Transparent pricing with no hidden fees. Pay as you go.
runway-gen-4.5runway-gen-4.5| Model | Spec | PoYo price | Official price | You save |
|---|---|---|---|---|
| runway-gen-4.5 | 5s | $0.375/video 75 credits /video | - | - |
10s | $0.750/video 150 credits /video | - | - |
* Actual fees are based on the final output.
Complete guide to using Runway Gen-4.5 API for Cinematic, High-Fidelity Video
Three reasons teams pick Gen-4.5 when prompt fidelity, visual polish, and controllability matter.
01
Runway positions Gen-4.5 as a flagship video model focused on visual fidelity, cinematic realism, and premium motion quality for production-oriented creative work.
02
The official model description emphasizes prompt adherence, physical accuracy, and precise creative control, which matters when scene structure, object motion, and visual detail need to stay aligned.
03
PoYo keeps the Gen-4.5 integration simple with 5-second and 10-second output, optional single-image guidance, and a request shape that is easy to drop into existing async video pipelines.
Prototype dramatic establishing shots, motion studies, and mood-driven scenes from text.
Create higher-end short video assets for launch pages, paid social, and brand storytelling.
Add a more premium text-to-video model to internal creation tools and review flows.
Turn long-form creative briefs into motion drafts with pure text or optional image-guided starts.
Step 1: Create a PoYo API key
Use your normal PoYo async workflow for task submission and status tracking.
Create API Key →
Step 2: Submit a text-to-video request
Send model=runway-gen-4.5 with a prompt, 5-second or 10-second duration, an optional aspect_ratio, an optional single reference image in image_urls, and an optional seed.
Add Credits →
Step 3: Read the result from status or webhook
Use the same PoYo callback and polling flow as other async video jobs.
View API Doc →
5 seconds: 75 credits
10 seconds: 150 credits
This keeps the current Gen-4.5 integration simple for teams that need premium text-to-video output with predictable spend.
Run Gen-4.5 through the same submit, status, and webhook flow you already use for other models.
Add a higher-end model to your stack without building a separate provider-specific client.
Teams can estimate spend immediately because duration is mapped to a simple fixed price.
PoYo handles the standard task lifecycle so Gen-4.5 is easier to plug into real products.
