Seedream 4.5 API: 4K Generation and Editing
The Seedream 4.5 API brings ByteDance's latest image model to developers through one endpoint. It unifies 4K text-to-image generation with reference-based editing, rendering accurate typography and keeping subjects consistent across up to 10 reference images. Atlas Cloud serves it through an OpenAI compatible API with reliable uptime and transparent pricing at $0.04 per image, no subscription required.
Explore the Leading Seedream 4.5(4)
Peak speed
Lowest cost
| Modality | Description |
|---|---|
| Seedream v4.5 T2I API(Text To Image) | The Seedream v4.5 T2I API enables creators to instantly convert text descriptions into high-fidelity visuals. Featuring PNG output and a fast prompt optimization mode, it streamlines the design process for rapid prototyping, UI/UX conceptualization, and high-speed creative iteration where speed and clarity are paramount. |
| Seedream v4.5 I2I Edit API(Image To Image) | The Seedream v4.5 I2I Edit API provides developers with tools to transform existing images through text prompt and reference images. It allows for seamless style transfers and precise content editing, perfect for iterative design and brand asset customization. |
| Seedream v4.5 T2I Sequential API(Text To Image) | The Seedream v4.5 T2I Sequential API revolutionizes bulk content creation by generating up to 15 related images in a single request. It is optimized for high-volume asset production, storyboard expansion, and comprehensive visual world-building. |
| Seedream v4.5 I2I Edit Sequential API(Image To Image) | The Seedream v4.5 I2I Edit Sequential API empowers users to apply consistent edits across a series of images simultaneously. By processing up to 15 related visuals in a single batch, it ensures visual harmony and style continuity, making it the ideal solution for character design variations, sequence editing, and complex visual storytelling. |
New Features of Seedream 4.5 API
The Seedream 4.5 API combines unified generation and editing, dependable subject consistency, high-fidelity text and spatial rendering, and precise prompt adherence in one 4K image workflow.
Unified Generation & Editing Workflow via Seedream 4.5 API
One request handles both creation and refinement, so the Seedream 4.5 API interprets natural language edits without masks or separate tools. It fits iterative design where composition, color, and elements need rapid adjustment.
Advanced Subject & Style Consistency
If a campaign must keep the same face or product across scenes, the Seedream 4.5 API locks those features from up to 10 reference images. That makes coherent brand and character work dependable.
High-Fidelity Text & Spatial Rendering
Place a red cup to the left of a blue book and the Seedream 4.5 API honors the instruction while rendering crisp, legible typography. Use it for posters, product mockups, and detailed layouts.
Precise Prompt Adherence
Need every subject, layout, and style detail respected? The Seedream 4.5 API tracks complex, multi-part prompts closely, so detailed scenes render exactly as described and reduce repeated reprompting for developers.
Seedream 4.5 vs Other Models - One Prompt
The same prompt, generated by Seedream 4.5 and other leading image models: posters for brand and exhibition
Design a complete brand poster for a boutique coffee brand. Brand name: “MORNING LOOP” Logo concept: A simple circular logo combining a coffee cup and a rising sun. The logo should be clean, minimal, and usable as a real brand mark. Poster content: Main headline: “Fresh Roast, Slow Morning” Small text: “Single Origin Coffee” “Roasted Weekly” “Since 2026” Visual style: Warm beige background, dark brown typography, subtle paper texture, minimal coffee beans, ceramic cup, soft morning sunlight. The logo should appear at the top center. The typography should be balanced and readable. Do not add extra words. Do not distort the brand name. The logo should be simple, not overly detailed.
Seedream 4.5
GPT-image-2
Nano Banana2
Create a minimalist art exhibition poster. Title: “A/W ART FAIR” Main visual: An abstract black line drawing of a human face, placed slightly to the right of center. Small text block at the bottom left: “October 12–18, 2026” “Gallery North, Shanghai” “Contemporary Drawing and Spatial Memory” “Opening Night: 7:30 PM” Style: Off-white paper background, elegant serif typography, black text, lots of negative space, professional gallery poster design. All small text must be readable and correctly spelled. Keep the layout clean and balanced. No extra random text.
Seedream 4.5
GPT-image-2
Nano Banana2
What You Can Do with Seedream 4.5 API
From marketing and e-commerce visuals to poster typography and consistent brand characters, the Seedream 4.5 API turns detailed prompts into commercial-grade 4K assets across every stage of production.
Marketing and E-commerce Visuals
The Seedream 4.5 API generates on-brand product shots, promotional banners, and campaign imagery straight from prompts. Teams can iterate on entire ad sets without a photo shoot or stock library.
Poster and Typography Design
Design posters, packaging, and social graphics where the Seedream 4.5 API renders clean titles, subtitles, and logos in place. This suits designers who need legible typography and clear visual hierarchy in one pass.
Brand Narrative and Character Consistency
Building a story or lookbook that reuses the same character? The Seedream 4.5 API maintains identity across sequential frames, so fashion editorials, comics, and brand suites stay visually unified from image to image.
Model Comparison
See how models from different providers stack up — compare performance, pricing, and unique strengths to make an informed decision.
| Model | Reference Image Limit | Output Num | Resolution | Aspect Ratio |
|---|---|---|---|---|
| Seedream 4.5 | 10 | 1~15 | 1080P~4K+ | Width[1440, 4096]px; Height[1440, 4096]px |
| Seedream 5.0 Lite | 14 | 1~15 | 2K~4K+ | 1:1 3:2 2:3 3:4 4:3 4:5 5:4 9:16 16:9 21:9 |
| Nano Banana 2 | 14 | 1 | 4K, 2K, 1K | 1:1 3:2 2:3 3:4 4:3 4:5 5:4 9:16 16:9 21:9 |
| Qwen-Image | 3 | 1~6 | 512P~2K | Width[512, 2048]px; Height[512, 2048]px |
| Wan 2.6 I2I(Image To Image) | 4 | 1 | 580P~1080P+ | 1:1 3:2 2:3 3:4 4:3 4:5 5:4 9:16 16:9 21:9 9：21 |
How to Use Seedream 4.5 on Atlas Cloud
Get started in minutes — follow these simple steps to integrate and deploy models through Atlas Cloud's platform.
Create an Atlas Cloud Account
Sign up at atlascloud.ai and complete verification. New users receive free credits to explore the platform and test models.
Why Use Seedream 4.5 on Atlas Cloud
Combining the advanced Seedream 4.5 models with Atlas Cloud's GPU-accelerated platform provides unmatched performance, scalability, and developer experience.
Performance & flexibility
Low Latency:
GPU-optimized inference for real-time reasoning.
Unified API:
Run Seedream 4.5, GPT, Gemini, and DeepSeek with one integration.
Transparent Pricing:
Predictable per-token billing with serverless options.
Enterprise & Scale
Developer Experience:
SDKs, analytics, fine-tuning tools, and templates.
Reliability:
99.99% uptime, RBAC, and compliance-ready logging.
Security & Compliance:
SOC 2 Type II, HIPAA alignment, data sovereignty in US.
FAQ about Seedream 4.5 API
The Seedream v4.5 Sequential API allows for the generation of up to 15 related images in a single request, ensuring strict thematic and stylistic consistency across the entire batch.
Yes. Seedream 4.5 features an upgraded typography engine designed to produce crisp, legible, and contextually accurate text in various fonts and languages. This capability addresses a common industry pain point, making it an ideal tool for creating professional posters, book covers, and marketing materials directly.
The Seedream 4.5 API costs $0.04 per generated image on Atlas Cloud, with no subscription required. You pay only for the images you generate, which keeps high-volume workloads such as e-commerce and ad production predictable.
The Seedream 4.5 API generates images up to 4K, with each side ranging from 1440 to 4096 pixels. This span covers social posts, landing page banners, and print-ready marketing assets from a single model.
You can include up to 10 reference images in one Seedream 4.5 API request. The model locks key features such as faces, products, or styles from those references, so subjects stay consistent across every output.
Atlas Cloud exposes the Seedream 4.5 API through a single unified endpoint, so one request schema covers both generation and editing. You send a standard HTTP request with your API key and a prompt, then receive image URLs or encoded data in the response.
Both. The Seedream 4.5 API uses a unified architecture that handles text-to-image generation and image editing through one endpoint. You can create visuals from a prompt or refine existing images with natural language instructions, without routing between separate services.
Create a free Atlas Cloud account, generate an API key, and call the Seedream 4.5 API endpoint from your code or an OpenAI compatible client. The documentation includes ready-to-use request examples so you can ship your first generation in minutes.
Explore More Families
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Grok Imagine
The Grok Imagine API gives developers xAI's image, video, and audio generation in one suite. It produces up to 2K images with multilingual text rendering, plus video up to 15 seconds with native, synchronized audio and reference-based editing. On Atlas Cloud one key runs every Grok Imagine mode, so you move between image, video, and audio without separate setups, from $0.02 per image and $0.05 per second.
Gemini Omni Flash
The Gemini Omni API brings Google DeepMind's multimodal video generation and editing model, introduced at Google I/O 2026, to your stack. Gemini Omni fuses Gemini's reasoning engine with generative media, accepting any mix of text, images, video, and audio to produce consistent, knowledge-grounded output. Refine results through natural conversation, swapping objects, rewriting scenes, and shifting styles while physics, characters, and continuity stay intact. Atlas Cloud serves the full Gemini Omni Flash lineup, text-to-video, image-to-video with up to 7 reference images, and reference-to-video, through one unified API with transparent per-second pricing from $0.112 and no subscription. Start building today.
GPT Image 2
The GPT Image 2 API gives developers access to OpenAI's latest image model, the successor to GPT Image 1.5. It generates and edits images with accurate text rendering across Latin and CJK scripts, plus strong composition for posters, mockups, and infographics. On Atlas Cloud you reach it through one unified API alongside 300+ models, with free credits, 99.99% uptime, and no OpenAI organization verification required.
Google's most powerful creative models are all available on Atlas Cloud. Veo 3.1 delivers cinematic video generation, Nano Banana 2 powers high-fidelity image creation, and Gemini brings multimodal intelligence to every workflow. Access the full Google model suite through one API key with Day-0 availability and pay-as-you-go pricing.
Seedance 2.0 Mini
The Seedance 2.0 Mini API is the lightest, lowest-cost tier of ByteDance's Seedance video line, built for teams where throughput and unit cost matter more than maximum polish. Use it for batch generation, rapid prototyping, and draft passes, all through one OpenAI-compatible key on Atlas Cloud.
ByteDance
From cinematic video generation to high-fidelity image creation, ByteDance's most powerful models are live on Atlas Cloud. Run Seedance and Seedream at scale with the lowest inference pricing and zero infrastructure overhead.
Alibaba
Atlas Cloud brings together Alibaba's full model lineup under one API: Qwen for language and image tasks, Wan for video generation up to 1080p. Access every model pay-as-you-go with no subscriptions. The Alibaba API is available via a single base URL using your existing OpenAI-compatible client.
OpenAI
Atlas Cloud gives you access to the full OpenAI API lineup, from GPT Image 2 for image generation to Sora 2 for video. Every model is available pay-as-you-go with no monthly commitment. Plug in with a single base URL swap using the OpenAI-compatible API.
xAI
Build complete image and video pipelines using the xAI API on Atlas Cloud. Generate at 2K, edit with reference images, and animate images into audio-synced clips.
Kwaivgi
The Kwaivgi API at 15% off standard rates. Day-0 access to every new Kling release, pay-as-you-go, no seat limits. One account covers the full Kling lineup.
Seedream 5.0 Pro
Seedream 5.0 Pro API gives developers ByteDance's controllable image editing model on Atlas Cloud. It places edits precisely with anchors and coordinates, separates images into editable layers, fuses multiple references, and matches exact colors and materials, with multilingual text at 2K and 3K. On Atlas Cloud you reach it through one key!
