Gemini Omni 1.1 Flash

Use gemini-omni-1.1-flash to create video output. This page contains the complete request needed for this model.

Model facts

Property	Value
Model ID	`gemini-omni-1.1-flash`
Endpoint	`POST /api/v1/generation/create`
Output	Video
Modes	text-to-video, image-to-video, video reference
Pricing	View current pricing

Minimal request


curl -X POST https://api.api-stock.com/api/v1/generation/create \
  -H "Authorization: Bearer $API_STOCK_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gemini-omni-1.1-flash",
  "input": {
    "prompt": "A cinematic scene with soft natural light"
  }
}'

The create response contains a task ID:


{
  "code": 200,
  "data": {
    "taskId": "019ca881-9503-7270-a560-f00fc2b15785",
    "status": "not_started",
    "createdAt": "2026-08-22T12:00:00.000Z"
  }
}

Parameters

Parameters belong inside the top-level input object. Unknown fields are rejected.

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	—	Describe the scene, motion and sound. max 4000 chars
`imageUrls`	string[]	No	—	First frame and optional last frame. Cannot be combined with reference inputs.
`referenceImageUrls`	string[]	No	—	Reference images (up to 7; up to 5 with a reference video). Cannot be combined with imageUrls.
`referenceVideoUrls`	string[]	No	—	One source video, 3–10 seconds. Output follows source duration and is billed per generation. Cannot be combined with imageUrls.
`aspectRatio`	“16:9” \| “9:16”	No	`"16:9"`	Output aspect ratio
`duration`	4 \| 6 \| 8 \| 10	No	`8`	Output duration. Ignored with a source video, which uses a flat per-generation price.
`resolution`	“360p” \| “720p” \| “1080p” \| “4k”	No	`"720p"`	Output resolution; 1080p and 4K are upscaled outputs.

Modes

Minimal generation


{
  "model": "gemini-omni-1.1-flash",
  "input": {
    "prompt": "A cinematic scene with soft natural light"
  }
}

With image urls


{
  "model": "gemini-omni-1.1-flash",
  "input": {
    "prompt": "A cinematic scene with soft natural light",
    "imageUrls": [
      "https://example.com/input.jpg"
    ]
  }
}

With reference image urls


{
  "model": "gemini-omni-1.1-flash",
  "input": {
    "prompt": "A cinematic scene with soft natural light",
    "referenceImageUrls": [
      "https://example.com/input.jpg"
    ]
  }
}

With reference video urls


{
  "model": "gemini-omni-1.1-flash",
  "input": {
    "prompt": "A cinematic scene with soft natural light",
    "referenceVideoUrls": [
      "https://example.com/input.mp4"
    ]
  }
}

Constraints

prompt: maximum 4000 characters.
aspectRatio: allowed: 16:9, 9:16.
duration: allowed: 4, 6, 8, 10.
resolution: allowed: 360p, 720p, 1080p, 4k.

Invalid types, unsupported enum values, out-of-range numbers, and missing required fields return HTTP 400 with error.code: "invalid_input". Correct the request rather than retrying it unchanged.

Result

Poll the task or provide a top-level webhook URL in the create request:


curl https://api.api-stock.com/api/v1/task/status/$TASK_ID \
  -H "Authorization: Bearer $API_STOCK_KEY"

A successful media task returns one or more files:


{
  "code": 200,
  "data": {
    "taskId": "019ca881-9503-7270-a560-f00fc2b15785",
    "status": "finished",
    "files": [
      {
        "fileUrl": "https://s3.api-stock.com/result.mp4",
        "fileType": "video"
      }
    ],
    "createdTime": "2026-08-22T12:00:00.000Z"
  }
}

See Tasks and webhooks for terminal statuses, retries and webhook delivery.