bytedance/seedream-4.5 ❓🔢📝🖼️ → 🖼️

⭐ Official ▶️ 1.6M runs 📅 Dec 2025 ⚙️ Cog 0.16.9

image-consistent-character-generation image-to-image text-to-image

About

Seedream 4.5: Upgraded Bytedance image model with stronger spatial understanding and world knowledge

Example Output

Prompt:

"A warm, nostalgic film-style interior of a cozy café, shot on 35mm-inspired digital photography with soft afternoon sunlight filtering through the front windows. Wooden shelves display neatly arranged ceramics, pastries, and coffee beans. Hand-painted signage on the main interior window reads ‘Seedream 4.5’ in clean, classic lettering, similar to boutique branding. A vintage bicycle with a wicker basket is visible outside the entrance, casting soft shadows on the floor. Rich textures, natural light, warm tones, subtle grain, and calm neighborhood-café ambiance."

Output

Performance Metrics

15.19s Prediction Time

15.20s Total Time

All Input Parameters

{
  "size": "4K",
  "width": 2048,
  "height": 2048,
  "prompt": "A warm, nostalgic film-style interior of a cozy café, shot on 35mm-inspired digital photography with soft afternoon sunlight filtering through the front windows. Wooden shelves display neatly arranged ceramics, pastries, and coffee beans. Hand-painted signage on the main interior window reads ‘Seedream 4.5’ in clean, classic lettering, similar to boutique branding. A vintage bicycle with a wicker basket is visible outside the entrance, casting soft shadows on the floor. Rich textures, natural light, warm tones, subtle grain, and calm neighborhood-café ambiance.",
  "max_images": 1,
  "image_input": [],
  "aspect_ratio": "16:9",
  "sequential_image_generation": "disabled"
}

Input Parameters

size Default: 2K: Image resolution: 2K (2048px), 4K (4096px), or 'custom' for specific dimensions. Note: 1K resolution is not supported in Seedream 4.5.
width Type: integerDefault: 2048Range: 1024 - 4096: Custom image width (only used when size='custom'). Range: 1024-4096 pixels.
height Type: integerDefault: 2048Range: 1024 - 4096: Custom image height (only used when size='custom'). Range: 1024-4096 pixels.
prompt (required) Type: string: Text prompt for image generation
max_images Type: integerDefault: 1Range: 1 - 15: Maximum number of images to generate when sequential_image_generation='auto'. Range: 1-15. Total images (input + generated) cannot exceed 15.
image_input Type: arrayDefault:: Input image(s) for image-to-image generation. List of 1-14 images for single or multi-reference generation.
aspect_ratio Default: match_input_image: Image aspect ratio. Only used when size is not 'custom'. Use 'match_input_image' to automatically match the input image's aspect ratio.
sequential_image_generation Default: disabled: Group image generation mode. 'disabled' generates a single image. 'auto' lets the model decide whether to generate multiple related images (e.g., story scenes, character variations).

Output Schema

Output

Type: array • Items Type: string • Items Format: uri

Example Execution Logs

Generating 4096x2304 image with aspect ratio 16:9 at 4K resolution
Generating...
Generated in 14.0sec

Version Details

Version ID: 8356ab00a2acd0f79338ecf1ffa0e32493c6f7cdfc7178b5cfbdb1461202fdc2
Version Created: December 4, 2025

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