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AI image model
ByteDance
Seedream

Seedream 4.0

Seedream 4.0 / Capabilities — ByteDance Seed: Seedream 4.0. The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Online use is currently unavailable

This page is for reviewing the model's capabilities, use cases, and public references. The model does not appear in the home workbench, and you cannot submit generation tasks with it.

Capabilities
Text-to-image, image-to-image
Current price
No task creation
Prompt limit
5,000 characters
Upload limit
Submission unavailable
30-second overview
  • Seedream 4.0 / Current pricing — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.
  • Seedream 4.0 / Upload limit — Editing accepts up to 10 reference images, while `max_images` requests one to six outputs.
  • Seedream 4.0 / Output resolution — Users can select an image-size preset and 1K, 2K, or 4K output directly.
  • Seedream 4.0 — ByteDance Seed: Seedream 4.0. The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Popular searches: Seedream 4.0 parameter guide · Seedream 4.0 text-to-image · Seedream 4.0 image editing

Examples

Visual concept

Visual concept

Ultra-realistic spring morning portrait of a beautiful young woman sitting barefoot on a wooden window seat beside a large open window, holding a small white blossom in her hand. Soft wavy black shoulder-length hair with a delicate flower tucked behind her ear, natural glass-like skin texture, subtle makeup, realistic facial proportions, gentle dreamy expression, oversized pastel pink-and-lilac knitted cardigan draped over a white camisole and loose cream lounge pants. Outside the window, lush cherry blossom trees in full bloom create a dreamy pink bokeh background. Warm golden sunlight streams through sheer lace curtains, casting soft natural shadows and highlights across the room. Cozy cottage-inspired interior with wooden details, small potted flowers, pastel cushions, peaceful spring atmosphere. Photorealistic, cinematic lifestyle photography, shallow depth of field, soft focus background, HDR lighting, highly detailed skin and hair strands, authentic fabric textures, natural color grading, magazine editorial quality, 85mm lens, f/1.8, 8K resolution, masterpiece, serene and elegant mood, no plastic skin, no CGI look, realistic hands and feet, natural facial features, high-detail eyes, premium photography.* **Negative Prompt:** *plastic skin, doll face, waxy texture, AI artifacts, extra fingers, deformed hands, blurry face, overprocessed beauty filter, exaggerated eyes, low resolution, oversaturated colors, cartoon, anime, CGI, 3D render, bad anatomy, distorted proportions, watermark, text, logo, noise, motion blur.

Visual concept

Visual concept

Visual concept

Visual concept

Ultra-realistic close-up portrait of a beautiful young woman sitting inside a car during golden hour, wearing elegant cream-white over-ear headphones. Soft natural sunlight enters from the side window, casting warm cinematic highlights across her face and oversized white shirt. She has fair porcelain skin, large warm brown eyes, subtle peach-toned makeup, glossy pink lips, and a delicate feminine face. Loose messy dark brown hair with wispy curtain bangs and stray strands falling naturally across her face, creating an effortless candid look. She gazes directly into the camera with a calm, slightly dreamy expression, gently touching her lower lip with her thumb. Oversized textured white button-up shirt draped casually over a black inner top. Interior of a luxury car with dark shadows in the background, window mesh visible, soft evening atmosphere. Natural skin texture, realistic eyes, detailed hair strands, shallow depth of field, soft bokeh, cinematic color grading, warm amber sunlight, high dynamic range, ultra-sharp focus on eyes, professional photography. Camera Settings: 85mm portrait lens, f/1.8, ISO 100, golden hour sunlight, eye-level angle, close-up framing, shallow depth of field, photorealistic, DSLR quality, HDR, 8K, masterpiece, extremely detailed, natural lighting, realistic skin, editorial fashion photography. Negative Prompt: blurry, low quality, extra fingers, deformed hands, cartoon, anime, overprocessed skin, heavy makeup, exaggerated features, oversaturated colors, bad anatomy, duplicate accessories, distorted face, watermark, text, logo, noise, artifacts.

Visual concept

Visual concept

[BRAND NAME]. Act as a Senior 3D Product Visualization Artist and Cinematic Art Director specializing in luxury brand key visuals for high-end editorial and streetwear campaigns. PHASE 1: LOGO SUBJECT Autonomously identify the official, universally recognized logo/logotype of [BRAND NAME]. Reproduce it with maximum fidelity to the original silhouette, proportions, andgeometry — no stylistic distortion, no graffiti interpretation. The logo shape must be instantlyrecognizable as the real [BRAND NAME] mark. Extrude the logo into a solid 3D object with a depth of approximately 15–20% of its height. All surfaces — front face, side extrusion, and beveled edges — must be coated in a single unified material: Surface material: hyper-polished liquid chrome. Reflectance value 0.98 — near-perfect mirror finish. Apply full Ray-Traced environment reflections: the logo must visibly reflect the surrounding sky gradient, flower field, and light sources within its curved and flat surfaces. Bevel radius on all hard edges: moderate (enough to catch sharp specular highlights). Add Subsurface Scattering on the thinnest structural parts of the logo (fine lines, serifs, icon details) to create a subtle inner glow at the edges. Place 4–8 prismatic star-shaped lens-flare sparkles (4-point) at the highest specular peaks — corners, tips, and curved peaks of the logo geometry. The sparkles must feel organic, not uniformly distributed. Zero matte surfaces. Zero plastic look. The entire object must read as cast from liquid silver. PHASE 2: ENVIRONMENT & BACKGROUND Background: a wide cinematic landscape at the golden-lilac hour (just after sunset). A vast flower field fills the lower third — densely packed lavender and white wildflowers with realistic micro-texture and subtle wind motion-blur on the far clusters. Middle ground fades into soft purple-grey bokeh haze. Sky: gradient from warm blush rose (#E8A0BF) at the horizon through lilac (#C3A6D4) to cool powder blue (#A8C4D8) at the top. Add 3–5 loose silhouetted bird clusters (starlings, small and sharp) scattered across the upper left and right quadrants. Volumetric atmospheric haze sits on the horizon line. Autonomously shift the environment's color palette to reflect [BRAND NAME]'s iconic brand identity — introduce the brand's signature hue as a tonal wash in the sky gradient or as the dominant flower color in the field. Preserve the overall ethereal, editorial mood. The environment must feel like it was art-directed specifically for this brand — not generic. PHASE 3: COMPOSITION & LAYOUT Format: 1:1 square. The chrome logo is centered horizontally and placed at the vertical midpoint — monumental in scale, spanning 65–80% of frame width.Apply a subtle forced perspective tilt (2–4 degrees) for dynamic energy without distorting logo recognition. The bottom edge of the logo object grazes or slightly overlaps the top of the flower field, integrating the 3D object naturally into the environment. The logo casts a soft diffused shadow downward into the flowers. Lower-left corner: 2–3 lines of micro-copy in clean white sans-serif at minimal optical size. Autonomously generate a poetic 3-line brand statement relevant to [BRAND NAME]'s world, heritage, and aesthetic language. Bottom-left: "[BRAND NAME]" in small caps logotype label. Bottom-right: a secondary flat 2D chrome version of the same logo rendered small as a finishing mark. PHASE 4: LIGHTING Primary: large soft area light from upper-left simulating post-sunset overcast sky — fully diffused, no hard shadows, color temperature 5800K with a lilac tint overlay. Secondary: warm rim light (3200K) grazing the bottom and side edges of the logo from behind — creates a golden separation halo between the object and the field. Global Illumination enabled — the chrome logo must realistically bounce and absorb the landscape's ambient color. The flower field's purple tones should be faintly visible in the lower reflective surfaces of the logo. Volumetric god rays faintly visible through any negative space or cutouts within the logo geometry. TECH SPECS Render engine: Octane Render aesthetic. Ray Tracing: maximum bounces (16+). Depth of Field: f/11 equivalent — full logo sharp, far background in soft bokeh only. Tone mapping: lifted blacks, compressed highlights, filmic S-curve. Color grade: desaturated midtones, preserved pastels, cool shadow tones. Film grain: subtle (ISO 200 equivalent). Chromatic Aberration: 0.2–0.3px on peripheral logo edges only. Anti-aliasing: maximum. Strictly no AI-plastic normals. No smooth uniform shading. Microscopic surface imperfections on the chrome required for realism (micro-scratches, 0.5% roughness noise map). Mood reference: luxury brand retrospective editorial for Highsnobiety or AnOther Magazine.

Visual concept

Visual concept

生成一张角色卡。图片提示词如下国风女刺客,冷冽气质,超写实肖像,8K高清, 极致细节。年轻女子,面容精致,眼神凌厉冷冽,微侧头回眸看向镜头,表情肃杀疏离。黑发高束,发丝飞散,发饰为黑银色金属发簪与流苏,耳饰为长链条耳坠,多耳洞。身穿黑白渐变古风刺客服饰,白色轻纱与黑色皮革拼接, 肩部有金属环扣与绑带,颈部佩戴黑色项圈。 逆光+侧逆光,发丝与衣料边缘高光明显,背景暗色虚化,冷色调,氛围感强,武侠东方美学,超写实,电影级质感,浅景深,细节丰富, 皮肤质感细腻,睫毛根根分明,眼妆精致,唇色暗红,风轻微吹动发丝。 镜头:85mm定焦镜头,光圈f/1.8 构图:近景人像,三分法构图,人物占画面70% 色彩风格:冷色调(蓝灰为主),低饱和,高对比画面风格:超写实摄影,电影质感,武侠氛围 负面提示词/Negative Prompt 卡通,动漫,3D,CG,插画,低清,模糊,噪点, 过度磨皮,塑料感,失真,畸形手指,多余手指, 脸部扭曲,五官变形,眼睛变形,色彩过艳和饱和, 过曝,穿模,水印,文字,logo,边框,二维码, 拼接图,重复人物,背景杂乱,光线混乱,色彩脏, HDR过度,锐化过度,AI痕迹,假发感,皮肤像蜡

Visual concept

Visual concept

自定义角色,梦幻童话洛丽塔人像,真人写实结合柔和油画插画感,9:16 竖版,花园与浅水倒影场景,前景粉色花朵虚化,中景人物站在花丛中,背景浅蓝天空与奶油色油画云朵。角色穿浅色洛丽塔裙装,蕾丝、薄纱、雪纺、多层纱裙、丝带、花朵装饰,一手撑浅色蕾丝阳伞,一手侧向轻伸,头部微微上扬,眼睛睁开,视线望向上方或远处,眼神柔和放空,表情温柔陶醉。洋娃娃卷发,清透粉白妆容,柔和眼妆,淡粉腮红,玫瑰粉唇。高调柔光,低对比,浅蓝、奶白、淡紫、粉色梦幻配色,油画云朵,蝴蝶点缀,空灵、甜美、浪漫、童话花园氛围。衣服吊牌写“VOXCAT”,自然加入小型“VOX CAT”纹身,左上角 stylized V + 猫元素 logo,右下角签名“voxCAT”,画面干净清晰,特效克制,手部准确,比例正常,细节稳定。

At a glance

Is this model right for you?

Integration — ByteDance Seed: Seedream 4.0. The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

What it does best
Seedream 4.0 / Current price — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.
Who it is for
Seedream 4.0 — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.
Why use it on Kyeo AI
Disabled interface-reference page / Currently disabled — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Key facts

Quickly evaluate whether this model fits your business use case.

Category
AI image model
Vendor
ByteDance
Model family
Seedream
Integration
Site runtime disabled
Runtime
No task creation
Prompt limit
5,000 characters
Upload limit
Submission unavailable

Other names

The same model may have different names in official documentation, community discussions, and API integrations. This section brings them together for you.

Seedream 4.0 text to image
Seedream 4.0 image editing

Common questions

These practical questions focus on the task, input conditions, and result requirements you should confirm before choosing.

Seedream 4.0 parameter guide
Seedream 4.0 text-to-image
Seedream 4.0 image editing
Seedream 4.0 image_resolution
what does Seedream 4.0 max_images mean
Seedream 4.0 vs Seedream 4.5
Seedream 4.0 vs Seedream 5.0 Lite
does Seedream 4.0 support 4K

Decision guide

Still deciding? Start with these key decision points.

1
Disabled interface-reference page · Seedream 4.0

Disabled interface-reference page · Seedream 4.0 — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

2
Compare 4.5 when a quality tier is enough · Seedream 4.0

Compare 4.5 when a quality tier is enough · Seedream 4.0 — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

3
No generation controls are currently displayed · Seedream 4.0

No generation controls are currently displayed · Seedream 4.0 — ByteDance Seed: Seedream 4.0. The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Popular comparisons

Compare common alternatives on the same task to clarify differences in inputs, controls, and cost.

What is the difference between Seedream 4.0 and Seedream 4.5?
Seedream 4.0 vs Seedream 4.5
What is the difference between Seedream 4.0 and Nano Banana Pro?
Seedream 4.0 vs Nano Banana Pro
What is the difference between Seedream 4.0 and Flux 2 Pro?
Seedream 4.0 vs Flux 2 Pro

Model comparison table

Not sure which model to choose? Compare the key differences between this model and its alternatives at a glance.

Workflow scope
Seedream 4.0
Workflow scope — Text-to-Image and image editing
Seedream 4.5
Workflow scope — Seedream 4.5: A currently available alternative in the same category; open its detail page to compare capabilities and pricing.
Key controls
Seedream 4.0
Key controls — image_size, image_resolution, max_images
Seedream 4.5
aspect_ratio, quality
Seedream 5.0 Lite
aspect_ratio, quality
Resolution choices
Seedream 4.0
Resolution choices — Direct 1K / 2K / 4K selection
Seedream 4.5
basic 2K / high 4K tiers
Seedream 5.0 Lite
basic 2K / high 3K tiers
Current pricing
Seedream 4.0
Current pricing — No current task creation or credit deduction
Seedream 4.5
Current pricing — Seedream 4.5: A currently available alternative in the same category; open its detail page to compare capabilities and pricing.
Best-fit workflow
Seedream 4.0
Best-fit workflow — Disabled interface-reference page
Seedream 4.5
Best-fit workflow — Seedream 4.5: A currently available alternative in the same category; open its detail page to compare capabilities and pricing.

Real-world experience

Practical guidance based on public sources, current on-site limits, and representative tasks.

Seedream 4.0 · Compare 4.5 when a quality tier is enough

Seedream 4.0 · Compare 4.5 when a quality tier is enough — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Seedream 4.0 · What matters in a same-brief Seedream comparison

Seedream 4.0 · What matters in a same-brief Seedream comparison — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Capabilities

Disabled interface-reference page

Disabled interface-reference page — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Direct resolution and output-count choices

Direct resolution and output-count choices — Editing accepts up to 10 reference images, while `max_images` requests one to six outputs. Users can select an image-size preset and 1K, 2K, or 4K output directly.

What matters in a same-brief Seedream comparison

What matters in a same-brief Seedream comparison — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Use cases

Seedream 4.0 / Disabled interface-reference page

Seedream 4.0 / Disabled interface-reference page — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Seedream 4.0 / Compare 4.5 when a quality tier is enough

Seedream 4.0 / Compare 4.5 when a quality tier is enough — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Seedream 4.0 / What matters in a same-brief Seedream comparison

Seedream 4.0 / What matters in a same-brief Seedream comparison — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Prompt tips

Disabled interface-reference page / Seedream 4.0

Disabled interface-reference page / Seedream 4.0 — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Compare 4.5 when a quality tier is enough / Seedream 4.0

Compare 4.5 when a quality tier is enough / Seedream 4.0 — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

What matters in a same-brief Seedream comparison / Seedream 4.0

What matters in a same-brief Seedream comparison / Seedream 4.0 — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Why choose it

Image size — Nine size presets and separate 1K, 2K, and 4K choices support varied layouts.
Capabilities / What matters in a same-brief Seedream comparison — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.
Current price — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

What to know first

Seedream 4.0 / Currently disabled — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.
Seedream 4.0 / NSFW check — The optional NSFW check cannot catch every unsuitable result; disabling it does not make content compliant with platform rules or applicable law.
Seedream 4.0 / Currently disabled / What matters in a same-brief Seedream comparison — The practical distinction is not whether 4.0 or 4.5 is universally stronger: 4.0 behaves like the more parameter-rich option, while 4.5 presents a newer entry organized around quality tiers. Explaining that difference is more useful than making a blanket upgrade claim.

Currently unavailable

This page is for reviewing the model's capabilities, use cases, and public references. The model does not appear in the home workbench, and you cannot submit generation tasks with it. Seedream 4.0 / Current price — The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Image size
Optional
Parameter type: Select
Default: square_hd
Square
Square HD
Portrait 4:3
Portrait 3:2
Portrait 16:9
Landscape 4:3
9 options
Output resolution
Optional
Parameter type: Select
Default: 1K
1K
2K
4K
Number of outputs
Optional
Parameter type: Number
Default: 1
Range 1 - 6
Random seed
Optional
Parameter type: Number
Range 0 - 2147483647
NSFW check
Optional
Parameter type: Select
Default: false
Off
On

Frequently asked questions

Related models

Still deciding? Take a quick look at these similar alternatives.

Seedream 4.5

Seedream 4.5 / Capabilities — ByteDance's official Seedream 4.5 material highlights multi-image editing, preservation of reference details, layout, and text rendering. The Kyeo workflow has its own concrete limits: prompts can contain up to 3,000 characters, 8 aspect ratios are available, and editing accepts up to 14 JPG, PNG, or WebP images at 10 MB each. Kyeo AI currently charges a fixed 7 credits per request, with the same price for basic and high. Budget for retries, revisions, and the share of outputs that pass review.

AI image model
7 credits per request

Nano Banana Pro

Nano Banana Pro supports text-to-image generation and reference-image editing on Kyeo AI, with 1K, 2K, or 4K output. Each 1K or 2K request costs 8 credits, while 4K costs 14. Resolution is an output-size tier, not a guarantee of quality, accuracy, or detail.

AI image generation and editing model
8–14 credits per request

Flux 2 Pro

Flux 2 Pro / Capabilities — Flux 2 Pro — Text-to-image and editing use the same resolution pricing: 5 credits for 1K or 7 credits for 2K. 3–5,000 characters; Up to 8 images.

AI image model
5–7 credits per request

Sources

This page is based on vendor materials, model-family documentation, and Kyeo AI integration settings.

Source note

ByteDance Seed: Seedream 4.0. The site runtime is currently disabled, with no generation entry, task creation, or credit deduction.

Last updated: 2026-08-26
ByteDance Seed: Seedream 4.0
Official
Open original source