Async jobs
Queue generation with /v1/videos/jobs, poll /v1/videos/jobs/{id}, then download the finished video.
LumixAIRunway video generation API
Runway Gen-4.5 API for production videos.
Runway Gen-4.5 API is useful for cinematic video generation, storyboard motion, product sequences, and creative direction workflows without a separate Runway integration.
- Model slug
- runway-gen45
- Credit rate
- 25 credits per video
- Provider
- Runway
Model overview
Why use Runway Gen-4.5 through LumixAI?
Runway Gen-4.5 video generation through the LumixAI API with async jobs, polling, download URLs, and live pricing from the backend.
Use Runway Gen-4.5 through LumixAI when you want one stable REST workflow for prompts, model selection, async jobs, polling, usage tracking, and credit pricing. The page targets searches for Runway Gen-4.5 API, Runway Gen-4.5 video API, and Runway video generation API.
AI video generation
image-to-video workflows
production API integrations
Developer workflow
Call Runway Gen-4.5 without a separate provider integration.
Credit pricing
Runway Gen-4.5 starts at 25 credits per video before conditional rules.
await fetch("https://api.lumixai.live/v1/videos/jobs", {
method: "POST",
headers: {
"Content-Type": "application/json",
"X-API-Key": process.env.LUMIXAI_API_KEY
},
body: JSON.stringify({
model: "runway-gen45",
prompt: "cinematic product reveal, smooth camera motion",
aspectRatio: "16:9",
resolution: "720p",
duration: 6,
withSoundEffects: true
})
});SEO content source map
Know where this model fits before you build.
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