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runwayml/gen-4.5
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State-of-the-art video motion quality, prompt adherence and visual fidelity
Capabilities
Reference ImagesSeed
Cost
Community model (estimated from hardware time)
Input Parameters
| Name | Type | Description | Default | Constraints |
|---|---|---|---|---|
prompt* | string | Text prompt for video generation | — | — |
aspect_ratio | string | Video aspect ratio | "16:9" | 16:99:164:33:41:121:9 |
duration | integer | Duration of the output video in seconds | 5 | 510 |
image | string(uri) | Optional initial image for video generation (first frame). If not provided, video will be generated from text only. | — | — |
seed | integer | Random seed. Set for reproducible generation | — | — |
promptrequiredstringText prompt for video generation
aspect_ratiostringVideo aspect ratio
Default:
"16:9"16:99:164:33:41:121:9
durationintegerDuration of the output video in seconds
Default:
5510
imagestringOptional initial image for video generation (first frame). If not provided, video will be generated from text only.
seedintegerRandom seed. Set for reproducible generation
Version:
2e10d5ae0888Updated: 8/12/202610.0K runs