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INFRO

Runway · Video

Runway Gen-4 API pricing

runway/gen-4

Video generation. Runway Gen-4 by Runway, called through one INFRO key alongside every other model you run. We price it 35% below Runway's direct rate — the same model, the same weights, reached through a different integration.

Pricing

Per secondUSD · updated 2026-08-24

Runway direct

$0.12

per second

INFRO

$0.078

per second

You save

35%

on every unit

Illustrative launch rates, reconciled against published provider pricing on 2026-08-24. Live rates come from GET /v1/models once your key is active.

Calling Runway Gen-4

POST /v1/videosAt launch — Committed to the first release. In build now, not usable yet.
import os
from infro import Infro

client = Infro(api_key=os.environ["INFRO_API_KEY"])

# Video runs as an async job — you get an id back immediately.
job = client.videos.create(
    model="runway/gen-4",
    prompt="drone shot over a coastline at sunrise",
    duration_seconds=6,
    webhook={"url": "https://api.acme.com/hooks/infro"},
)

What this modality supports

  • Async jobs
  • Signed webhooks
  • Lip sync & avatars
  • Permanent output URLs

Text-to-video, image-to-video, lip sync, and talking avatars as managed async jobs. Submit, get a job id, receive a signed webhook when the render lands. Finished media is re-hosted on our CDN under your account, so output links don't expire underneath you.

QuickstartGet a key

Alternatives for video generation

Same modality, nearest in price. All of them share the request shape above, so comparing them is a one-word change.

Work out what Runway Gen-4 would cost you

Put your current spend on this model into the calculator and see the same workload priced here — or have us read your real usage.

Calculate your savingsFree cost audit