Grok Imagine 1.5

This guide shows how to generate videos using the Grok Imagine 1.5 model via the Leonardo.AI REST API.

Sample Request

curl --request POST \
     --url https://cloud.leonardo.ai/api/rest/v2/generations \
     --header 'accept: application/json' \
     --header 'authorization: Bearer <YOUR_API_KEY>' \
     --header 'content-type: application/json' \
     --data '
{
    "model": "grok-imagine-1.5",
    "public": false,
    "parameters": {
      "prompt": "<YOUR_PROMPT>",
      "guidances": {
        "start_frame": [
          {
            "image": {
              "id": "<YOUR_START_IMAGE_ID>",
              "type": "UPLOADED"
            }
          }
        ]
      },
      "duration": 6,
      "width": 1280,
      "height": 720,
      "quantity": 1,
      "motion_has_audio": true
    }
}
'

API Request Endpoint, Headers, Parameters

Endpoint

https://cloud.leonardo.ai/api/rest/v2/generations

Headers

--header "accept: application/json" \
--header "authorization: Bearer <YOUR_API_KEY>" \
--header "content-type: application/json"

Body Parameters

Parameter	Type	Definition
duration	`number`	Length of the generated video in seconds. Set to `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, or `15`. Defaults to `6`.
guidances.start_frame	`array`	Required. Maximum 1 item. Each item includes image.id and image.type (`INIT`, `GENERATION`, `UPLOADED`, `GENERATED`, or `VARIATION`).
height	`number`	Sets the height of the output video in pixels. Set to `0`, `400`, `544`, `720`, `736`, `960`, or `1280`. Defaults to `720`.
model	`string`	Specifies the model used for generation. Set to `grok-imagine-1.5`.
motion_has_audio	`boolean`	Whether the video generation will include audio. Defaults to `true`.
prompt	`string`	Text description of the video content to generate. Maximum of 5000 characters.
public	`boolean`	Controls whether the generated video is public (true) or private (false).
quantity	`number`	The number of outputs to generate. Set to `1`. Defaults to `1`.
width	`number`	Sets the width of the output video in pixels. Set to `0`, `400`, `544`, `720`, `736`, `960`, or `1280`. Defaults to `1280`.

Dimensions

The API accepts width and height parameters in the following combinations:

Aspect Ratio	Pixel Values (Width x Height)
Auto	0x0
1:1 (Square)	544x544
1:1 (Square)	960x960
16:9 (Landscape)	1280x720
9:16 (Portrait)	720x1280
9:16 (Portrait)	400x736
16:9 (Landscape)	736x400