Seedream 4.5

Bytedance's best alternative to Nano Banana Pro when you need superior photography, typography, and/or 4K resolution capabilities.

TL;DR

Evolution of Seedream 4.0.

Key Updates:

  • Superior Aesthetics: Produces cinematic visuals with refined lighting and rendering.

  • Higher Consistency: Maintains stable subjects, clear details, and coherent scenes across multiple images.

  • Smarter Instruction Following: Accurately responds to complex prompts with precise visual control and interactive editing.

  • Stronger Spatial Understanding: Generates realistic proportions, object placement, and scene layout.

  • Richer World Knowledge: Creates knowledge-based visuals with accurate scientific and technical reasoning.

  • Deeper Industry Application: Supports professional workflows for e-commerce, film, advertising, gaming, education, interior and architectural design.

Ideal use cases

  • Premium product photography: Sophisticated product staging and professional-grade shoots for catalogs, e-commerce, and high-value marketing materials.

  • Static ads: Professional advertising creatives that require high resolution and polished visual quality.

  • Image editing and asset variations: Transform existing visuals by adding, removing, or modifying elements. Perfect for creating product variations, seasonal updates, or quick asset adaptations without starting from scratch.

  • High-end fashion campaigns: Complex styling, lighting, and composition requirements for luxury brands and premium fashion marketing.

  • Print-quality assets: Marketing materials requiring ultra-high resolution for billboards, magazine ads, packaging, and other print applications.

Weaknesses

  • 4K output increases processing time

  • Requires clear, detailed prompts for best results


Model specs

Inputs accepted

  • Text

  • Text + Multiple reference images

Output characteristics

  • Default Resolution: 1080p

  • Aspect Ratios:

    • Auto 2K, Auto 4K

      • Driven by text prompt when used as text-to-image

      • Driven by reference image(s) when used as image-to-image

    • 1:1 Square

    • 1:1 Square HD (4K - 4096x4096)

    • 3:4 Traditional

    • 4:3 Classic

    • 9:16 Social Story

    • 16:9 Widescreen

    • Custom

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