# Grok Imagine Video 1.5 reference to video

Needs prompt and reference image urls. Served by fal.ai.

Grok Imagine Video 1.5 Reference to Video, served by fal.ai. The OpenAPI schema for the xai/grok-imagine-video/v1.5/reference-to-video queue. Price: Priced per second of output video, by resolution: 480p at $0.08/sec, 720p at $0.14/sec. A 5-second 480p clip costs $0.40; 720p costs $0.70. Cost scales linearly with duration. Each reference image adds $0.01 (1–7 supported). A reference audio clip, if provided, is included Queued execution; final USD charge comes from the unique billing event matching this exact endpoint and request_id. A missing receipt retains the reservation; no guessed final fee. Asynchronous: returns a request_id; poll fal/status and fetch fal/result with model "xai/grok-imagine-video" and that request_id. Billed once, when the result is ready; a generation that fails is refunded.

- Tool ID: `fal/xai-grok-imagine-video-v1-5-reference-to-video`
- Name in the catalog: Grok Imagine Video 1.5 Reference to Video
- Provider: [fal.ai](/providers/fal.md)
- Capability: [Grok Imagine Video](/tools/video-generation/grok-imagine-video.md)
- Price: usage based, the maximum is shown before a run
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

The provider’s price, with no markup. Billed for measured usage.


```json
{
  "model": "per_unit",
  "amountUsd": 0.14,
  "unitsField": "duration",
  "unitsDefault": 8,
  "maxUnits": 15,
  "fractional": true,
  "multipliers": [
    {
      "when": {
        "field": "resolution",
        "equals": "480p"
      },
      "setUsd": 0.08
    },
    {
      "when": {
        "field": "resolution",
        "equals": "720p"
      },
      "setUsd": 0.14
    },
    {
      "addUsdPer": {
        "field": "reference_image_urls",
        "usd": 0.01,
        "max": 7
      }
    }
  ]
}
```

Pricing source: [https://fal.ai/models/xai/grok-imagine-video/v1.5/reference-to-video](https://fal.ai/models/xai/grok-imagine-video/v1.5/reference-to-video). Priced per second of output video, by resolution: 480p at $0.08/sec, 720p at $0.14/sec. A 5-second 480p clip costs $0.40; 720p costs $0.70. Cost scales linearly with duration. Each reference image adds $0.01 (1–7 supported). A reference audio clip, if provided, is included Queued execution; final USD charge comes from the unique billing event matching this exact endpoint and request_id. A missing receipt retains the reservation; no guessed final fee..

Price verification date: 2026-10-07.

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "aspect_ratio": {
      "enum": [
        "16:9",
        "4:3",
        "3:2",
        "1:1",
        "2:3",
        "3:4",
        "9:16"
      ],
      "description": "Aspect ratio of the generated video.",
      "type": "string",
      "title": "Aspect Ratio",
      "default": "16:9"
    },
    "duration": {
      "type": "integer",
      "description": "Video duration in seconds.",
      "maximum": 15,
      "title": "Duration",
      "default": 8,
      "minimum": 1
    },
    "resolution": {
      "enum": [
        "480p",
        "720p"
      ],
      "description": "Resolution of the output video.",
      "type": "string",
      "title": "Resolution",
      "default": "480p"
    },
    "reference_image_urls": {
      "type": "array",
      "title": "Reference Image URLs",
      "description": "One or more reference image URLs to guide the video generation as style and content references. Reference in prompt as <IMAGE_0>, <IMAGE_1>, etc. Maximum 7 images.",
      "items": {
        "type": "string"
      },
      "minItems": 1,
      "maxItems": 7
    },
    "prompt": {
      "type": "string",
      "title": "Prompt",
      "description": "Text prompt describing the video. Tag references as <IMAGE_0>, <IMAGE_1>, etc.",
      "maxLength": 4096
    }
  },
  "required": [
    "prompt",
    "reference_image_urls"
  ],
  "additionalProperties": false
}
```

## Published example

This is the provider tool’s published example. Replace example values with the user’s requested inputs, respecting the schema; do not execute an example merely to test a connection.


```json
{
  "tool_id": "fal/xai-grok-imagine-video-v1-5-reference-to-video",
  "input": {
    "prompt": "The person from <IMAGE_0> walks through a rainy neon-lit street.",
    "reference_image_urls": [
      "https://v3b.fal.media/files/b/0a8b90e0/BFLE9VDlZqsryU-UA3BoD_image_004.png"
    ]
  }
}
```

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

This tool uses deferred settlement. Follow its returned task/run instructions; preserve the existing reservation until the result is reconciled.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

[Provider documentation](https://fal.ai/models/xai/grok-imagine-video/v1.5/reference-to-video)

[REST inspection](https://api.agentik.cc/v1/tools/fal/xai-grok-imagine-video-v1-5-reference-to-video) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

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[HTML page](/providers/fal/xai-grok-imagine-video-v1-5-reference-to-video) · [Agent index](/llms.txt)