Video

Runway Gen-4 Turbo API

Fast Runway Gen-4.

10s
Max clip length: ~45s
Avg. generation: 31 credits
From

Video · made with Runway Gen-4.5

A fashion model walking through an empty brutalist plaza at dusk, long black coat catching the wind, camera orbiting slowly, moody editorial grade.

Playground

Try Runway Gen-4 Turbo right here.

model: runway-gen4-turbo

Prompt

Aspect ratio Duration

Media inputs

Reference image

Advanced settings

Seed

Estimated cost 31–62 credits · $0.31–$0.62 Generate in Studio

Output Example · Runway Gen-4.5

A fashion model walking through an empty brutalist plaza at dusk, long black coat catching the wind, camera orbiting slowly, moody editorial grade.

Pricing

Simple per-generation pricing.

31–62 credits per generation ≈ $0.31–$0.62

The rate depends on the resolution and options you pick.

You only pay for successful generations. Failed jobs are refunded automatically.
One credit balance across every model on Apiframe, no per-model plans.
Start with free credits. No subscription required.
Volume discounts on larger plans.

See plans and credit packs

Specs

At a glance.

Provider Runway

Model ID runway-gen4-turbo

Aspect ratios 16:9, 9:16, 1:1, 4:3, 3:4, 21:9

Durations 5s, 10s

Image input Supported

Avg. time ~45s

Quickstart

How to call the Runway Gen-4 Turbo API.

Send one POST /v2/videos/generate request with your API key. The call returns a jobId you can poll, or pass a webhook_url and the result is pushed to you the moment it's ready.

Swap runway-gen4-turbo for any other model and nothing else changes.

Get API key Read the docs

generate.js

const response = await fetch("https://api.apiframe.ai/v2/videos/generate", {
  method: "POST",
  headers: {
    "X-API-Key": "afk_your_api_key_here",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
    "model": "runway-gen4-turbo",
    "runwayParams": {
      "image": "https://example.com/input.jpg",
      "seed": 1
    }
  }),
});
const { jobId } = await response.json();
console.log(jobId);

import requests

response = requests.post(
    "https://api.apiframe.ai/v2/videos/generate",
    headers={
        "X-API-Key": "afk_your_api_key_here",
        "Content-Type": "application/json",
    },
    json={
        "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
        "model": "runway-gen4-turbo",
        "runwayParams": {
            "image": "https://example.com/input.jpg",
            "seed": 1
        }
    },
)
print(response.json())  # { "jobId": "...", "status": "QUEUED" }

curl -X POST https://api.apiframe.ai/v2/videos/generate \
  -H "X-API-Key: afk_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
        "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
        "model": "runway-gen4-turbo",
        "runwayParams": {
            "image": "https://example.com/input.jpg",
            "seed": 1
        }
    }'

let job;
do {
  await new Promise((r) => setTimeout(r, 2000));
  job = await fetch("https://api.apiframe.ai/v2/jobs/JOB_ID", {
    headers: { "X-API-Key": "afk_your_api_key_here" },
  }).then((r) => r.json());
} while (job.status !== "COMPLETED" && job.status !== "FAILED");
console.log(job.result);

import requests, time

while True:
    job = requests.get(
        "https://api.apiframe.ai/v2/jobs/JOB_ID",
        headers={"X-API-Key": "afk_your_api_key_here"},
    ).json()
    if job["status"] in ("COMPLETED", "FAILED"):
        break
    time.sleep(2)
print(job["result"])

curl https://api.apiframe.ai/v2/jobs/JOB_ID \
  -H "X-API-Key: afk_your_api_key_here"

Input schema

Every field Runway Gen-4 Turbo accepts, with types and defaults. The full reference lives in the docs.

Field	Type	Description
prompt required	string	Text description of what to generate.
model required	string	The model identifier for this endpoint. Default:"runway-gen4-turbo" · "runway-gen4-turbo"
runwayParams.image	string (URL)	Use a still as the first frame.
runwayParams.seed	number	Reuse a number to reproduce the same result. step 1

The Runway flagship

Runway Gen-4 Turbo is one of 2 Runway video models on Apiframe. The full editorial page (showcase, comparison, and use cases) lives on the flagship.

Flagship from 75 cr Runway Gen-4.5

Production-grade clips with Runway control.

Explore Runway Gen-4.5 All video models

Runway Gen-4 Turbo questions

What teams ask before shipping with Runway Gen-4 Turbo. Everything else lives in the docs.

Is there an API for Runway Gen-4 Turbo?

Yes. Apiframe exposes Runway Gen-4 Turbo through a single REST endpoint (POST /v2/videos/generate with model: "runway-gen4-turbo"). You get one unified API, key, and billing across every supported model, with no separate Runway account required.

How much does the Runway Gen-4 Turbo API cost?

Runway Gen-4 Turbo uses simple pay-as-you-go pricing on Apiframe. You only pay for successful generations. See the pricing page for plans and volume discounts.

How do I call the Runway Gen-4 Turbo API?

Send a POST request to /v2/videos/generate with your X-API-Key and a JSON body containing model: "runway-gen4-turbo". The call returns a jobId; poll GET /v2/jobs/{id} or use a webhook to receive the result.

What parameters does Runway Gen-4 Turbo support?

Runway Gen-4 Turbo accepts 2 model-specific parameters (nested under runwayParams) plus the common prompt and webhook_url fields. See the input schema above for the full list with types and defaults.