falText to imageComing soon

fal-ai/flux-2

Name: fal-ai/flux-2
Brand: fal

fal-ai/flux-2 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

$0.0156 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.
`guidance_scale`	number 0 to 20	2.5	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.
`seed`	number (whole)	—	The seed to use for the generation. If not provided, a random seed will be used.
`num_inference_steps`	number (whole) 4 to 50	28	The number of inference steps to perform.
`image_size`	JSON	landscape_4_3	The size of the image to generate. The width and height must be between 512 and 2048 pixels.
`num_images`	number (whole) 1 to 4	1	The number of images to generate.
`acceleration`	one of none, regular, high	regular	The acceleration level to use for the image generation.
`enable_prompt_expansion`	true or false	false	If set to true, the prompt will be expanded for better results.
`output_format`	one of jpeg, png, webp	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-2",
    "input": {
      "prompt": "Dutch angle close-up of a survivor in post-apocalyptic setting, dust-covered face, dramatic harsh sunlight creating deep shadows, happy expression, desaturated…"
    }
  }'