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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

At a glance

What is this model like?

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.
Best 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 assess whether this model fits your 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

Also known as

The same model may appear under different names across documentation and community discussions; this list keeps them easy to search and compare.

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

Selection guide

Use these decision points when choosing a model.

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

Compare the current model with 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.

Practical usage insights

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
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
image_resolution
Optional
Parameter type: Select
Default: 1K
1K
2K
4K
Number of outputs
max_images
Optional
Parameter type: Number
Default: 1
Range 1 - 6
Random seed
seed
Optional
Parameter type: Number
Range 0 - 2147483647
NSFW check
nsfw_checker
Optional
Parameter type: Select
Default: false
Off
On

FAQ

Related models

Compare these similar candidates before deciding.

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

Content is based on model documentation, feature references, and the settings available on Kyeo AI.

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
View source