Runway

Runway is a video family built for a cinematic look, with strong text-to-video and video-to-video. Reach for it when style and control matter.

Best for

Cinematic, stylised generation.
Video-to-video restyling.
Creative and marketing work.


Modality	Video (text/image/video in, video out)
Example model id	`runway-gen-4`
Endpoint	`POST /v1/videos` (async submit-and-poll)

Example

Video generation is asynchronous: submit a job, then poll for the result.

Submit a job

curl https://api.heyaskr.ai/v1/videos \
  -H "Authorization: Bearer ASKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "runway-gen-4",
    "prompt": "a neon city street at night, cinematic dolly shot",
    "aspect_ratio": "16:9",
    "duration": "5"
  }'

The response returns a job id, an estimated_cost, and status: "pending".

Poll for the result

curl https://api.heyaskr.ai/v1/videos/JOB_ID \
  -H "Authorization: Bearer ASKR_API_KEY"

Poll every 5–10 seconds until status is completed (the response includes the video URL) or failed.

Pricing

Priced per second of output. As a rough guide, expect around $0.15 per second, so a 5-second clip is about $0.75. You’re only charged when a job completes.

Image
Runway sample output: a still frame from a generated clip

The model id and prices above are examples. Confirm the exact id and current price against the live /v1/models list before you rely on them.

⌘I

Overview

Chat & code

Image

Video

Audio

Best for

Example

Pricing

​Best for

​Example

​Pricing

Best for

Example

Pricing