Grok Imagine Video 1.5 Lite - Unifically

Generate videos at the lowest Grok price point with xAI’s Grok Imagine Video 1.5 Lite. Supports text-to-video and image-to-video from a single start frame.

Lite does not accept image_urls, end_image_url, keyframes, or voice_ids. For reference images, end frames, keyframes, and preset voices, use Grok Imagine Video 1.5.

Model

xai/grok-imagine-1.5-lite-video

Pricing

Billed per second of output video.

Resolution	Per second
480p	$0.01
720p	$0.015
1080p	$0.07

Parameters

Parameter	Type	Required	Default	Allowed Values	Description
`prompt`	string	Conditional	`""`	—	Text prompt guiding the video. Required unless `start_image_url` is supplied
`aspect_ratio`	string	No	`"auto"`	`"auto"`, `"1:1"`, `"16:9"`, `"9:16"`, `"4:3"`, `"3:4"`, `"3:2"`, `"2:3"`, `"21:9"`, `"5:2"`	Output aspect ratio. `"auto"` lets the model choose. Ignored for image-to-video (the start frame governs)
`duration`	int	No	`6`	`1`–`15`	Video length in seconds
`resolution`	string	No	`"480p"`	`"480p"`, `"720p"`, `"1080p"`	Output resolution
`start_image_url`	string	No	`null`	public `https://` URL	Start frame to animate
`audio`	boolean	No	`true`	`true`, `false`	Generate the soundtrack. `false` renders a silent clip

Unknown request fields are rejected rather than ignored.

Example Requests

Text to video

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "xai/grok-imagine-1.5-lite-video",
    "input": {
      "prompt": "A paper boat drifting down a rain-soaked street",
      "aspect_ratio": "9:16",
      "duration": 6,
      "resolution": "480p"
    }
  }'

Image to video

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "xai/grok-imagine-1.5-lite-video",
    "input": {
      "start_image_url": "https://example.com/start-frame.jpg",
      "prompt": "Slow push-in as the candle flickers",
      "duration": 6,
      "resolution": "720p",
      "audio": false
    }
  }'

Response

{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}

Volume discounts are available for almost all models. Reach out at contact@unifically.com to discuss custom pricing.