Seedream 4.0 (by Bytedance)

Overview

Consistent, reasoning-driven text→image model with high-resolution outputs.

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Quick facts

• Modes: Text → Image · Image → Image (editing)

• Outputs / sizes: 1024×1024 (1:1), 1280×720 (16:9), 720×1280 (9:16) — higher when selecting 2K/4K

• Aspect ratios: 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21

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What it’s great for

• High-detail photoreal images and editorial art.

• High-resolution asset prototyping.

• Image editing and inpainting tasks.

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Example outputs

Shadow study — experimental fashion film still

Cinematic character moment

Detailed environment concept

Copy-and-paste prompts

Experimental fashion film still of a blurred shadow silhouette of a figure with long hair reaching out a hand. The body is partially obscured by tree leaf shadows cast on a white wall, captured in soft diffusion. An interior bedroom wall is bathed in hard daylight, with high-contrast backlight forming abstract silhouettes. Shot on 16mm film with a wide lens, extreme close-up low angle composition, desaturated color palette with subtle grain. The mood is hypnotic, dreamlike, and intimate, evoking trance-like disorientation and fragile presence.

Cool desaturated digital cinematography, a middle-aged Japanese man in a grey t-shirt brushes his teeth at a stainless steel sink. A towel hangs behind him, toothbrush in mouth, framed in a narrow Tokyo apartment bathroom. Artificial fluorescent side light casts cyan tones across metal surfaces, mixing with warm glow from a frosted glass window. Shot on Sony VENICE 2 with Canon K35 wide lens, medium wide clean single, centered composition, naturalistic production design with water heater and simple domestic objects. The mood is intimate and contemplative, evoking solitude and the quiet poetry of daily ritual.

Cinematic landscape film still of furrowed rows of young green crops, vast open field stretching to the horizon. Golden-hour sunset on the right edge throws long shadows and warm amber flare across desaturated earth tones and cool greens. Wide lens, very low ground-level angle with strong leading lines converging toward the sun, deep depth of field. Subtle 16mm grain, gentle halation around the sun, soft vignette. Sky in pastel lavender and peach, horizon thin and distant, mood contemplative, tender, and quietly transcendent, evoking rest after labor and a meditative union with the landscape.

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Parameters (editor-ready)

Name	Type	Default	Notes
Prompt	Text	—	Required
Reference Image	Upload	Optional	Used for edits and variations
Size	Select	Square (1:1)	Square (1:1), Landscape (16:9), Landscape (4:3), Landscape (3:2), Portrait (2:3), Portrait (3:4), Portrait (9:16), Ultra-wide (21:9), Tall (9:21)
Resolution	Select	2K	2K, 4K

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Modes

Mode	Estimated time	Required inputs	Typical use
Text → Image	~25 seconds	Prompt	High-resolution generation
Image → Image	~25 seconds	Reference Image, Prompt	Inpainting & edits

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Output options

Option	Values / notes
Aspect ratio	Square (1:1), Landscape (16:9), Portrait (9:16)
Resolution	2048×2048 (Square), 2048×1152 (Landscape), 1152×2048 (Portrait)

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Prompt tips

• Use photographic tokens for realism.

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