falText to videoComing soon

fal-ai/wan-25-preview/text-to-video

Name: fal-ai/wan-25-preview/text-to-video
Brand: fal

fal-ai/wan-25-preview/text-to-video is a text to video tool from fal that runs in the background and returns video. 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

duration: 5 (default) $0.325, 10 $0.65, otherwise $0.65 per run. The final charge comes from usage.

Limits

Runs: In the background
Returns: video
Longest queue wait: 3600s
Run deadline: 3600s
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 video generation. Supports Chinese and English, max 1500 characters.
`audio_url`	URL or file	—	URL of the audio to use as the background music. Must be publicly accessible. Limit handling: If the audio duration exceeds the duration value (5 or 10 seconds), the audio is truncated to the first 5 or 10 seconds, and the rest is discarded. If the audio is shorter than the video, the remaining part of the video will be silent. For example, if the audio is 3 seconds long and the video duration is 5 seconds, the first 3 seconds of the output video will have sound, and the last 2 seconds will be silent. - Format: WAV, MP3. - Duration: 3 to 30 s. - File size: Up to 15 MB.
`aspect_ratio`	one of 16:9, 9:16, 1:1	16:9	The aspect ratio of the generated video
`resolution`	one of 480p, 720p, 1080p	1080p	Video resolution tier
`duration`	one of 5, 10	5	Duration of the generated video in seconds. Choose between 5 or 10 seconds.
`negative_prompt`	text	—	Negative prompt to describe content to avoid. Max 500 characters.
`enable_prompt_expansion`	true or false	true	Whether to enable prompt rewriting using LLM. Improves results for short prompts but increases processing time.
`seed`	number (whole)	—	Random seed for reproducibility. If None, a random seed is chosen.

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/wan-25-preview/text-to-video",
    "input": {
      "prompt": "The white dragon warrior stands still, eyes full of determination and strength. The camera slowly moves closer or circles around the warrior, highlighting the…"
    }
  }'