Checkpoint (CheckpointLoaderSimple) — ComfyUI Node Inputs, Wiring & Troubleshooting"
description: "Complete reference for Load Checkpoint (CheckpointLoaderSimple) (Built-in Core) in ComfyUI: input pins (ckpt_name), output pins (MODEL, CLIP, VAE), and Windows setup."
canonical: https://comfy.ink/nodes/load-checkpoint
updated: 2026-10-17
---

# 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.

## Facts (2026-10-17)

- **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](https://comfy.ink/studio) and type its name to drop it into your graph.

Download the full Windows desktop or portable package at [/download](https://comfy.ink/download) to get started with a clean Python 3.12 environment.

## FAQ

### 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](https://comfy.ink/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.

## Related

- [ComfyUI Nodes Reference](https://comfy.ink/nodes)
- [ComfyUI-Manager](https://comfy.ink/nodes/comfyui-manager)
- [How to Fix Red Missing Nodes in ComfyUI Workflows](https://comfy.ink/howto/fix-missing-custom-nodes-red-boxes)
- [ComfyUI Studio Workspace](https://comfy.ink/studio)
- [KSampler & KSampler (Advanced)](https://comfy.ink/nodes/ksampler)

## Download

Free desktop app: [Download Comfy](https://comfy.ink/download)

Markdown mirror: https://comfy.ink/nodes/load-checkpoint.md