bytedance/seedream-v4-5 models

seedream-v4.5 by Bytedance — AI Model Family

Seedream v4.5 is ByteDance's advanced image generation and editing model family designed for creators, marketers, and content teams who demand high-quality, consistent visuals with superior prompt understanding. The family addresses core creative challenges: maintaining character consistency across multiple images, rendering readable text within generated images, achieving cinematic visual quality, and enabling rapid iteration without tool switching. With native 4K resolution support and unified generation-to-editing workflows, seedream-v4.5 powers professional-grade creative production at scale.

The family comprises two primary model categories: Text to Image for generating images from written descriptions, and Image to Image (Edit) for refining, localizing, and iterating on existing visuals. Both models share a unified architecture, allowing seamless workflows from initial concept to final asset.

seedream-v4.5 Capabilities and Use Cases

Text to Image Model

The Text to Image variant generates original images from natural language prompts with exceptional prompt adherence and visual fidelity. It natively supports 4K resolution output (up to 4096×4096 pixels) without post-processing, while remaining flexible across custom aspect ratios for any platform requirement.

Key capabilities include advanced text rendering—the model excels at generating readable typography, small fonts, and complex layouts, making it ideal for posters, promotional graphics, and designs with embedded copy. Character consistency features allow you to upload up to ten reference photos of a person, and the model learns their distinctive visual identity across angles and features. When generating new scenes, the character remains consistent regardless of clothing, setting, or context changes.

Sample use case: A social media manager could prompt: "Create a product launch poster for our new sneaker line. Include the product name 'AirStep Pro' in bold sans-serif at the top, price '$129.99' centered below, and a call-to-action 'Shop Now' at the bottom. Style: modern, minimalist, with a gradient background transitioning from navy to electric blue." The model renders readable, aesthetically refined text integrated seamlessly into the design.

Image to Image (Edit) Model

The Edit variant refines and transforms existing images through text-based instructions, enabling rapid iteration without restarting from scratch. It supports inpainting (selective region editing), outpainting (expanding canvas), and style transfer, with typical processing times of 15–30 seconds per edit.

This model is invaluable for marketing teams managing multi-channel campaigns. Generate a hero image once, then use the Edit model to localize copy, swap product angles, adjust layouts, or adapt colors for different regional markets—all while maintaining visual consistency and brand identity.

Pipeline integration: Teams can generate a base creative with Text to Image, then iterate using Image to Image for localization, A/B testing, and format adaptation (hero image → banner → social feed → product page) without quality loss.

What Makes seedream-v4.5 Stand Out

Superior Text Rendering and Layout Control

Unlike most image models that struggle with readable text, seedream-v4.5 handles dense typography, small fonts, and complex layouts with graphic-design-level precision. This capability directly addresses a critical pain point for e-commerce, advertising, and promotional content where embedded copy is non-negotiable.

Character and Visual Consistency

The model's identity-learning system goes beyond simple face-swapping. By analyzing multiple reference angles, it understands a character's core visual identity—proportions, features, and presence—enabling consistent storytelling across diverse scenes and contexts. This is essential for brand mascots, character-driven campaigns, and narrative content.

Native 4K Resolution and Adaptive Aspect Ratios

Seedream v4.5 generates sharp, print-ready assets at 4K natively, eliminating upscaling artifacts. Adaptive aspect ratio support means a single generation can be cropped or resized for any platform—feeds, stories, banners, product pages—without redesign or quality degradation.

Unified Generation and Editing Workflow

By combining Text to Image and Image to Image in one model architecture, teams avoid context-switching between tools. This streamlines creative workflows, keeps iteration history in one place, and accelerates time-to-publish for time-sensitive campaigns.

Ideal for: Marketing teams, e-commerce brands, content creators, graphic designers, and agencies requiring fast iteration, consistent brand visuals, and production-ready assets with embedded text.

Access seedream-v4.5 Models via each::labs API

All seedream-v4.5 models—Text to Image and Image to Image—are accessible through a single, unified API on each::labs. Whether you're building a custom application, testing in the interactive Playground, or integrating via SDK, each::labs provides seamless access to the full seedream-v4.5 family without managing multiple provider accounts.

Sign up to explore the full seedream-v4.5 model family on each::labs and accelerate your creative production pipeline.