Runway Gen-4 Turbo
runway-gen-4-turboRunway's Gen-4 Turbo on Replicate. Fast image-to-video generation producing 5s and 10s clips at 720p with strong character and scene consistency across shots.
- Price
- US$0.060/s
- Aspect ratios
- 16:9, 9:16, 1:1
- Duration
- 5 or 10 s
- Input โ output
- Text + Image โ Video
- Developer
- Runway
- Updated
- 23 September 2026
Playground
Try Runway Gen-4 Turbo
Input & output
This run
US$0.30 ยท 30 credits
Billed: 5 s
For accounts without a purchase: runs above 2 credits need a top-up.
New here?
10 free credits (US$0.10) when you sign up with Google
Usable 24 hours after sign-up, up to 5 runs per day and at most 2 credits per run. Other sign-in methods start without credits.
Examples
InputPrompt
she walks slowly forward, a breeze blows the wheat, a lightning strike in the distance
Length: 0:05
Settings
- aspect_ratio
- 16:9
- duration
- 5
InputPrompt
she stands still, wind blows her hair and the wheat, a lightning strike in the distance
Length: 0:05
Settings
- aspect_ratio
- 16:9
- duration
- 5
InputPrompt
an establishing shot of paris, the camera pans during a quiet morning dawn
Length: 0:05
Settings
- aspect_ratio
- 16:9
- duration
- 5
About Runway Gen-4 Turbo
Runway Gen-4 Turbo is a model by Runway in the Video generation category. On Railwail, Runway Gen-4 Turbo costs US$0.060 per second of video. A default run of 5 seconds costs US$0.30. Supported aspect ratios: 16:9, 9:16 and 1:1. Possible lengths: 5 or 10 s.
Pricing
| Per second | US$0.060 per second of video |
|---|---|
| Default run (5 s) | US$0.30 per run |
- 1 credit = US$0.01
Cost calculator
Price calculator
Total
US$30.00
3,000 credits
Per run
US$0.30 ยท 30 credits
billed as 5 s
Fixed price per run, known before the run starts.
API
curl https://railwail.com/api/v1/videos/generations \
-H "Authorization: Bearer $RAILWAIL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "runway-gen-4-turbo",
"prompt": "A slow drone shot over a misty pine forest at sunrise",
"image_url": "https://example.com/first-frame.jpg"
}'
# Response: {"job_id": "...", "status": "queued", ...}
# Poll until status is completed, failed or cancelled:
curl https://railwail.com/api/v1/jobs/JOB_ID \
-H "Authorization: Bearer $RAILWAIL_API_KEY"import os
import time
import requests
API = "https://railwail.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['RAILWAIL_API_KEY']}"}
job = requests.post(
f"{API}/videos/generations",
headers=headers,
json={
"model": "runway-gen-4-turbo",
"prompt": "A slow drone shot over a misty pine forest at sunrise",
"image_url": "https://example.com/first-frame.jpg",
},
).json()
while True:
status = requests.get(f"{API}/jobs/{job['job_id']}", headers=headers).json()
if status["status"] in ("completed", "failed", "cancelled"):
break
time.sleep(5)
print(status["status"], status.get("output_url"))const API = "https://railwail.com/api/v1";
const headers = {
Authorization: `Bearer ${process.env.RAILWAIL_API_KEY}`,
"Content-Type": "application/json",
};
const job = await fetch(`${API}/videos/generations`, {
method: "POST",
headers,
body: JSON.stringify({
model: "runway-gen-4-turbo",
prompt: "A slow drone shot over a misty pine forest at sunrise",
image_url: "https://example.com/first-frame.jpg"
}),
}).then((r) => r.json());
let status;
do {
await new Promise((r) => setTimeout(r, 5000));
status = await fetch(`${API}/jobs/${job.job_id}`, { headers }).then((r) => r.json());
} while (!["completed", "failed", "cancelled"].includes(status.status));
console.log(status.status, status.output_url);Videos run asynchronously: the first call returns a job_id; query /api/v1/jobs/JOB_ID until the status is completed.
Specifications
- Model ID
runway-gen-4-turbo- Developer
- Runway
- Category
- Video generation
- Input
- Text, Image
- Output
- Video
- Aspect ratios
- 16:9, 9:16, 1:1
- Duration
- 5 or 10 s
- Billing
- Fixed price, known before the run
- Catalog entry updated
- 23 September 2026
Input parameters
Inputs and settings from the model's input schema. The example in the API section shows which of them the API accepts.
imagerequiredReference image for image-to-video
Type: TextDefault: โAllowed values: โpromptrequiredWhat video to generate
Type: TextDefault: โAllowed values: up to 2,000 charactersseedOptional seed for reproducibility
Type: IntegerDefault: โAllowed values: โaspect_ratioType: ChoiceDefault:16:9Allowed values: 16:9, 9:16 or 1:1duration_secType: ChoiceDefault:5Allowed values: 5 or 10
Tags
- replicate
- runway
- gen-4
- image-to-video
- fast
- flagship
Use cases
Frequently asked questions
What is Runway Gen-4 Turbo?
Runway Gen-4 Turbo is a model by Runway in the Video generation category. On Railwail you can call it with an API key through the Railwail API.
How much does Runway Gen-4 Turbo cost on Railwail?
On Railwail, Runway Gen-4 Turbo costs US$0.060 per second of video. A default run of 5 seconds costs US$0.30. The price is known before the run starts. Usage is paid from prepaid credits; 1 credit equals US$0.01.
Which settings does Runway Gen-4 Turbo support?
According to its input schema, Runway Gen-4 Turbo knows these parameters: image, prompt (up to 2,000 characters), seed, aspect_ratio (16:9, 9:16 or 1:1) and duration_sec (5 or 10).
How fast is Runway Gen-4 Turbo?
There are not enough measured runs of Runway Gen-4 Turbo on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.
Is Runway Gen-4 Turbo better than Google Veo 3.1?
That depends on the task. Runway Gen-4 Turbo (Runway) and Google Veo 3.1 (Google DeepMind) are both models in the Video generation category. The comparison page shows their prices and specifications side by side.
Compare Runway Gen-4 Turbo and Google Veo 3.1Can Runway Gen-4 Turbo use an image as input?
Yes. Send the image in the image parameter.
How do I use Runway Gen-4 Turbo through the API?
Create a Railwail API key and send your request with the model ID runway-gen-4-turbo. Code examples for curl, Python and JavaScript are in the API section of this page.
Comparable models
All in this category- Google Veo 2Google DeepMind
Google's state-of-the-art video generation model. Simulates real-world physics with various visual styles.
- Google Veo 3 (Replicate)Google DeepMind
Google's Veo 3 served via Replicate. Text-to-video with native synchronized audio generation. High-fidelity motion and scene coherence in short clips.
- Google Veo 3.1Google DeepMind
Latest Veo with image-to-video and context-aware audio
Use Runway Gen-4 Turbo via the API
One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = US$0.01.