Bytedance modelsimage generation api

bytedance/seedream/4.0/edit

Seedream 4.0 Edit is Bytedance's intelligent image editing model. Transform, retouch, and reimagine existing images using text prompts - from background replacement to artistic style conversion.

Input
The text prompt used to edit the image

PNG, JPEG, WebP, or GIF · 20 MiB maximum each

List of URLs of input images for editing. Presently, up to 10 image inputs are allowed. If over 10 images are sent, only the last 10 will be used.
The aspect ratio of the generated image. Allowed values: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16.
Random seed to control the stochasticity of image generation.
Idle

Example output — click Run to generate your own

API README

Bytedance Seedream 4.0 Edit

Bytedance Seedream 4.0 Edit is built for instruction-based image editing that preserves subjects while making substantial visual changes. It gives creative and production teams a focused way to move from an approved brief or source asset to a reviewable result without fragmenting the job across unrelated tools. The model is most valuable when visual intent, brand suitability, and downstream usability all matter, because its output can enter an editorial, campaign, product, or content pipeline as a purposeful asset rather than an isolated experiment.

In practice, teams can use Bytedance Seedream 4.0 Edit during a structured cycle of briefing, generation, comparison, and refinement. Establish the subject, audience, visual objective, and acceptance criteria first; prepare any reference media at suitable quality; then evaluate alternatives for composition, continuity, realism, and communication value before delivery. This workflow keeps creative judgment central while making repeated production easier to review, reproduce, and scale for the specific bytedance/seedream/4.0/edit task.

Highlights

Precise natural-language edits. Precise natural-language edits gives bytedance › seedream › 4.0 › edit a recognizable technical advantage: reviewers can assess this property directly in the generated asset instead of inferring it from request mechanics.

Multi-image reference support. bytedance › seedream › 4.0 › edit applies multi-image reference support to the visual or temporal result itself, helping artists make a meaningful quality decision during selection and refinement.

Character and object consistency. For bytedance › seedream › 4.0 › edit, character and object consistency supports coherent assets across the intended creative workflow and distinguishes this capability from a simple format or delivery option.

High-resolution visual refinement. The practical value of high-resolution visual refinement is visible in the finished media from bytedance › seedream › 4.0 › edit, where it supports repeatable art direction rather than merely exposing another request setting.

Pricing

Billing basisPrice
Per request$0.030000

When to Use

✅ Good fit❌ Consider alternatives
Use it when instruction-based image editing that preserves subjects while making substantial visual changes is the central production goalChoose a different model when the required media task is fundamentally different
The team needs several reviewable creative alternativesExact deterministic reproduction is mandatory
Visual quality and practical downstream use both matterEditable source layers or native project files are required
A managed generation step fits the delivery workflowA live frame-by-frame interactive editor is essential
The documented inputs cover the available source assetsRequired source media or controls fall outside the documented fields

Prompt Guide

State the intended result first, then describe the subject, environment, action, visual treatment, and delivery constraints. Keep instructions concrete, avoid conflicting directions, and change one creative variable at a time when comparing outputs. For source-driven work, describe what should remain recognizable as clearly as what should change.

{
  "images": [
    "https://static.sandbase.ai/examples/bytedance/seedream/4.0/edit/input_images_0.png"
  ],
  "prompt": "Dress the model in the clothes and hat. Add a cat to the scene and change the background to a Victorian era building."
}

Technical Specs

PropertyDetails
seedType / options: integer<br>Required: No<br>Description: Random seed to control the stochasticity of image generation.
imagesType / options: array<br>Required: No<br>Description: List of URLs of input images for editing. Presently, up to 10 image inputs are allowed. If over 10 images are sent, only the last 10 will be used.
promptType / options: string<br>Required: Yes<br>Description: The text prompt used to edit the image
aspect_ratioType / options: string · 21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:16<br>Required: No<br>Description: The aspect ratio of the generated image.

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