This ComfyUI workflow turns Qwen 3.0 (4B, Thinking variant) into a drop-in text generator you can run inside a node graph. It loads the Qwen3-4B-Thinking weights with CLIPLoader, feeds your prompt and decoding settings to TextGenerate, and displays the final text in PreviewAny for quick copy-out. A MarkdownNote node is included in the graph with usage tips so you can remember the key parameters at a glance.
Under the hood, TextGenerate performs standard autoregressive decoding with adjustable parameters like temperature, top_p, and max new tokens. CLIPLoader is used here to point ComfyUI at the Qwen 3.0 text encoder weights (qwen_3_4b.safetensors) stored in models/text_encoders. The result is a compact, reproducible setup for generating detailed, reasoned responses, ideal for drafting explanations, outlining ideas, and iterating on prompt engineering directly in ComfyUI. As of 2026/03, ComfyUI supports the 4B Qwen 3.0 model for this workflow.
API
Use this workflow from code
Every Comfy workflow is a JSON graph. The payload below is this workflow, exactly as ComfyUI runs it — fetch it from the URL, keep it in version control, or load it in ComfyUI and run it node by node.
GET https://comfy.org/workflows/download/9bd4bdaa49c0.jsonFetching workflow JSON…
Run it from Python or TypeScript with the Comfy SDK. The same code targets Comfy Cloud or a ComfyUI you host yourself — only the base URL changes.
# Install (beta)
pip install comfy-sdk # Python
npm i @comfyorg/sdk # TypeScript
# Run this workflow (Python)
from comfy_sdk import Comfy
client = Comfy(api_key="comfyui-...")
wf = client.workflows.from_file("workflow_api.json")
job = client.run(wf)
for output in job.get_outputs("<output-node-id>"):
output.to_file(output.name)The SDK takes a workflow in API format: open this workflow in ComfyUI and use File → Export Workflow (API). API access requires a Comfy Cloud plan with an API key. SDK docs · Get an API key
FAQ
