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OpenRouterImage to videoComing soon

black-forest-labs/flux-3-video

black-forest-labs/flux-3-video is an image to video tool from OpenRouter 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.

Price pending

Pricing

Price pending.

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
prompt requiredtext—Text prompt describing the video to generate. Optional for models that support generating a video from image input alone; required by all other models.
durationone of
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
—Duration of the generated video in seconds
resolutionone of
720p, 1080p, 2K, 4K
—Resolution of the generated video
aspect_ratioone of
21:9, 16:9, 4:3, 1:1, 3:4, 9:16
—Aspect ratio of the generated video
frame_imagesJSON—Images to use as the first and/or last frame of the generated video. Each image must specify a frame_type of first_frame or last_frame.
generate_audiotrue or false—Whether to generate audio alongside the video. Defaults to the endpoint's generate_audio capability flag, false if not set.

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": "openrouter",
    "model": "black-forest-labs/flux-3-video",
    "input": {
      "prompt": "A serene mountain landscape at sunset"
    }
  }'