ByteDanceFastHigh

Seedream 5 Lite

Seedream 5.0 lite: image generation with built-in reasoning, example-based editing, and deep domain knowledge. Supports multi-reference generation with up to 14 images and sequential batch generation.

82 credits

per image (2K/3K same price; sequential auto bills 81 × max_images)

Example-based editing — show a before/after pair and the model applies the same transformation

Logical reasoning for spatial relationships, physics, and processes

Deep domain knowledge across architecture, science, health, and design

Multi-image blending with up to 14 reference images

Sequential batch generation for storyboards, brand packages, and character sheets

Accurate multi-language text rendering — wrap text in double quotes

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedream-5-lite",
  "input": {
    "prompt": "A Renaissance-style oil painting of a modern-day farmer's market. A woman in a hoodie examines heirloom tomatoes under a striped awning, lit like a Vermeer interior. Warm golden Dutch Golden Age light, every detail unmistakably contemporary",
    "size": "2K",
    "aspect_ratio": "16:9"
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text prompt (max 4000 chars). Keep under 600 English words for best results. Wrap desired in-image text in double quotes
`image_input`	array	No	[]	1-14 input images for single or multi-reference generation
`size`	string	No	2K	Image resolution: 2K (2048px) or 3K (3072px) — same price 2K3K
`aspect_ratio`	string	No	match_input_image	Aspect ratio. 'match_input_image' follows the input image's ratio match_input_image1:14:33:416:99:163:22:321:9
`sequential_image_generation`	string	No	disabled	'disabled' generates one image; 'auto' lets the model emit multiple related images (billed per image) disabledauto
`max_images`	integer	No	1	Max images when sequential mode is 'auto' (1-15). Input + generated cannot exceed 15
`output_format`	string	No	png	Output image format pngjpeg

How to Provide File Input

There are 3 ways to provide files for the image_input parameter:

Recommended

Direct Upload (Multipart)

Attach files directly to POST /v1/predictions/upload. No separate upload step needed.

curl -X POST "https://api.core.today/v1/predictions/upload" \
  -H "X-API-Key: cdt_your_api_key" \
  -F "model=bytedance/seedream-5-lite" \
  -F 'input={"prompt":"your prompt here"}' \
  -F "file:image_input=@your_file.png"

Image URL

Pass a publicly accessible URL directly. You can also use file_url from the Storage API.

{
  "model": "bytedance/seedream-5-lite",
  "input": {
    "prompt": "your prompt here",
    "image_input": ["https://example.com/image.jpg"]
  }
}

See the File Upload docs for more upload methods including Presigned URLs.

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Reasoned Scene Generation

Complex contemporary scene rendered in a classical painting style

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedream-5-lite",
  "input": {
    "prompt": "A Renaissance-style oil painting of a modern-day farmer's market. A woman in a hoodie examines heirloom tomatoes under a striped awning, lit like a Vermeer interior. Warm golden Dutch Golden Age light, every detail unmistakably contemporary",
    "size": "2K",
    "aspect_ratio": "16:9"
  }
}'

Typographic Poster

Multi-line text rendering with precise typography

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedream-5-lite",
  "input": {
    "prompt": "A large-format typographic poster for a jazz festival. At the top in bold condensed sans-serif: \"BLUE NOTE SESSIONS\" in deep navy. Below in elegant script: \"Summer 2026 — Central Park, New York.\" A golden saxophone silhouette runs along the right edge",
    "size": "2K",
    "aspect_ratio": "2:3"
  }
}'