Image Generation
The Image Generation node generates an image from a text prompt, and optionally a reference image. Use it for thumbnails, scenes, product shots, or any still image your workflow needs.
Inputs and outputs
Inputs: Image ref (one or several reference images; everything you wire in is used), Prompt, and a generic Flow input.
Output: an Image handle. Most runs produce one image, but if you pick a higher count on a model that supports it (see Settings below), the run generates that many.
Writing a prompt
Type your prompt into the box at the bottom of the card ("Describe the image..."). If Prompt is connected from another node, this box is disabled and shows "Prompt connected from input" instead.
The generated image appears in the preview area at the top of the card, with an animated effect while it's generating. Click Download in the settings bar to save it, this works even when the image is hosted elsewhere.
Choosing a model
Click the model picker to search and choose a model. Options are grouped by provider, with prices shown where available.
The default model is Nano Banana Pro, with a default aspect ratio of 9:16.
If you connect or upload a reference image, the model picker automatically filters to models that support image-to-image generation. If your current model can't do that, the app switches you to one that can.
Settings on the card
- Model picker
- Aspect ratio chip
- Resolution chip (only shown if the selected model supports it)
- Seed chip (only shown if the selected model supports seeds): leave it empty and every run gives you a different image. Type a number, or hit the dice to get one, and runs with the same prompt and settings tend to land on the same image, so you can change one word at a time and see what it does. Models are not perfectly repeatable, and switching model or settings changes the result, so treat a seed as a way to stay close to a look rather than a guarantee. Clear the field to go back to random.
- Images chip (only shown if the selected model can make more than one per run): pick how many images to generate, from 1 up to the model's limit
- Download, Inputs / Outputs, Rename, Delete
Chips only appear when the selected model supports them, so swapping models changes what you see on the bar.
Models available
This node follows your account's default provider (fal.ai, OpenRouter, or Kie AI); it doesn't have its own per-node provider override. fal.ai's curated list includes model families from Google (Nano Banana, Nano Banana Pro, Nano Banana 2, Nano Banana 2 Lite), OpenAI (GPT Image 2), ByteDance (Seedream), Black Forest Labs (FLUX.2), Wan and Alibaba (Wan, Qwen Image), Ideogram, and xAI (Grok Imagine). OpenRouter and Kie AI offer many of the same model families. Check the model picker for what's currently available and its price.
Running the node
Select the node to reveal its Run button. A standalone node with no inputs runs itself; run it again to also run everything downstream. If its inputs already have results, running it runs everything downstream too. If inputs aren't ready yet, you'll be asked whether to run the whole workflow, or run everything up to and including this node.
Click the Inputs / Outputs button at any time to see exactly what data went in and came out.