Image

Seedream 4.5

Credit-based pricing. Supports batch up to 4.

Try Seedream 4.5 →Compare models

Output

image

Aspect ratio

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

Resolution

2048

Max batch

Inputs

Batch up to 4 per request

Example prompt

Portrait of a young man sitting by a café window, thoughtful expression, natural daylight, realistic skin details, professional lifestyle photography, 4k

Try this prompt →

LLM-ready

API & LLM schema

Exact request contract for this model. Agents can fetch it from /api/v1/models?id=bytedance/seedream-4-5/text-to-image.

POST/api/v1/generate11 fields · 2 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.
`seed`	integer	Optional	Random seed to control the stochasticity of image generation.
`aspect_ratio`	string	Optional	Allowed: 1:1, 16:9, 9:16, 4:3, 3:4
`resolution`	string	Optional	Allowed: 2048
`num_images`	integer	Optional	Range: 1–4

Minimal request example

{
  "model_id": "bytedance/seedream-4-5/text-to-image",
  "prompt": "Portrait of a young man sitting by a café window, thoughtful expression, natural daylight, realistic skin details, professional lifestyle photography, 4k"
}

Raw JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=bytedance%2Fseedream-4-5%2Ftext-to-image",
  "title": "Seedream 4.5 generation request",
  "description": "Request body accepted by POST /api/v1/generate for bytedance/seedream-4-5/text-to-image.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "bytedance/seedream-4-5/text-to-image",
      "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"
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed to control the stochasticity of image generation.",
      "type": "integer"
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "1:1",
        "16:9",
        "9:16",
        "4:3",
        "3:4"
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "2048"
      ]
    },
    "num_images": {
      "type": "integer",
      "minimum": 1,
      "maximum": 4
    }
  },
  "required": [
    "model_id",
    "prompt"
  ],
  "additionalProperties": false
}

Browse schemas for every ArtEmotion model →

FAQ

How much does Seedream 4.5 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 Seedream 4.5 fails?

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

Can I call Seedream 4.5 from the API?

Yes. Use POST /api/v1/generate with model_id: "bytedance/seedream-4-5/text-to-image". 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.

Ready to generate with Seedream 4.5?

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No commitment. New accounts get 50 free credits on signup. See pricing.