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ByteDancePrompt guide

Seedream 4.5 Prompt Guide

How to write Seedream 4.5 prompts: a structure that works, 4 example prompts for text to image and image edit, the settings that change the result and how to reference your own media. Copy any prompt into the Studio to try it.

Example prompts
4
2 tasks
Size
4K
2K · 4K
Aspect ratios
8
1:1 · 4:3 · 3:4 · 16:9
Per try from
$0.0309/image
2K
Create with Seedream 4.5Get API keyAPI docs

Try it

Try a prompt on Seedream 4.5

Run the example, then rewrite it with the structure and examples below. The price is on the button; failed runs are refunded.

Open the full-screen Studio

Structure

A Seedream 4.5 prompt, piece by piece

Write in this order and keep each part concrete. Physical detail works better than mood words.

  1. 01

    Subject

    The main subject and its key details: material, colour, expression, product features.

  2. 02

    Composition

    Framing and angle: close-up, flat lay, three-quarter view, rule of thirds, negative space.

  3. 03

    Setting and light

    Background, environment and lighting: studio softbox, golden hour, neon.

  4. 04

    Style

    Photo, illustration, 3D render or painting — plus lens or medium details.

  5. 05

    Edit instruction

    For edits, say what to change and what must stay the same: “replace the background, keep the product and its shadow”.

Examples

Seedream 4.5 prompt examples

Prompts written for this model, grouped by task. Open one in the Studio, then change one part at a time.

  • Text to Image3:4
    Vintage travel poster for Lisbon, bold headline “LISBOA”, tram on a steep street, warm screen-print texture
    Try in Studio
  • Text to Image1:1
    Macro shot of a mechanical watch movement, jewel bearings, shallow depth of field
    Try in Studio
  • Text to Image
    Editorial product photo of a matte-black espresso machine on travertine, soft window light, 85mm
    Try in Studio
  • Image Edit
    Replace the background with a sunlit Mediterranean terrace; keep the product unchanged
    Try in Studio

By task

Prompting each Seedream 4.5 task

Text to Image

Lead with the subject, then composition, setting, light and style. Quote any text that must appear in the image.

Image Edit

Describe the change, not the whole image. Name what must stay untouched so the model keeps it.

Referencing your own media

Seedream 4.5 reference inputs and how to mention them
InputIn the promptLimits and rules
Input images
Image Edit · up to 10
see descriptionUp to 10 images to edit or combine. Refer to them as "image 1", "image 2"… in the prompt.

Settings

Settings that change the result

Set these next to the prompt — in the Studio or as API parameters.

Seedream 4.5 generation settings
SettingOptionsEffect
Aspect ratio
aspect_ratio
1:1 · 4:3 · 3:4 · 16:9 · 9:16 · 3:2 · 2:3 · 21:9
default 1:1
Output image shape.
Size
size
2K · 4K
default 2K
2K ≈ 4 megapixels, 4K ≈ 16 megapixels (same price).
Price: 2K $0.0309/image · 4K $0.0309/image
Seed
seed
—Use the same seed and settings to reproduce a result. Leave empty for random.
Enable Safety Checker
enable_safety_checker
on / off
default true
If set to true, the safety checker will be enabled. Content our Acceptable Use Policy prohibits stays blocked either way.

FAQ

Seedream 4.5 prompting questions

There is no separate negative prompt for Seedream 4.5. Say what you want instead of what you don't, and keep unwanted elements out of the description.

Image Edit: Up to 10 images to edit or combine. Refer to them as "image 1", "image 2"… in the prompt.

Yes — set "seed" to a fixed number and keep the prompt and settings identical. Use the same seed and settings to reproduce a result. Leave empty for random.

Open Seedream 4.5 in the Studio and paste any prompt from this page. Each run shows its exact price before you generate, and failed generations are refunded.