This ComfyUI tutorial workflow, Nano Banana 2.1: Text to Image, is a minimal, fast text-to-image pipeline built around two nodes: ByteDanceSeedreamNodeV3 for image generation and SaveImageAdvanced for output. Your prompt flows directly into ByteDanceSeedreamNodeV3, which calls a remote API backend labeled "Nano Banana 2.1" to synthesize a single image without requiring any input files. Typical controls on this node include prompt/negative prompt, width/height, and seed for reproducibility (exact options depend on your installed node version and provider limits).
The generated image tensor is passed to SaveImageAdvanced, which handles file naming, format, metadata, and output directory. This makes it ideal for quick iterations on brand marketing posters, e-commerce product shots, or character series: type a clear prompt, optionally lock the seed for consistency, pick an aspect ratio, and hit Queue. The result is a clean, self-contained image saved to disk with metadata, ready for review or downstream editing.
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.
Run it from TypeScript or Python with the Comfy SDK. The same code targets Comfy Cloud or a ComfyUI you host yourself — only the base URL changes.
// Install (beta)
npm i @comfyorg/sdk
// Run this workflow (TypeScript)
import { Comfy } from "@comfyorg/sdk";
const client = new Comfy({ apiKey: "comfyui-..." });
const wf = await client.workflows.fromFile("workflow_api.json");
const job = await client.run(wf);
await job.getOutputs("<output-node-id>")[0].toFile("output.png");The SDK takes a workflow in API format: open this workflow in ComfyUI and use File → Export Workflow (API).
Comfy Cloud API access requires a plan with an API key.
FAQ
