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Endpoints

MethodEndpointDescription
POST/api/v1/generateTask/hailuo-2-3-fastCreate generation task
GET/api/v1/statusTask/hailuo-2-3-fastQuery task status

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Authentication

All requests require an API Key in the header: 
Authorization: Bearer YOUR_API_KEY

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Request Body

{
  "request_type": "async",
  "callback_url": "https://your-server.com/callback",
  "provider": "auto",
  "input": {
    "mode": "standard-image-to-video",
    "prompt": "animate this character portrait into a short dynamic shot",
    "image_urls": [
      "https://example.com/input.jpg"
    ],
    "duration": 6
  }
}

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Parameters

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request_type
string
default:"async"
async (polling) or callback (webhook)
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callback_url
string
Callback URL, required when request_type=callback (conditional)
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provider
string
default:"auto"
Routing strategy: auto, value, or official
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input
object
required
Model input parameters
Mode Options:
  • standard-image-to-video - Standard image-to-video, fixed output resolution 768p
  • pro-image-to-video - Pro image-to-video, fixed output resolution 1080p
Important Constraints:
  • This model only supports image-to-video.
  • Sending text-to-video modes returns Invalid mode type.
Image Rules:
  • Format must be JPG/JPEG/PNG.
  • Aspect ratio must be greater than 2:5 and less than 5:2.
  • Short side must be greater than 300px.
  • File size must not exceed 20MB.
Duration Rules:
  • standard-image-to-video requires duration, and only 6 or 10 is accepted.
  • pro-image-to-video has fixed output duration 6 seconds.

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Example

Standard Image-to-Video 
curl -X POST "https://api.apixo.ai/api/v1/generateTask/hailuo-2-3-fast" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "provider": "value",
    "input": {
      "mode": "standard-image-to-video",
      "prompt": "animate this still image with smooth parallax and lighting changes",
      "image_urls": ["https://example.com/input.jpg"],
      "duration": "10"
    }
  }'
Pro Image-to-Video 
curl -X POST "https://api.apixo.ai/api/v1/generateTask/hailuo-2-3-fast" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "callback",
    "callback_url": "https://your-server.com/callback",
    "provider": "official",
    "input": {
      "mode": "pro-image-to-video",
      "prompt": "animate this image into a high-energy camera move",
      "image_urls": ["https://example.com/input.jpg"]
    }
  }'

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Response

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POST /api/v1/generateTask/hailuo-2-3-fast

Returns taskId on success for subsequent status queries. Success: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678"
  }
}
Error: 
{
  "code": 400,
  "message": "Invalid mode type",
  "data": null
}

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GET /api/v1/statusTask/hailuo-2-3-fast

Query task execution status and results via taskId. 
curl -X GET "https://api.apixo.ai/api/v1/statusTask/hailuo-2-3-fast?taskId=task_12345678" \
  -H "Authorization: Bearer YOUR_API_KEY"
Success: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "success",
    "resultJson": "{\"resultUrls\":[\"https://r2.apixo.ai/video.mp4\"]}",
    "createTime": 1767965610929,
    "completeTime": 1767965730929,
    "costTime": 120000
  }
}
Failed: 
{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "CONTENT_VIOLATION",
    "failMsg": "Content does not meet safety guidelines"
  }
}

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Status Response Fields

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taskId
string
Unique task identifier.
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state
string
Current task state: pending, processing, success, or failed.
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resultJson
string
JSON string containing resultUrls array. Only present on success. Parse with JSON.parse().
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failCode
string
Error code. Only present when state is failed. See Error Codes.
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failMsg
string
Human-readable error message. Only present when state is failed.
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createTime
integer
Task creation timestamp (Unix milliseconds).
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completeTime
integer
Task completion timestamp (Unix milliseconds).
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costTime
integer
Processing duration in milliseconds.

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Error Codes

CodeDescription
400Invalid parameters or request error
401Invalid or missing API Key
402Insufficient credits
429Rate limit exceeded
Fail CodeDescription
CONTENT_VIOLATIONContent violates safety guidelines
INVALID_IMAGE_URLCannot access the provided image URL

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Rate Limits

LimitValue
RequestsSubject to workspace and provider limits
Concurrent tasksSubject to workspace and provider limits
If limits are exceeded, the API returns 429.

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Tips

  • This model only supports image-to-video.
  • Cheapest public preset: standard-image-to-video + duration=6.
  • standard-image-to-video is billed by duration. pro-image-to-video is billed per task.
  • pro-image-to-video ignores duration even if included.
  • Result URLs may be temporary. Download generated videos promptly after success.
For production workloads, prefer callback mode to reduce frequent polling.