Video

Happy Horse 1.1 (Reference)

Credit-based pricing. Supports reference images, audio generation.

Try Happy Horse 1.1 (Reference) →Compare models

Output

video

Aspect ratio

16:9, 9:16, 1:1, 4:3, 3:4

Resolution

720p, 1080p

Duration

3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s

Inputs

Reference image (required)

Generates audio

Example prompt

Give Happy Horse a reference photo and a prompt — it places your character naturally into any scene with cinematic flair

Try this prompt →

LLM-ready

API & LLM schema

Exact request contract for this model. Agents can fetch it from /api/v1/models?id=alibaba/happy-horse/reference-to-video.

POST/api/v1/generate15 fields · 3 required

Field	Type	Requirement	Contract
`model_id`	constant	Required	ArtEmotion model identifier.
`extra`	object	Optional	Model-specific settings may also be nested here.
`max_credits`	number	Optional	Reject before submission if the estimated list price exceeds this cap. · Range: 1–…
`webhook_url`	string	Optional	Format: uri
`webhook_secret`	string	Optional	Optional model input.
`folder_id`	string	Optional	Optional model input.
`prompt`	string	Required	Optional model input.
`audio`	boolean	Optional	Native audio — dialogue, ambient sound, and music generated together with the video. · Default: true
`negative_prompt`	string	Optional	Content to avoid in the video.
`enable_prompt_expansion`	boolean	Optional	Enable intelligent prompt rewriting. · Default: true
`seed`	integer	Optional	Random seed for reproducibility (0-2147483647).
`aspect_ratio`	string	Optional	Allowed: 16:9, 9:16, 1:1, 4:3, 3:4
`resolution`	string	Optional	Allowed: 720p, 1080p
`duration`	number	Optional	Allowed: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
`reference_image_urls`	array<string>	Required	Items: 0–9

Minimal request example

{
  "model_id": "alibaba/happy-horse/reference-to-video",
  "prompt": "Give Happy Horse a reference photo and a prompt — it places your character naturally into any scene with cinematic flair",
  "reference_image_urls": []
}

Raw JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=alibaba%2Fhappy-horse%2Freference-to-video",
  "title": "Happy Horse 1.1 (Reference) generation request",
  "description": "Request body accepted by POST /api/v1/generate for alibaba/happy-horse/reference-to-video.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "alibaba/happy-horse/reference-to-video",
      "description": "ArtEmotion model identifier."
    },
    "extra": {
      "type": "object",
      "additionalProperties": true,
      "description": "Model-specific settings may also be nested here."
    },
    "max_credits": {
      "type": "number",
      "minimum": 1,
      "description": "Reject before submission if the estimated list price exceeds this cap."
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048
    },
    "webhook_secret": {
      "type": "string",
      "maxLength": 512
    },
    "folder_id": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    },
    "audio": {
      "title": "Generate Audio",
      "description": "Native audio — dialogue, ambient sound, and music generated together with the video.",
      "default": true,
      "type": "boolean"
    },
    "negative_prompt": {
      "title": "Negative Prompt",
      "description": "Content to avoid in the video.",
      "type": "string"
    },
    "enable_prompt_expansion": {
      "title": "Enable Prompt Expansion",
      "description": "Enable intelligent prompt rewriting.",
      "default": true,
      "type": "boolean"
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed for reproducibility (0-2147483647).",
      "type": "integer"
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "16:9",
        "9:16",
        "1:1",
        "4:3",
        "3:4"
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "720p",
        "1080p"
      ]
    },
    "duration": {
      "type": "number",
      "enum": [
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15
      ]
    },
    "reference_image_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 9
    }
  },
  "required": [
    "model_id",
    "prompt",
    "reference_image_urls"
  ],
  "additionalProperties": false
}

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FAQ

How much does Happy Horse 1.1 (Reference) cost on ArtEmotion?

Credit-based pricing. You pay in ArtEmotion credits — every plan and top-up converts USD to credits at a fixed rate.

Do I get my credits back if Happy Horse 1.1 (Reference) fails?

Yes — failed generations are never charged. The credits are released back to your balance automatically.

Can I call Happy Horse 1.1 (Reference) from the API?

Yes. Use POST /api/v1/generate with model_id: "alibaba/happy-horse/reference-to-video". See the API reference for the full schema.

Where are my generations stored?

Every output is saved to your personal Library. You can export or delete everything any time from Privacy & deletion.

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