Seedream 4.5

Text-to-Image • ByteDance • Proxied

Seedream 4.5 builds on 4.0 with multi-reference image support, batch generation, and sequential image generation.

Model Info
More information	link ↗
Pricing	View pricing in the Cloudflare dashboard ↗

Usage

const response = await env.AI.run(
  'bytedance/seedream-4.5',
  {
    prompt:
      'A cozy reading nook with floor-to-ceiling bookshelves and a comfortable armchair',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Output
Raw response

{
  "state": "Completed",
  "result": {
    "images": [
      "https://ark-content-generation-v2-ap-southeast-1.tos-ap-southeast-1.volces.com/seedream-4-5/0217764052077481386b9a8ed856c57501cfa946ce34c9865285c_0.jpeg"
    ]
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Examples

High Resolution — 4K quality image generation

const response = await env.AI.run(
  'bytedance/seedream-4.5',
  {
    prompt:
      'A hyperrealistic still life painting of fresh fruit on an antique wooden table with dramatic chiaroscuro lighting',
    size: '4K',
    aspect_ratio: '4:3',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Output
Raw response

{
  "state": "Completed",
  "result": {
    "images": [
      "https://ark-content-generation-v2-ap-southeast-1.tos-ap-southeast-1.volces.com/seedream-4-5/0217764052077581386b9a8ed856c57501cfa946ce34c985dabe3_0.jpeg"
    ]
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Image-to-Image — Edit using reference images

const response = await env.AI.run(
  'bytedance/seedream-4.5',
  {
    prompt:
      'Transform this scene into a winter wonderland with snow covering everything',
    image_input: [
      'https://replicate.delivery/xezq/0lxxNQSg3NabCZrDiQVAPGVmjP1Q2dd7TgYCOTfI9LpyZaMLA/tmp89gopylq.jpg',
    ],
    aspect_ratio: 'match_input_image',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Output
Raw response

{
  "state": "Completed",
  "result": {
    "images": [
      "https://ark-content-generation-v2-ap-southeast-1.tos-ap-southeast-1.volces.com/seedream-4-5/0217764052176861386b9a8ed856c57501cfa946ce34c98846458_0.jpeg"
    ]
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Sequential Generation — Generate multiple related images

const response = await env.AI.run(
  'bytedance/seedream-4.5',
  {
    prompt:
      'A character design sheet for a fantasy warrior: front view, side view, and back view',
    aspect_ratio: '16:9',
    sequential_image_generation: 'auto',
    max_images: 3,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Output
Raw response

{
  "state": "Completed",
  "result": {
    "images": [
      "https://ark-content-generation-v2-ap-southeast-1.tos-ap-southeast-1.volces.com/seedream-4-5/0217764052291261386b9a8ed856c57501cfa946ce34c98481db1_0.jpeg"
    ]
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Multi-Image Edit — Combine multiple reference images

const response = await env.AI.run(
  'bytedance/seedream-4.5',
  {
    prompt:
      'Combine the style of the first image with the subject from the second image',
    image_input: [
      'https://replicate.delivery/xezq/TRYcLgNMrBpPJVq09ICKXWe4Z8d6olzpK5vtQPOB8O23ZaMLA/tmpaecga26m.jpg',
      'https://replicate.delivery/xezq/1SbAc0aXYXbVD9doyrdCW78hYufVefMsaJXBrETN7Lu2npxsA/tmphvkx7emy.jpg',
    ],
    size: '2K',
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Output
Raw response

{
  "state": "Completed",
  "result": {
    "images": [
      "https://ark-content-generation-v2-ap-southeast-1.tos-ap-southeast-1.volces.com/seedream-4-5/0217764052323791386b9a8ed856c57501cfa946ce34c98b2f132_0.jpeg"
    ]
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

prompt

stringrequired

▶image_input[]

arrayformat: uri

size

stringenum: 2K, 4K

aspect_ratio

stringenum: match_input_image, 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9

sequential_image_generation

stringenum: disabled, auto

max_images

integerminimum: 1maximum: 15

disable_safety_checker

boolean

▶images[]

arrayminItems: 1format: uri

API Schemas (Raw)

Input

Output