> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SeeDream 4.5 Launch: BytePlus Volcano Engine's Most Powerful 4K Image Generation Model

> BytePlus Volcano Engine's latest image generation model SeeDream 4.5 is officially released! 1.2B parameter architecture, enhanced 4K image generation capability, significantly improved text rendering, supports up to 10 reference images, priced at just $0.035/image. Official provides 200 free images for testing.

## Key Highlights

* **1.2B Parameter Architecture**: ByteDance's latest unified image generation and editing system
* **4K HD Enhancement**: Significantly improved image quality and detail performance compared to SeeDream 4.0
* **Text Rendering Breakthrough**: Clearer small text rendering, more natural facial features
* **Multi-Image Composition**: Supports up to 10 reference images, maintaining subject consistency
* **Exceptional Value**: \$0.035/image, official provides 200 free images for testing

## Background

On December 4, 2025, BytePlus Volcano Engine officially released **SeeDream 4.5** (model code: `seedream-4-5-251128`), a major upgrade following SeeDream 4.0. As ByteDance's high-quality image generation model, the SeeDream series has been favored by professional designers and content creators for its excellent 4K HD output and visual consistency.

APIYI has established an official strategic partnership with BytePlus Volcano Engine, integrating SeeDream 4.5 at the first opportunity to provide users with stable and reliable service. Compared to previous versions, SeeDream 4.5 achieves comprehensive breakthroughs in image quality, text rendering, multi-image composition, and more, making it an ideal choice for professional design and commercial content creation.

## Detailed Analysis

### Core Features

<CardGroup cols={2}>
  <Card title="4K High-Fidelity Images" icon="sparkles">
    **Comprehensively Enhanced Quality**

    * Supports up to 4K resolution output
    * Richer texture details, clearer layers
    * Significantly enhanced quality compared to 4.0
    * Suitable for professional design and print output
  </Card>

  <Card title="Text Rendering Breakthrough" icon="text">
    **Clear and Readable Text**

    * Significantly improved small text rendering, reduced blurring
    * Clearer facial features, maintaining naturalness
    * Suitable for posters, advertisements, marketing materials
    * Industry-leading text accuracy
  </Card>

  <Card title="Multi-Image Composition Capability" icon="images">
    **Powerful Consistency Control**

    * Supports up to 10 reference images
    * Accurate subject identification, maintaining visual consistency
    * Can generate coherent image series
    * Batch process up to 15 images
  </Card>

  <Card title="Unified Editing System" icon="wand-sparkles">
    **Integrated Generation and Editing**

    * Integrated architecture for image generation and editing
    * Preserves lighting, tone, and details when editing
    * Cross-iteration consistent editing
    * Flexible handling of complex multimodal tasks
  </Card>
</CardGroup>

### Performance Highlights

SeeDream 4.5 is based on a **1.2 billion parameter** deep learning architecture, achieving breakthroughs in multiple key metrics:

<Info>
  **Technical Specifications**

  * **Model Architecture**: 1.2B parameter unified generation-editing system
  * **Maximum Resolution**: 4K (4096×4096)
  * **Reference Images**: Up to 10 images
  * **Batch Processing**: Up to 15 images
  * **Generation Speed**: Average 15 seconds/image
  * **Knowledge Cutoff**: November 2025
</Info>

#### Comparison with SeeDream 4.0

| Feature                 | SeeDream 4.5                        | SeeDream 4.0           |
| ----------------------- | ----------------------------------- | ---------------------- |
| **Image Quality**       | 🔥 4K high-fidelity, richer details | ⭐ 4K HD                |
| **Text Rendering**      | 🔥 Clear small text, no blur        | ⭐ Basic text rendering |
| **Facial Details**      | 🔥 Clear and natural, high fidelity | ⭐ Standard level       |
| **Reference Images**    | 🔥 Up to 10 images                  | ⭐ Standard support     |
| **Batch Processing**    | 🔥 Up to 15 images                  | ⭐ Standard support     |
| **Editing Consistency** | 🔥 Preserves lighting and details   | ⭐ Basic editing        |
| **Price**               | \$0.035/image                       | \$0.03/image           |

### Technical Specifications

SeeDream 4.5 uses standard OpenAI Image API format, fully compatible with existing image generation workflows:

**Supported Size Settings**:

* **Resolution Specs**: "1K", "2K", "4K" - let model automatically decide optimal aspect ratio based on prompt
* **Exact Pixels**: "2048x2048", "1920x1080", "3840x2160", etc.
* **Pixel Range**: \[1280×720, 4096×4096]
* **Aspect Ratio Range**: \[1/16, 16]

**Quality Options**:

* `standard` - Standard quality, faster speed
* `hd` - High-definition quality, richer details

**Return Formats**:

* `url` - Return image URL
* `b64_json` - Return Base64 encoded image data

## Practical Applications

### Recommended Scenarios

SeeDream 4.5 is particularly suitable for the following application scenarios:

<CardGroup cols={2}>
  <Card title="Marketing Materials" icon="megaphone">
    * Poster design (supports clear text)
    * Advertisement banners
    * Social media images
    * Product promotional images
  </Card>

  <Card title="Product Photography" icon="camera">
    * E-commerce product images
    * Product showcase images
    * Contextualized product photography
    * Multi-angle product views
  </Card>

  <Card title="Content Creation" icon="pen-tool">
    * Blog illustrations
    * Article graphics
    * Brand visual design
    * Creative material library
  </Card>

  <Card title="Professional Design" icon="palette">
    * Graphic design
    * UI/UX design references
    * Visual concept art
    * High-resolution print output
  </Card>
</CardGroup>

### Code Example

Here's a complete Python example using SeeDream 4.5:

```python theme={null}
import requests
import base64
import datetime

# API Configuration
API_KEY = "sk-your-api-key"
API_URL = "https://api.apiyi.com/v1/images/generations"

# Generate image
def generate_image(prompt, size="4K", quality="hd"):
    response = requests.post(
        API_URL,
        headers={
            "Content-Type": "application/json",
            "Authorization": f"Bearer {API_KEY}"
        },
        json={
            "model": "seedream-4-5-251128",
            "prompt": prompt,
            "size": size,
            "quality": quality,
            "n": 1,
            "response_format": "url"
        },
        timeout=60
    )

    if response.status_code == 200:
        result = response.json()
        image_url = result["data"][0]["url"]
        print(f"✅ Image generated successfully!")
        print(f"🔗 Image URL: {image_url}")
        return image_url
    else:
        print(f"❌ Generation failed: {response.text}")
        return None

# Usage example
if __name__ == "__main__":
    # Generate marketing poster
    prompt = """
    A modern tech product launch poster with bold typography,
    featuring a sleek smartphone on gradient background,
    text: 'Innovation 2025', 4K, ultra detailed, professional
    """

    generate_image(prompt, size="4K", quality="hd")
```

### Best Practices

**Prompt Optimization Tips**:

1. **Detailed Descriptions**: Provide specific scene, style, color descriptions
2. **Add Quality Tags**: Such as "4K", "ultra detailed", "high quality", "professional"
3. **Specify Style**: Such as "photorealistic", "minimalist", "cinematic"
4. **Include Lighting Info**: Such as "soft lighting", "golden hour", "studio lighting"
5. **Text Content**: Use "text: '...'" to explicitly specify text in images

**Example Prompts**:

✅ **Good Prompt**:

```
A professional product photography of wireless headphones on white background,
soft studio lighting from top-left, subtle shadows, minimal composition,
text: 'Premium Sound', 4K resolution, commercial photography style
```

❌ **Simple Prompt**:

```
headphones on white background
```

<Warning>
  **Usage Limitations**

  * Generation speed: Average 15 seconds/image (4K resolution)
  * Batch processing: Recommended not to exceed 15 images to ensure stability
  * Reference images: Up to 10 images
  * File size: 4K images approximately 3-5 MB
</Warning>

## Pricing and Availability

### Pricing Information

SeeDream 4.5 offers highly competitive pricing at APIYI:

| Version          | APIYI Price       | Official Price | Advantage                               |
| ---------------- | ----------------- | -------------- | --------------------------------------- |
| **SeeDream 4.5** | \$0.035/image     | \$0.03/image+  | 🔥 Best quality, optimal text rendering |
| SeeDream 4.0     | \$0.03/image      | \$0.03/image   | ⭐ Stable and reliable, cost-effective   |
| Nano Banana Pro  | \$0.05/image (4K) | \$0.24/image   | Google tech, 21% discount               |
| Nano Banana      | \$0.02/image      | \$0.04/image   | 10-second fast generation               |

<Info>
  **Pricing Notes**

  * **Billing Method**: Per-image billing, each image billed independently
  * **Top-up Bonus**: Combined with top-up bonus activities, actual cost approximately ¥0.21/image
  * **Free Quota**: Official provides 200 free images for testing
  * **Bulk Discount**: For large-scale usage, contact customer service for enterprise pricing
</Info>

### Promotional Activities

🎁 **Limited Time Offers**:

1. **New User Benefits**:
   * Official provides **200 free images** for testing
   * APIYI offers first-time top-up bonuses

2. **Top-up Bonuses**:
   * Tiered bonuses available (10%-20%), [view details](/faq/recharge-promotions)
   * Enterprise users support B2B payment and invoicing

3. **Cost-Effectiveness Advantage**:
   * Compared to Nano Banana Pro (\$0.05/image), better pricing
   * Stronger text rendering capability, suitable for marketing materials
   * Strong batch processing capability, suitable for mass production

### Purchase Channels

**Get Started with SeeDream 4.5**:

1. **Register Account**: Visit APIYI official website to register
2. **Get API Key**: Create API key in console
3. **Top Up Balance**: Choose appropriate top-up package
4. **Start Calling**: Use standard OpenAI Image API format to call

**Related Resources**:

* APIYI Official Website: `api.apiyi.com`
* Console: `api.apiyi.com/account/profile`
* Detailed Documentation: `docs.apiyi.com/api-capabilities/seedream-image`
* Image Testing Tool: `imagen.apiyi.com`

## Summary and Recommendations

SeeDream 4.5 is another major breakthrough by BytePlus Volcano Engine in the image generation field. The 1.2B parameter unified architecture, enhanced 4K image quality, and breakthrough text rendering capabilities make it an ideal choice for professional design and commercial content creation.

### Usage Recommendations

**Recommended to use SeeDream 4.5**:

* ✅ Need images with clear text (posters, advertisements)
* ✅ Pursue best quality and detail performance
* ✅ Professional design, commercial use
* ✅ Need high-resolution print output
* ✅ Multi-image composition, series image generation

**Can use SeeDream 4.0**:

* ✅ Pursue cost-effectiveness
* ✅ Daily image generation needs
* ✅ Moderate text rendering requirements

**Version Comparison Summary**:

* **Best Quality** → SeeDream 4.5 (\$0.035/image)
* **Cost-Effectiveness** → SeeDream 4.0 (\$0.03/image)
* **Fast Generation** → Nano Banana (\$0.02/image, 10 seconds)

<Info>
  **Data Sources and Release Information**

  * **Official Release**: BytePlus Volcano Engine, December 4, 2025
  * **Model Version**: seedream-4-5-251128
  * **API Documentation**: `docs.byteplus.com/en/docs/ModelArk/1824121`
  * **Technical Parameters**: Based on official documentation and actual testing
  * **Pricing Information**: As of December 4, 2025

  This article's information has been verified through web searches to ensure accuracy and timeliness.
</Info>

***

**Experience SeeDream 4.5 Now**, and start your professional-grade 4K image creation journey!

💡 Visit APIYI official website to get 200 free testing images