Access Seedream 5.0 Pro (Doubao Seedream 5 Pro) through EvoLink's unified image API. Test text-to-image, multi-reference editing, and Layerize first.
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-proText-to-image, image-to-image and editing. One image per request.
Upload source or reference images. Each input image is billed.
Transparent needs exactly one input image that already has an alpha channel.
Results are kept for 24 hours — download anything you want to keep.
Start from the cost of a single sample and pick a testing budget. Expand for detailed rates.
First Test Cost
Seedream 5.0 Pro - Text-to-Image - 1K - 1 image, no reference imagesOne 1K prompt-only image
About 283 tests with $10 in credits.
In Playground, keep Seedream 5.0 Pro selected, choose the 1K quality tier, leave image_urls empty and generate one image. Iterate in 1K, then switch to 2K for the final check; each input image is billed when image_urls is present.
Seedream 5.0 Pro testing budget guide
Pick an amount based on how many tests you expect.Good for a first validation.
Good for prompt iteration.
Good before production integration.
Estimated cost for one generated image. Final cost may vary by output quality and input images.
doubao-seedream-5.0-pro| Item | Rule | Rate | Billing |
|---|---|---|---|
| 1K / 1.5K output | Single generated image at the 1K or 1.5K quality tier. Both tiers cost the same, so 1.5K is the better pick. | $0.034/image-25% 2.295 cr/image$0.045 official price | Output image |
| 2K output | Single generated image using the 2K quality tier. | $0.068/image-25% 4.59 cr/image$0.090 official price | Output image |
doubao-seedream-5.0-pro-layerize| Item | Rule | Rate | Billing |
|---|---|---|---|
| 1K / 1.5K output | Each image produced by Layer Split at the 1K or 1.5K tier. The official layer-decomposition rate is half the standard generation rate. | $0.018/image-20% 1.224 cr/image$0.023 official price | Output image |
| 2K output | Each image produced by Layer Split at the 2K tier. A run yields one base image plus up to 16 layers, each priced by its own pixel count. | $0.036/image-20% 2.448 cr/image$0.045 official price | Output image |
| Item | Rule | Rate | Billing |
|---|---|---|---|
| Input images | Applied to each source or reference image in image_urls. | $0.0023/image-25% 0.153 cr/image$0.0030 official price | Input images |
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.
doubao-seedream-5.0-proGenerate or edit a flat image from a prompt, with up to 10 reference images, ratio presets or custom pixel sizes, and 1K/1.5K/2K quality tiers.
doubao-seedream-5.0-pro-layerizeSend exactly one PNG or JPEG and get a base image plus up to 16 transparent PNG layers with stacking order and bounding boxes for post-editing.
These fields cover the main integration decisions. Open the API tab for the full request and response schema.
modelstringdoubao-seedream-5.0-pro for generation and editing; doubao-seedream-5.0-pro-layerize for Layer Split.
promptstringDescribe the image. Up to 4000 tokens; under about 600 English words works best.
image_urlsarrayUp to 10 reference images for image-to-image or editing; each input image is billed separately.
sizestringauto, an aspect ratio such as 1:1 or 16:9, or custom WIDTHxHEIGHT pixels.
qualityenum1K, 1.5K or 2K for auto or ratio sizes. 1K and 1.5K share one rate; 2K bills at the higher tier.
output_formatenumjpeg or png. Transparent backgrounds require png.
backgroundenumopaque, or transparent to keep the alpha channel of a single input image.
callback_urlstringHTTPS webhook that receives the task result instead of polling.
Use the EvoLink API for product integration and batch jobs, or call it from Codex, Claude, or Gemini for fast creative and development workflows. Both paths share the same EvoLink API key, balance, model routes, and task history.
Best for: product backends, batch jobs, automated workflows
Call EvoLink’s unified image API from your server and control the model ID, parameters, task queue, callbacks, and result storage.
Best for: creative and development tasks in Codex, Claude, and Gemini
Give the Agent your output goal, assets, and acceptance criteria. It can choose the route, assemble the request, track the task, and return the result without requiring you to hand-code every step.
This example shows the shortest runnable flow: create a task, save the returned task ID, then poll or wait for an HTTPS callback. Open the API tab for the complete parameter and response reference.
curl -X POST https://api.evolink.ai/v1/images/generations \
-H "Authorization: Bearer $EVOLINK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seedream-5.0-pro",
"prompt": "A serene lake reflecting the sunset, editorial photography",
"size": "16:9",
"quality": "2K",
"output_format": "jpeg",
"callback_url": "https://your-domain.com/webhooks/image-task-completed"
}'
# Save the returned task ID, then query:
curl https://api.evolink.ai/v1/tasks/{task_id} \
-H "Authorization: Bearer $EVOLINK_API_KEY"Check every value against the parameter cards above: ranges, allowed options, asset counts, and file types must match the selected route.
Check the Authorization bearer token and confirm the available balance and task billing in the console.
Review likeness rights, brand assets, readable text, sensitive content, and input-asset compliance.
A Seedream 5.0 Pro task that reaches a final failed state is not charged. Keep the task ID, inspect the final state, and identify whether the cause is validation, review, or execution before retrying.
callback_url must be a public HTTPS URL, not localhost or a private network address. Always keep the task ID as a polling fallback.
| Feature | Seedream 5.0 Pro | Nano Banana | GPT Image |
|---|---|---|---|
| Starting price | ~$0.034 / image | Lower-cost options | Token or tier based |
| Output quality | 1K / 1.5K / 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 |
Use auto for the selected 1K/1.5K/2K tier, choose aspect ratio presets such as 1:1 and 16:9, or pass custom WIDTHxHEIGHT pixels.
Use quality to choose the output tier. 1K is best for testing; 2K is better for final checks.
Prompt-only requests pay only the output image rate. Image workflows bill every source or reference image in image_urls.
See estimated credits, image input add-ons, and sample cost before you add credits.
One API key works across Seedream, Nano Banana, GPT Image, video, audio, and LLM models.
Track credits, spending, and model usage in one console.
See whether an image task is submitted, processing, completed, or failed.
Test product ads, social content, character references, and editing workflows on one page.
Compare Seedream generations under one EvoLink account and API key, then choose by fidelity, editing features, speed, and cost.
Seedream 5.0 Flash
Faster Seedream 5.0 route with the same parameters as Pro, one flat per-image price across 1K/1.5K/2K and free reference images.
View API
Seedream 5.0 Lite
Lower-cost Seedream 5.0 route for broad image generation and web-search-enhanced creative exploration.
View API
Seedream 4.5
Previous Seedream image route for teams that need 2K/4K generation, multi-image editing, and established production behavior.
View API
Nano Banana 2
Google image model for high-quality generation and flexible creative workflows.
View API
Nano Banana Pro
Premium Nano Banana route for higher-fidelity images and production-grade output.
View API
Qwen Image Edit
Image editing route for direct transformations and localized creative changes.
View APIThree targeting modes, the async polling flow, and per-image billing worked through with real numbers.
The layer output contract, pricing against BytePlus list, and the workflows it changes.
They are separate models. doubao-seedream-5.0-pro generates or edits a flat image and accepts ratios and custom pixel sizes. doubao-seedream-5.0-pro-layerize takes exactly one PNG or JPEG, accepts quality tiers only, and returns a base image plus up to 16 transparent PNG layers with stacking order and bounding boxes. Use Pro to create an image, Layerize when an existing composition has to be edited afterwards.
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.
Yes. Use the Playground to test output quality, estimate credits, and inspect the request JSON before wiring it into your product.
size controls automatic sizing, aspect ratio, or custom pixels. quality controls the clarity tier, currently 1K or 2K.
Yes. Every input image in image_urls adds the input-image charge.
No. User-facing usage is credit and image based: credits used, input image count, billable input image count, generated images, and output tier.
Not yet. Seedream 5.0 Pro is currently opened with n fixed to 1.
Yes. Pass image_urls with the prompt when you want source images or references to guide an edit or image-to-image workflow.
Check the task status and error details in the response or console. Failed tasks should not be treated as successful billable generations.
Return to the Playground for more tests, or create an API key and use /v1/images/generations with model doubao-seedream-5.0-pro.