ByteDance Seed: Seedream 4.5
bytedance-seed/seedream-4.5
Seedream 4.5 is the latest in-house image generation model developed by ByteDance. Compared with Seedream 4.0, it delivers comprehensive improvements, especially in editing consistency, including better preservation of subject details, lighting, and color tone. It also enhances portrait refinement and small-text rendering. The model’s multi-image composition capabilities have been significantly strengthened, and both reasoning performance and visual aesthetics continue to advance, enabling more accurate and artistically expressive image generation.
Pricing is $0.04 per output image, regardless of size.
Example outputs summary for ByteDance Seed: Seedream 4.5
- Text to Image: Editorial architectural photograph of a contemporary neighborhood storefront at blue hour, glowing warmly against the dusk. Above the entrance, a warm-white neon sign in flowing hand-bent cursive reads exactly "OpenRouter", the only text in the scene. Large windows reveal a cozy, lived-in interior: wood shelves styled with books and ceramics, lush trailing plants, and soft pendant lighting. Potted plants and a bicycle rest by the entrance, and golden light spills across the wet pavement in gentle reflections. Straight-on composition, realistic materials, quiet street with no people. — generated with ByteDance Seed: Seedream 4.5
- Image to Image: Turn this photo into a snowy winter night: snow falling and settling on the sidewalk, the bicycle and the window ledges. Keep the exact composition, the storefront and the glowing neon sign that reads exactly "OpenRouter". — generated with ByteDance Seed: Seedream 4.5
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