falText to videoComing soon

kling/v4/text-to-video

kling/v4/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

$0.2041 per second. Billed on duration, default 5. 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

FieldKindDefaultDescription
prompttext—Text prompt. Either prompt or multi_prompt must be provided.
multi_promptJSON—Per-shot prompts for multi-shot generation. The video duration is the sum of the shot durations.
durationnumber (whole)
3 to 30
5Video duration in seconds (3-30).
resolutionone of
720p, 1080p
1080pOutput resolution.
aspect_ratioone of
16:9, 9:16, 1:1, 21:9
16:9Aspect ratio of the generated video.

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": "kling/v4/text-to-video",
    "input": {}
  }'