runwayml/gen-4.5 🔢🖼️📝❓ → 🖼️

⭐ Official ▶️ 13.7K runs 📅 Feb 2026 ⚙️ Cog 0.16.11

About

State-of-the-art video motion quality, prompt adherence and visual fidelity

Example Output

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."

Output

Performance Metrics

228.65s Prediction Time

228.66s Total Time

All Input Parameters

{
  "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.",
  "duration": 10,
  "aspect_ratio": "16:9"
}

Input Parameters

seed Type: integer: Random seed. Set for reproducible generation
image Type: string: Optional initial image for video generation (first frame). If not provided, video will be generated from text only.
prompt (required) Type: string: Text prompt for video generation
duration Default: 5: Duration of the output video in seconds
aspect_ratio Default: 16:9: Video aspect ratio

Output Schema

Output

Type: string • Format: uri

Example Execution Logs

Using seed: 1708253727
Generating text-to-video with ratio 1280:720 (16:9), duration 10s
Warning: No OID set
Generating video...
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Generated video in 227.0sec
Downloading 7440244 bytes
Downloaded 7.10MB in 0.24sec

Version Details

Version ID: 2e10d5ae08888b39ed31c828003f4a5ddc89a7cdec3bc7a9926661e0d22cb034
Version Created: February 18, 2026

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