Seedream 5.0 Pro API

Name: EvoLink AI Model API Platform
Brand: EvoLink
Availability: InStock

ByteDance / BytePlus-Image Generation-From ~$0.039 / image for the 1K Seedream 5.0 Pro output rate-Live

Text-to-ImageImage-to-ImageMulti-Reference EditingProduct CreativeCharacter ConsistencyCommercial Image Output

Route state

LiveAsync Task Tracking

Model Highlights

High-fidelity image generation and editing

Use Cases

Ads, social content, product creative, visual concepts

Input

Text prompt with optional image references

Output

Image

Playground Pricing About API

Try Seedream 5.0 Pro before you integrate the API.

Test Seedream 5.0 Pro output quality, estimate credit usage, and generate a sample before you formally integrate.

Create image task

Fixed to doubao-seedream-5.0-pro

Seedream 5.0 Pro$0.039/image - 2.601 cr/image

Prompt

Input images

Upload source or reference images. Each input image is billed.

0/10 files

Size

Quality

Output format

Estimate $0.0392.601 cr

1K quality + auto size + 0 billable input images

Ready

History

Generated Seedream 5.0 Pro tasks will appear here.

Know your testing cost before you add credits.

Start from the cost of a single sample and pick a testing budget. Expand for detailed rates.

First Test Cost

Text-to-Image - 1K - 1:1

1K prompt-only

Credits2.601

One 1K prompt-only image

Approx. Cost$0.039

About 256 tests with $10 in credits.

Iterate prompts in 1K to save credits, then switch to 2K for the final quality check. Each input image is billed when image_urls is present.

Testing Budget Guide

Pick an amount based on how many tests you expect.

Add Credits

$10

About 256 tests

Good for a first validation.

$50

About 1282 tests

Good for prompt iteration.

$100

About 2564 tests

Good before production integration.

Common Cost Examples

Draft iteration1K prompt-only~$0.039

Reference edit1K + one input image~$0.041

Final quality check2K prompt-only~$0.077

Estimated cost for one generated image. Final cost may vary by output quality and input images.

Model Pricing

Item	Rule	Rate	Billing
1K output	Single generated image using the 1K quality tier.	$0.039/image2.601 cr/image	Output image
2K output	Single generated image using the 2K quality tier.	$0.077/image5.202 cr/image	Output image

1K output

Single generated image using the 1K quality tier. - Output image

$0.039/image2.601 cr/image

2K output

Single generated image using the 2K quality tier. - Output image

$0.077/image5.202 cr/image

Optional Add-ons & Billing NotesInput image pricing and live console pricing.

Item	Rule	Rate	Billing
Input images	Applied to each source or reference image in image_urls.	$0.0026/image0.1734 cr/image	Input images

What Seedream 5.0 Pro can create.

Generate high-fidelity images from text prompts or optional reference images, with strong product creative, poster layouts, character sheets, visual concepts, and image editing workflows.

More prompt examples

Input

Text / Image

Output

Image

Size

Auto / ratio / custom pixels

Quality

1K / 2K

Effect Preview

Complex scenes with legible text

Street-level scene with signage and typography rendered readable in place - no post-editing.

Sample output; real results may vary by prompt and settings.

Photoreal people and group scenes

Multiple subjects in one frame with natural expressions and consistent lighting.

Sample output; real results may vary by prompt and settings.

Multi-reference product composition

Bring several product and style references together into one cohesive editorial layout, with every element kept on-brand.

Sample output; real results may vary by prompt and settings.

What You Can Do

Generate Marketing Visuals

Create ads, launch posters, ecommerce hero images, and social creatives from a prompt.

Edit With Reference Images

Guide style, subject consistency, composition, or transformation with image_urls.

Control Size and Quality

Use auto, aspect ratios, or custom pixels for size, and quality for 1K or 2K output clarity.

Track Credit Usage

Return credit and image usage fields for this image-priced route.

Seedream 5.0 Pro vs other image models

Feature	Seedream 5.0 Pro	Nano Banana	GPT Image
Starting price	~$0.039 / image	Lower-cost options	Token or tier based
Output quality	1K / 2K	1K / 2K / 4K by model	Quality tiers
Reference input	Up to 10 images	Model dependent	Supported
Input image billing	Each input billed	Route dependent	Token based
Best for	Ads, product creative, image editing	High-quality image generation	OpenAI image workflows

Starting price

Seedream 5.0 Pro~$0.039 / image

Nano BananaLower-cost options

GPT ImageToken or tier based

Output quality

Seedream 5.0 Pro1K / 2K

Nano Banana1K / 2K / 4K by model

GPT ImageQuality tiers

Reference input

Seedream 5.0 ProUp to 10 images

Nano BananaModel dependent

GPT ImageSupported

Input image billing

Seedream 5.0 ProEach input billed

Nano BananaRoute dependent

GPT ImageToken based

Best for

Seedream 5.0 ProAds, product creative, image editing

Nano BananaHigh-quality image generation

GPT ImageOpenAI image workflows

Key Details

Size controls layout

Use auto for the selected 1K/2K tier, choose aspect ratio presets such as 1:1 and 16:9, or pass custom WIDTHxHEIGHT pixels.

Quality means clarity

Use quality to choose the output tier. 1K is best for testing; 2K is better for final checks.

Each input image is billed

Prompt-only requests pay only the output image rate. Image workflows bill every source or reference image in image_urls.

Why use Seedream 5.0 Pro through EvoLink

Clear Costs Before You Generate

See estimated credits, image input add-ons, and sample cost before you add credits.

Unified API

One API key works across Seedream, Nano Banana, GPT Image, video, audio, and LLM models.

Unified Balance

Track credits, spending, and model usage in one console.

Task Status Tracking

See whether an image task is submitted, processing, completed, or failed.

Production Image Workflows

Test product ads, social content, character references, and editing workflows on one page.

Seedream Model Family

Seedream 5.0 Lite

Lower-cost Seedream 5.0 route for broad image generation and web-search-enhanced creative exploration.

View

Seedream 4.5

Previous Seedream image route for teams that need 2K/4K generation, multi-image editing, and established production behavior.

View

Seedream 4.0

Earlier Seedream image model with broad ratio support and stable text-to-image workflows.

View

Other image models on EvoLink

Nano Banana 2

Google image model for high-quality generation and flexible creative workflows.

View

Nano Banana Pro

Premium Nano Banana route for higher-fidelity images and production-grade output.

View

GPT Image 2

OpenAI image route for prompt, reference, and editing workflows.

View

Qwen Image Edit

Image editing route for direct transformations and localized creative changes.

View

FAQ

How much does Seedream 5.0 Pro cost?

It is billed by output quality tier. A 1K prompt-only image uses the 1K output rate, while 2K uses the higher output rate. Input images are billed per image when image_urls is present.

Can I preview before integrating the API?

Yes. Use the Playground to test output quality, estimate credits, and inspect the request JSON before wiring it into your product.

What is the difference between size and quality?

size controls automatic sizing, aspect ratio, or custom pixels. quality controls the clarity tier, currently 1K or 2K.

Are all input images billed?

Yes. Every input image in image_urls adds the input-image charge.

Does usage include token counts?

No. User-facing usage is credit and image based: credits used, input image count, billable input image count, generated images, and output tier.

Can I generate multiple images with n?

Not yet. Seedream 5.0 Pro is currently opened with n fixed to 1.

Can I use it for image editing?

Yes. Pass image_urls with the prompt when you want source images or references to guide an edit or image-to-image workflow.

What if a generation fails?

Check the task status and error details in the response or console. Failed tasks should not be treated as successful billable generations.

Where do I go after topping up?

Return to the Playground for more tests, or create an API key and use /v1/images/generations with model doubao-seedream-5.0-pro.

API Reference

Select endpoint

Endpoints

Authentication

All APIs require Bearer Token authentication.

Header

Authorization: 
Bearer YOUR_API_KEY

Get API Key

POST

/v1/images/generations

Generate Image

Create an image generation or editing task using text prompts and optional reference images. Supports auto size, 1K/2K output tiers, ratio presets, custom pixel size outputs, and one generated image per request.

Asynchronous processing mode, use the returned task ID to .

Generated image links are valid for 24 hours, please save them promptly.

Request Parameters

modelstringRequiredDefault: doubao-seedream-5.0-pro

Image generation model name.

Value	Description
doubao-seedream-5.0-pro	Seedream 5.0 Pro model

Exampledoubao-seedream-5.0-pro

promptstringRequired

Prompt describing the image to be generated.

Notes

Limited to 2000 tokens

ExampleA serene lake reflecting the beautiful sunset

nintegerOptionalDefault: 1

Maximum number of images to generate.

Value	Description
1	Seedream 5.0 Pro currently supports one generated image per request

Notes

Omit n or set it to 1. Values greater than 1 are rejected.

Example1

sizestringOptionalDefault: auto

Size of generated images. Supports aspect ratios or custom pixel dimensions.

Value	Description
auto	Auto-select output layout for the chosen quality tier
1:1	1K → 1024x1024 · 2K → 2048x2048
4:3	1K → 1184x896 · 2K → 2304x1728
3:4	1K → 896x1184 · 2K → 1728x2304
3:2	1K → 1248x832 · 2K → 2496x1664
2:3	1K → 832x1248 · 2K → 1664x2496
16:9	1K → 1376x768 · 2K → 2560x1440
9:16	1K → 768x1376 · 2K → 1440x2560
4:5	1K → 960x1200 · 2K → 1792x2240
5:4	1K → 1200x960 · 2K → 2240x1792
21:9	1K → 1568x672 · 2K → 3024x1296
WIDTHxHEIGHT	Custom pixel dimensions, e.g. 2048x2048

Notes

Use size=auto to let the model pick the output layout for the selected quality tier
Ratio presets resolve to the exact 1K/2K pixels listed above based on the quality parameter
Custom WIDTHxHEIGHT: total pixels within [1024x1024, 2048x2048], aspect ratio within [1:16, 16:1]
Listed 1K/2K preset pixel values are always accepted; custom output tier is billed from the final pixel count

Exampleauto

qualitystringOptionalDefault: 1K

Output clarity tier. Affects output resolution and billing.

Value	Description
1K	Standard clarity for drafts and first validation
2K	Higher clarity for final quality checks

Example1K

image_urlsarrayOptional

Reference image URL list for image-to-image and image editing.

Notes

Max 10 images per request
Max file size: 30MB per image
Supported formats: .jpeg, .jpg, .png, .webp, .bmp, .tiff, .gif, .heic, .heif
Each input image is billed separately

Example["https://example.com/image1.png"]

model_params.output_formatstringOptionalDefault: jpeg

Output image format. Nested inside model_params object.

Value	Description
jpeg	Compressed format, smaller file size (default)
png	Lossless format

Examplejpeg

callback_urlstringOptional

HTTPS callback address after task completion.

Notes

Triggered on completion, failure, or cancellation
Sent after billing confirmation
HTTPS only, no internal IPs
Max length: 2048 chars
Timeout: 10s, Max 3 retries

Examplehttps://your-domain.com/webhooks/image-task-completed

Examples

Request Example

{
  "model": "doubao-seedream-5.0-pro",
  "prompt": "Create a polished product poster for a premium electric bicycle",
  "size": "auto",
  "quality": "1K",
  "model_params": {
    "output_format": "jpeg"
  },
  "image_urls": [
    "https://example.com/reference-product.png"
  ],
  "callback_url": "https://your-domain.com/webhooks/callback"
}

Response Example

{
  "created": 1772000000,
  "id": "task-unified-1772000000-seedream5pro",
  "model": "doubao-seedream-5.0-pro",
  "object": "image.generation.task",
  "progress": 0,
  "status": "processing",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 30
  },
  "type": "image",
  "usage": {
    "billing_rule": "per_image",
    "credits_reserved": 3.0,
    "user_group": "default"
  }
}

Completed Usage Example

{
  "id": "task-unified-1772000000-seedream5pro",
  "object": "image.generation.task",
  "created": 1772000000,
  "model": "doubao-seedream-5.0-pro",
  "status": "completed",
  "type": "image",
  "progress": 100,
  "results": ["https://cdn.evolink.ai/images/generated-image.jpg"],
  "result_data": [
    {
      "url": "https://cdn.evolink.ai/images/generated-image.jpg",
      "size": "1024x1024",
      "output_format": "jpeg"
    }
  ],
  "usage": {
    "credits_used": 2.9478,
    "input_images": 2,
    "billable_input_images": 2,
    "generated_images": 1,
    "output_tier": "1K",
    "output_pixels": 1048576
  }
}