falText to imageComing soon

fal-ai/hunyuan-image/v3/text-to-image

Name: fal-ai/hunyuan-image/v3/text-to-image
Brand: fal

fal-ai/hunyuan-image/v3/text-to-image 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

$0.13 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 text prompt for image-to-image.
`negative_prompt`	text		The negative prompt to guide the image generation away from certain concepts.
`image_size`	JSON	square_hd	The desired size of the generated image.
`num_images`	number (whole) 1 to 4	1	The number of images to generate.
`num_inference_steps`	number (whole) 1 to 50	28	Number of denoising steps.
`guidance_scale`	number 1 to 20	7.5	Controls how much the model adheres to the prompt. Higher values mean stricter adherence.
`seed`	number (whole)	—	Random seed for reproducible results. If None, a random seed is used.
`output_format`	one of jpeg, png	png	The format of the generated image.
`enable_prompt_expansion`	true or false	false	Whether to enable prompt expansion. This will use a large language model to expand the prompt with additional details while maintaining the original meaning.

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/hunyuan-image/v3/text-to-image",
    "input": {
      "prompt": "200mm telephoto through crowd gaps; subject laughing, candid; creamy background compression, color pop from a single bold garment, catchlight in eyes."
    }
  }'