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xai/video (xAI Grok Video Generation)

You can run this example with:

npx promptfoo@latest init --example xai/video
cd xai/video

This example demonstrates video generation using xAI's Grok Imagine API.

Setup

  1. Set your xAI API key:
export XAI_API_KEY=your_api_key_here
  1. Run the evaluation:
npx promptfoo@latest eval

Configuration Options

Option Type Default Description
duration number 8 Video length in seconds (1-15)
aspect_ratio string 16:9 Aspect ratio (16:9, 4:3, 1:1, 9:16, 3:4, 3:2, 2:3)
resolution string 720p Output resolution (720p, 480p)

Advanced Features

Image-to-Video

Animate a static image:

providers:
  - id: xai:video:grok-imagine-video
    config:
      image:
        url: 'https://example.com/image.jpg'

Video Editing

Edit an existing video:

providers:
  - id: xai:video:grok-imagine-video
    config:
      video:
        url: 'https://example.com/video.mp4'

prompts:
  - 'Make the colors more vibrant'

Reference-to-Video

Guide the generated video with up to seven reference images:

providers:
  - id: xai:video:grok-imagine-video
    config:
      reference_images:
        - url: 'https://example.com/person.jpg'
        - url: 'https://example.com/shirt.jpg'
      duration: 10

reference_images cannot be combined with image or video, and reference-guided videos are limited to 10 seconds.

See Also