Runway Gen-4 AI Video Generator API
What the Runway Gen-4 Video API Does
Professional-grade AI video generation. Every capability accessible from a single Oracium endpoint: no Runway subscription, no separate credit wallet.
Runway Gen-4 text to video
Convert any text prompt into a cinematic video clip up to 10 seconds at native 4K resolution. Gen-4 interprets complex scene descriptions with precise control over environment, lighting, camera movement, and action the most capable text-to-video model Runway has shipped.
Runway Gen-4 image to video
Animate any reference image into a cinematic 4K video with fluid, coherent motion. Gen-4's spatial understanding maintains consistent environments, objects, and backgrounds across camera movements no drift, no morphing, no visual inconsistency.
Character consistency across scenes
Gen-4's breakthrough capability. Supply a reference image of a character, and that character's appearance, clothing, and facial features are maintained across different shots, camera angles, and lighting conditions, solving the hardest problem in AI video for narrative production.
Motion Brush 3.0
Paint specific regions of an image to direct movement with distinct vector controls for speed and direction. Define which elements move, how fast, and in which direction frame-level creative control over generated motion that no other video API provides programmatically.
Act-Two character performance
Supply a driving performance video and a character reference image. Act-Two renders a synthesized performance where the character mimics the driver's expressions, head motion, and body language. The most capable character animation tool available via any video API.
Native 4K and Gen-4 Turbo
Gen-4 Turbo ships native 4K output, the first Runway model to do so natively rather than upscaling from a lower resolution. Previous generations topped at 720p native with 4K upscaling. Gen-4 Turbo delivers broadcast-grade resolution at the API's fastest generation speed.
From API key to cinematic video in 60 seconds
One Oracium key. Runway Gen-4, Seedance Pro, Veo 3, Kling 2.0, FLUX Pro 1.1, and 100+ models. No Runway subscription. No separate credit wallet.
Create your Oracium account.
Sign up at oracium.io. Instant access to Runway Gen-4, Gen-4.5, and 100+ generation models across image, video, and text: one account, one key, one dashboard.
Get your API key
Generate from the Oracium dashboard. Works across every model on the platform: no Runway developer account, no Runway credit purchase, no separate API setup.
POST to the Runway Gen-4 endpoint
Send your text prompt or image URL with model, duration, and resolution parameters. Poll the task ID for the video URL. Clips are typically ready in 30 to 90 seconds depending on length and quality tier.
Ship to production
Oracium manages infrastructure, rate limits, and failover. Build on top of it without Runway's 5 concurrent request cap or subscription queue constraints at the API level.
What developers build with the Runway Gen-4 Video API
Character consistency and native 4K make Gen-4 the right engine for production work where quality cannot be compromised, and brand identity must be maintained across every scene.
Brand film and campaign video
Generate brand films with a consistent spokesperson or character across multiple scenes. Gen-4's reference image character consistency means the same face, clothing, and visual identity appear in every shot, impossible with previous AI video models.
Film and TV previz tools
Build previsualisation applications for film and TV production. Runway already partners with Lionsgate for previz and concept development. Gen-4's cinematic quality and camera control make it production-grade for professional previsualization workflows.
E-commerce product video at scale
Animate product images into 4K video with consistent brand environments. Gen-4 image-to-video preserves product visual identity while generating cinematic motion, enabling catalogue-scale 4K product video production without a production crew.
Character animation platforms
Embed Act-Two character performance transfer inside creative tools and avatar platforms. Upload a driving performance video and a character reference image; the model renders the character mimicking the performance with precise expression and motion fidelity.
Adobe ecosystem integrations
Runway's December 2025 Adobe Firefly integration surfaces Gen-4 inside Premiere Pro and Photoshop. Building extensions or plugins in the Adobe ecosystem can leverage Gen-4 via the same Oracium API endpoint without separate Runway authentication.
GWM-1 Worlds and Avatars
Gen-4.5 is the foundation of Runway's General World Model family announced in May 2026. Applications building persistent 3D worlds, photorealistic avatars, or robotics simulation environments can use the Gen-4.5 endpoint as the generative backbone for GWM-1 compatible workflows.
Runway Gen-4 vs Sora vs Kling 2.0 vs Veo 3
Head-to-head across the capabilities that matter for production video API use. All via Oracium, one key, unified billing.
Max resolution
Native 4K
1080p
1080p
4K
Max clip length
10 seconds
60 seconds
10 seconds
8 seconds
Text-to-video
Yes
Yes
Yes
Yes
Image-to-video
Yes
Yes
Yes
Yes
Character consistency
Via reference image
Limited
Limited
Limited
Motion Brush control
v3.0
No
No
No
Act-Two performance
Yes
No
No
No
Cost per second
$0.05 (Turbo) / $0.12 (4.5)
Subscription
~$0.056
~$0.75
Adobe Firefly integration
Yes
No
No
Via Adobe
One Oracium API key
Yes
Separate
Separate
Separate
| Feature | Runway Gen-4 (Oracium) | Sora (OpenAI) | Kling 2.0 | Veo 3 |
|---|---|---|---|---|
| Max resolution | Native 4K | 1080p | 1080p | 4K |
| Max clip length | 10 seconds | 60 seconds | 10 seconds | 8 seconds |
| Text-to-video | Yes | Yes | Yes | Yes |
| Image-to-video | Yes | Yes | Yes | Yes |
| Character consistency | Via reference image | Limited | Limited | Limited |
| Motion Brush control | v3.0 | No | No | No |
| Act-Two performance | Yes | No | No | No |
| Cost per second | $0.05 (Turbo) / $0.12 (4.5) | Subscription | ~$0.056 | ~$0.75 |
| Adobe Firefly integration | Yes | No | No | Via Adobe |
| One Oracium API key | Yes | Separate | Separate | Separate |
Start generating inunder 60seconds.
Get an API key, install the SDK, ship your first generation today.
FAQ
Start generating in
under 60 seconds.
Get an API key, install the SDK, ship your first generation today.