Voor accounts zonder aankoop: uitvoeringen boven 2 credits hebben een opwaardering nodig.
Nieuw hier?
10 gratis credits (US$Â 0,10) wanneer je je aanmeldt met Google
Bruikbaar 24 uur na aanmelding, tot 5 uitvoeringen per dag en maximaal 2 credits per uitvoering. Andere aanmeldmethoden starten zonder credits.
02
Examples
Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.
Prompt
A dense, verdant jungle world made up of small lego-like pieces. We see a rainbow chameleon running through the 3D world, the camera in and out of focus.
Lengte: 0:08
Settings
aspect_ratio
16:9
duration
10
Prompt
A scene in new york city where all the cars and cabs start floating up. We see a girl watching the scene from the back. indie aesthetic, daytime
Lengte: 0:08
Settings
aspect_ratio
16:9
duration
10
Prompt
A scene in new york city where all the cars and cabs start floating up. We see a girl watching the scene from the back
Lengte: 0:08
Settings
aspect_ratio
16:9
duration
10
Voorbeeldprompts
Voorbeelden uit de Railwail-catalogus. Ze zijn niet live op deze pagina gegenereerd.
Cinematic
Lengte: 0:10
Woman walking through sunflower field, golden hour
03
Over Runway Gen 4.5
SamengevatPer 23 september 2026
Runway Gen 4.5 is een model van Runway in de categorie Videogenerering. Op Railwail kost Runway Gen 4.5 US$Â 0,144 per videoseconde. Een standaardrun van 5 seconden kost US$Â 0,72. Ondersteunde beeldverhoudingen: 16:9, 9:16 en 1:1. Mogelijke lengtes: 5 of 10 s.
Achtergrond
Over Runway
Opgericht 2018 · New York City, USA
Runway was founded in 2018 in New York City by Cristobal Valenzuela, Anastasis Germanidis and Alejandro Matamala-Ortiz, three NYU ITP graduates who set out to build AI-native creative tools. Runway co-authored the Stable Diffusion paper (Rombach et al., 2022) with CompVis and LMU Munich and has shipped Gen-1 (2023), Gen-2 (2023), Gen-3 Alpha (June 2024), Gen-3 Alpha Turbo (July 2024), Gen-4 (March 2025) and Gen 4.5 (mid-2025). Gen 4.5 is the incremental update to Gen-4 with higher fidelity, longer durations and improved character consistency. The company has raised over $300M from Google, NVIDIA, Salesforce Ventures and General Catalyst at a $3B+ valuation, and runs the annual AI Film Festival as well as Hollywood-studio partnerships.
Latent video diffusion model (Diffusion Transformer) with reference and motion adapters
Runway Gen 4.5 is a closed Diffusion Transformer operating on a learned spatio-temporal latent space, building on the Gen-4 foundation released in early 2025. The model is conditioned on a multilingual text encoder plus optional image, reference-frame and motion-reference inputs. Gen-4 introduced character-, object- and environment-reference modes that let users lock identity, props or backgrounds across multiple shots; Gen 4.5 expands the reference vocabulary and improves consistency for longer sequences. Native generation is up to 10 seconds per clip at 720p (with 1080p upscale), and Runway's editor chains generations into multi-shot scenes. Gen 4.5 also tightens the integration with Runway's Act-One performance capture, Motion Brush, Lip Sync and Camera Control features. Training uses internal video, licensed footage and partner data on Runway's multimodal training infrastructure.
Parameters
Undisclosed
Mogelijkheden
Text-to-video and image-to-video at up to 720p (1080p via upscale)
10-second clips per generation, chainable into multi-shot scenes
Character-, object- and environment-reference modes for cross-shot consistency
Tight integration with Act-One performance capture, Motion Brush and Lip Sync
Strong cinematic camera-language and Camera Control sliders
Available via Runway web app, mobile app and API
Used in production by Hollywood studios for previs and inserts
Public model card and ongoing safety programme
Best for: film previs, ad creative, multi-shot narratives, character-driven content.
Training & licentie
Curated mix of internal video, licensed footage and partner data on Runway's multimodal training infrastructure; exact corpus size undisclosed.
Licentie: Proprietary commercial licence via Runway Terms of Service; generated content usable commercially on paid plans.
Veiligheidstests: Multi-stage moderation (NSFW, CSAM, celebrity-likeness, trademark); public model card; ongoing red-team programme and policy team.
curl https://railwail.com/api/v1/videos/generations \
-H "Authorization: Bearer $RAILWAIL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "runway-gen45",
"prompt": "A slow drone shot over a misty pine forest at sunrise"
}'
# 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-gen45",
"prompt": "A slow drone shot over a misty pine forest at sunrise",
},
).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-gen45",
prompt: "A slow drone shot over a misty pine forest at sunrise"
}),
}).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);
Runway Gen 4.5 is een model van Runway in de categorie Videogenerering. Op Railwail kunt u het aanroepen met een API-sleutel via de Railwail-API.
Hoeveel kost Runway Gen 4.5 op Railwail?
Op Railwail kost Runway Gen 4.5 US$Â 0,144 per videoseconde. Een standaardrun van 5 seconden kost US$Â 0,72. De prijs staat vast voordat de run begint. Gebruik wordt betaald met vooraf gekochte credits; 1 credit is gelijk aan US$Â 0,01.
Welke instellingen ondersteunt Runway Gen 4.5?
Volgens het invoerschema kent Runway Gen 4.5 deze parameters: prompt, duration (5 of 10), start_image en aspect_ratio (16:9, 9:16 of 1:1).
Hoe snel is Runway Gen 4.5?
Er zijn nog niet genoeg gemeten runs van Runway Gen 4.5 op Railwail om een uitvoeringstijd op te geven. Dit hangt af van de invoer, de instellingen en de belasting bij de provider.
Is Runway Gen 4.5 beter dan Google Veo 3.1?
Dat hangt van de taak af. Runway Gen 4.5 (Runway) en Google Veo 3.1 (Google DeepMind) zijn beide modellen in de categorie Videogenerering. De vergelijkingspagina toont hun prijzen en specificaties naast elkaar.
Kan Runway Gen 4.5 een afbeelding als sjabloon gebruiken?
Ja. Stuur de afbeelding in de parameter start_image.
Hoe gebruik ik Runway Gen 4.5 via de API?
Maak een Railwail-API-sleutel aan en stuur uw aanvraag met de model-ID runway-gen45. Codevoorbeelden voor curl, Python en JavaScript staan in het API-gedeelte van deze pagina.
