Seedream 4.5 is now available on Atlas Cloud: transforming image-generation models from toys into productive tools!
We are proud to introduce BytePlus Seedream v4.5, a comprehensive upgrade now available on Atlas Cloud.
Seedream v4.5 pricing Snapshot:
| Model | Price |
| Seedream v4.5 | $0.036/pic on Atlas Cloud (vs. $0.04 on WaveSpeed). |
| Seedream v4.5/edit | $0.036/pic on Atlas Cloud (vs. $0.04 on WaveSpeed). |
| Seedream v4.5/sequential | $0.036/pic |
| Seedream v4.5/edit-sequential | $0.036/pic |
Introduction of Seedream 4.5
This latest refinement focuses on optimizing user experience by addressing the limitations of Version 4.0. Seedream v4.5 strengthens the model's core performance across aesthetic cohesion, spatial reasoning, and prompt control, making it a powerhouse for sophisticated creative and production workflows worldwide.
Key Features
Superior Aesthetics
Seedream v4.5 produces cinematic visuals with refined lighting and rendering. The model has achieved a significant milestone in portrait photography, specifically optimizing the issue of distorted small faces in high-resolution (2K) outputs.
Case: The Handbag
Prompt: Referring to the model in Figure 1, let her carry the bag in Figure 2 and take a set of 3 commercial advertisements in the scene in Figure 3
Reference:
| Reference 1 | Reference 2 | Reference 3 |
|---|---|---|
 |  |  |
Output:
Higher Consistency
The consistency performance has been comprehensively upgraded. Seedream v4.5 features a powerful "Multi-image combination ability," allowing it to accurately identify and lock the main subject across multiple input images while stably maintaining character continuity.
Case: Three-View Character Sheet
Prompt: Figure 1 refers to the method of Figure 2 to generate a series of diagrams of three views with different title text from three angles: front, side, and back. The text in the first picture is "little flower", and the text in the second picture is "little flower".
Reference:
| Reference 1 | Reference 2 |
|---|---|
 |  |
Output:
| Output 1 | Output 2 | Output 3 |
|---|---|---|
 |  |  |
Smarter Instruction Following
Seedream v4.5 takes prompt adherence to a new level. It accurately responds to complex prompts with precise visual control. This is particularly evident in product selling point images, where the rationality of text typography position and structure has been significantly enhanced.
Stronger Spatial Understanding
The model demonstrates a profound understanding of 3D space, ensuring that object placement and layout are logical. In Gaming scenarios, it improves character consistency in "three-view" generations (front, side, back), keeping color tones consistent and solving high-saturation problems. In E-commerce, specifically for "Try-on" tasks, the rationality of the wearing proportion has been enhanced, ensuring the product fits the model naturally.
Richer World Knowledge
Seedream v4.5 is equipped with a deeper repository of world knowledge, enabling it to generate knowledge-based visuals with accurate scientific and technical reasoning. This makes it ideal for creating "Handmade Journal Picture Books" or educational materials where factual visual accuracy is paramount.
Application of Seedream v4.5
- E-commerce Marketing: Generate product images with consistent details, colors, and brightness. The model now supports better semantic understanding for interactive editing and intelligent outpainting (via separate API).
- Entertainment & Social: Create duet scenes or group still images with improved facial features, and stylized portraits with better skin tone consistency.
- Gaming: Design game props without "overly heavy texture" or smudging, and generate consistent character three-views.
- Design: Professional workflows for interior and architectural design with precise spatial reasoning.
Compare Seedream v4.5 with Seedream v4.0 & Nano Banana Pro
Let's compare the evolution from Seedream v4.0 to Seedream v4.5. Compared to Version 4.0, Seedream 4.5 has achieved a comprehensive upgrade. It specifically addresses issues regarding the structure of small faces, small characters, and the rationality of object proportions. The input capacity has also expanded, now supporting up to 14 input images (up from 10) and a wider aspect ratio range of [1/16, 16].
Cases:
| Input image and prompt | 4.5 | 4.0 | Nano Banana Pro | |
| 1 |  1. Replace the text "快干网膜" in the image with "Quick-drying mesh". 2. Replace the text "轻薄|透气|防晒" in the image with "轻薄|透气|防晒". 3. Replace the text "薄" in the image with "thin". |  |  |  |
| 2 |  Generate a creative ads banner for the ROTTS Diet Supplement.The banner must prominently feature the product, a title, and a catch copy.### Advertising Text* Title: "我慢しない"* Catch Copy: "食後の後悔ゼロへ"### Visual Design* Core Concept: Scientific Nature's Efficacy* Background Scene: A pristine, minimalist laboratory setting with soft, bright lighting. Fresh Terminalia Bellerica and Amla fruits are artfully arranged next to a single, perfect product capsule on a clean white surface, highlighting the product's natural origins and scientific precision.Use extra large font size for the title and large font size for the catch copy. Do NOT use any font effects.Use high-contrast colors for the text to ensure it stands out prominently against the background.Do NOT duplicate any text. The title and catch copy must appear only once each.The title and catch copy must be rendered as a single, unbroken line of text.The text block (title and catch copy) and the product image should be two distinctly separate elements, with no overlap.The product image must be treated as a static asset. Integrate it into the final banner as-is, without any pixel-level alteration. |  |  |  |
 Refer to this picture, keep the character's image and clothing unchanged, and have the character in the picture jump up. |  |  |  |
We can see that compared to Nano Banana Pro and Seedream v4.0, Seedream v4.5 follows user instructions more accurately, generating outputs that are more consistent with real-world logic.
Conclusion
With breakthrough improvements, Seedream 4.5 delivers clearer visuals and smarter multi-image execution. It supports professional workflows for e-commerce, film, advertising, gaming, and design by addressing core performance issues in detail accuracy and aesthetic cohesion.
Experience Seedream 4.5 on Atlas Cloud today.
FAQ
What is Seedream 4.5?
Seedream 4.5 is the latest AI image generation model from BytePlus. It is designed to deliver clearer visuals, more consistent subjects, sharper text rendering, and smarter multi-image execution compared to its predecessor.
What are the key technical updates?
- Resolution: Default generation is 2048*2048. It supports a total pixel value range of [2560*1440, 4096*4096].
- Formats: Supported input formats now include webp, bmp, tiff, gif, heic, and heif, in addition to jpeg and png.
- Speed: Currently, v4.5 supports "standard" mode (no fast mode available).
Can it handle text generation?
Yes, Seedream 4.5 has improved "small text generation" capabilities. While there is still a possibility of breakdown in some complex small text scenarios, the rationality of text typography and structure in product images has been greatly enhanced.
How does it handle multiple images?
It excels at multi-image fusion. It can accurately identify and lock the main subject from up to 14 input images, ensuring character continuity and preserving the lighting and details of the original sources.
