Runway Gen-4.5

Unit	Price
Per video	$1.20

Unit

Price

Per video

$1.20

Use this model

Video is asynchronous: videos.generate returns a queued job, and waitFor / wait_for polls GET /videos/{id} until it completes. The SDK examples assume you have created a server-side client.

const job = await client.videos.generate({
  model: "runway-gen4.5",
  prompt: "A cinematic aerial push across a desert at blue hour",
});
const video = await client.videos.waitFor(job.id);

console.log(video.video_url);

job = client.videos.generate(
    model="runway-gen4.5",
    prompt="A cinematic aerial push across a desert at blue hour",
)
video = client.videos.wait_for(job["id"])

print(video["video_url"])

curl https://www.ninjachat.ai/api/v1/videos \
  -H "Authorization: Bearer $NINJACHAT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"runway-gen4.5","prompt":"A cinematic aerial push across a desert at blue hour"}'

# then poll until status is "completed"
curl https://www.ninjachat.ai/api/v1/videos/$VIDEO_ID \
  -H "Authorization: Bearer $NINJACHAT_API_KEY"

Supported parameters

promptmodeldurationaspect_ratioimage_urlreference_imagesreference_videoreference_audiowatermark

Check current availability and limits

TypeScript SDK

const model = await client.models.retrieve("runway-gen4.5");

if (!model.servable) throw new Error("runway-gen4.5 is temporarily unavailable");

console.log({
  capabilities: model.capabilities,
  supportedParameters: model.supportedParameters,
  pricing: model.pricing,
  providers: model.providers,
});

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