Model Information

Display Name: Seedream 4.0

API Model ID: bytedance/seedream-4.0

Category: Text To Image

Description: ByteDance Seedream 4.0 unifies high-fidelity text-to-image generation with precise single-instruction image editing in a single model. Trained for 4K-class output and strong prompt adherence in both English and Chinese. **Key Features:** - Unified generation + editing in one model - Up to 4K resolution output (provider-dependent) - Strong text rendering across multiple languages - Multi-image input for editing (1-14 images depending on hoster) - Wide aspect ratio support (1:1, 16:9, 9:16, 4:3, 3:4) **Capabilities:** - Photorealistic generation with high prompt fidelity - Object replacement, removal, addition via natural-language edits - Style transfer and aesthetic redesign - Background swap with foreground preservation **Best For:** - Marketing creative iteration - Product mockups and lifestyle shots - E-commerce image refinement - Editorial illustration **Technical Specs:** - Architecture: Diffusion Transformer (ByteDance Seedream family) - Output: up to 4K (2048-2560px largest dim typical) - Input images for edit: 1-14 - License: ByteDance commercial via hosters

How to Use This Model

To use Seedream 4.0 via the HInow.ai API, use the model ID: bytedance/seedream-4.0

API Request Example (Chat/Text)

POST https://api.hinow.ai/v1/chat/completions
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "bytedance/seedream-4.0",
  "messages": [
    {"role": "user", "content": "Your message here"}
  ]
}
              

API Request Example (Image Generation)

POST https://api.hinow.ai/v1/images
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "bytedance/seedream-4.0",
  "prompt": "Your image description here"
}
              

Pricing

• total: $0.05

Available Parameters

• aspect_ratio: Output aspect ratio. All 9 canonical ratios are accepted; if the upstream provider does not natively support a given ratio, the system maps to the closest one. (Options: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, 21:9, 9:21)
• output_format: Output image format. (Options: png, jpeg, webp)
• num_images: Number of images for sequential generation. (Options: 1, 2, 3, 4)

Quick Reference

To use this model, set: "model": "bytedance/seedream-4.0"

Featured: Yes

Documentation: https://hinow.ai/models/bytedance/seedream-4.0

API Endpoint: https://api.hinow.ai/v1