Seedream 4.5
Seedream 4.5 is ByteDance’s upgraded image creation and editing model, designed to deliver higher consistency and fidelity through stronger reference-image preservation, more accurate multi-image editing, and improved typography and dense text rendering for professional visual creative work.
Seedream 4.5 Text to Image API
Describe the image (max 300 Chinese characters or 600 English words)
Resolution preset. The model decides dimensions based on your prompt. Use width/height for custom pixel sizes instead (cannot mix)
Result
Results will appear here
Cost: $0.04/image
Seedream 4.5 API Implementation Guide
Get API Key
Generate your API key from the dashboard and set it as an environment variable.
export MODELHUNTER_KEY="your_api_key"Make Your First Call
Follow the API documentation for complete code examples in cURL, JavaScript, and Python, including request format, polling, and error handling.
View API Documentation →Seedream 4.5 Key Info
Capabilities
- Text to Image API
- Image to Image API
Pricing
Text to Image API
$0.04 / image
$0.04 per image
Image to Image API
$0.04 / image
$0.04 per image
Use Cases
Output Formats
Seedream 4.5 API Documentation
Run the playground first, then open the full API docs for integration details.
About
Latest flagship with multi-image input and streaming
Code Examples
1curl -X POST https://api.modelhunter.ai/api/v1/seedream/text-to-image \2-H "Authorization: Bearer YOUR_API_KEY" \3-H "Content-Type: application/json" \4-d '{5"model": "seedream-4-5",6"input": {7"prompt": "A futuristic cityscape at sunset with neon signs",8"size": "2K"9}10}'
Schema
View Full API DocsInput
modelModel ID for this capability.
Value: seedream-4-5
promptDescribe the image (max 300 Chinese characters or 600 English words)
sizeResolution preset. The model decides dimensions based on your prompt. Use width/height for custom pixel sizes instead (cannot mix)
Options: 2K, 4K
Default: 2K
widthCustom width in pixels (alternative to size preset). Total pixels (w×h) must be in [3,686,400 ~ 16,777,216], aspect ratio in [1:16 ~ 16:1]
heightCustom height in pixels (alternative to size preset). Default: 2048x2048
watermarkWatermark
Default: true
optimize_promptEnhance prompt for better results
Options: standard, fast
response_formatFormat of generated image in output
Options: url
Default: url
webhookUrlURL to receive a webhook notification when the task completes.
metadataCustom key-value metadata to attach to the task for tracking.
Response (HTTP 202)
successWhether the request was accepted successfully.
data.idUnique task ID. Use this to poll GET /api/v1/tasks/{id} for results.
data.statusTask status: pending, processing, completed, failed.
data.typeGeneration type: text-to-image.
data.providerProvider name: seedream.
data.modelModel ID used for generation.
data.created_atISO 8601 timestamp of when the task was created.
data.estimated_secondsEstimated time in seconds until the task completes.