falText to imageComing soon

fal-ai/flux-subject

Name: fal-ai/flux-subject
Brand: fal

fal-ai/flux-subject is a text to image tool from fal that runs in the background and returns images. Coming soon: listed with its price, not yet open to runs.

This tool is listed but not yet available to run.

Priced by usage

Pricing

$0.052 per megapixel. Each image_size preset counts as 1 MP, and a custom width × height rounds up to whole megapixels. Billed on num_images, default 1. The final charge comes from usage.

Limits

Runs: In the background
Returns: image
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`prompt` required	text	—	The prompt to generate an image from.
`image_url` required	URL or file	—	URL of image of the subject
`image_size`	JSON	square_hd	The size of the generated image.
`num_inference_steps`	number (whole) 1 to 50	8	The number of inference steps to perform.
`seed`	number (whole)	—	The same seed and the same prompt given to the same version of the model will output the same image every time.
`guidance_scale`	number 0 to 20	3.5	The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.
`num_images`	number (whole) 1 to 4	1	The number of images to generate.
`output_format`	one of jpeg, png	png	The format of the generated image.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "fal-ai/flux-subject",
    "input": {
      "prompt": "On the beach, a lady sits under a beach umbrella with '\''Omini'\'' written on it. She'\''s wearing this shirt and has a big smile on her face, with her surfboard hehind…",
      "image_url": "https://storage.googleapis.com/falserverless/model_tests/ominicontrol/ominishirt.jpg"
    }
  }'