Pixazo APIModelsSeedream
Pixazo APIModelsSeedream

Seedream 5.0 API, Seedream 4.5 API, Seedream 4.0 API: Pricing, Documentation

by BytePlus

Seedream 5.0 API, developers can access text-to-image generation and advanced image editing features including multi-image editing. The API leverages ByteDance's extensive AI research to deliver high-quality visuals suitable for content creation and commercial applications.

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Seedream AI API
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Models Version

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Seedream 5 Pro API Documentation

  • Premium retouching: background swaps, relighting and cleanup at the highest quality tier.
  • Photorealistic object insertion: composite products or elements seamlessly into scenes.
  • Multi-reference composition: combine up to 10 reference images (e.g. place a product into a new setting).
  • Brand-consistent variations: produce style-matched edits of hero imagery for campaigns.

Base URL

https://gateway.pixazo.ai/seedream-5-pro/v1/edit-image

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 5 Pro Edit generate request - Seedream 5 Pro Image Edit API

Request Code

POST https://gateway.pixazo.ai/seedream-5-pro/v1/edit-image
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "add sunglasses to the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "size": "2K"
}
import requests

url = "https://gateway.pixazo.ai/seedream-5-pro/v1/edit-image"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "add sunglasses to the cat",
    "image": [
        "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
    ],
    "size": "2K"
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/seedream-5-pro/v1/edit-image';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  prompt: 'add sunglasses to the cat',
  image: [
    'https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg'
  ],
  size: '2K'
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/seedream-5-pro/v1/edit-image" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "prompt": "add sunglasses to the cat",
    "image": ["https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"],
    "size": "2K"
  }'

Output

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your submit request to receive a POST callback when the job completes — no polling required.

Using curl? These are HTTP request headers — pass each with -H, e.g. -H "X-Webhook-URL: https://your-server.com/webhook/callback". Do not paste them as bare lines, and end every line of a multi-line command with \.

Webhook Headers

HeaderRequiredDefaultDescription
X-Webhook-URLYes (to enable)HTTPS endpoint on your server that will receive the POST callback. Must respond 2xx within a few seconds (process async if needed).
X-Webhook-ModeNoterminalterminal — fires once at the final status (COMPLETED/FAILED/ERROR). sync — fires on every poll cycle plus the terminal event, and caps the queue’s polling delay at 15s for tighter progress updates.

Example: enable webhook

X-Webhook-URL: https://your-server.com/webhook/callback
X-Webhook-Mode: terminal

Callback Payload

Your endpoint receives a POST application/json with the same shape as the GET /v2/requests/status/{request_id} response. Example terminal callback (mode terminal):

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-pro",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-05-22T13:17:32.110Z",
  "updated_at": "2026-05-22 13:19:23",
  "completed_at": "2026-05-22 13:19:23"
}

Failure callback shape

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-pro",
  "error": "Description of the error",
  "output": null,
  "created_at": "...",
  "updated_at": "...",
  "completed_at": "..."
}

Delivery semantics

  • terminal mode (default) — exactly one POST when the request reaches a terminal status. No callback during PROCESSING.
  • sync modePOST on every status poll (with delay capped at ~15s) plus a final POST at terminal status. Use when you want progress updates.
  • Idempotency — use request_id as your idempotency key. Network retries can deliver the same callback more than once; your handler must tolerate duplicates.
  • Response — respond 200 OK within a few seconds. The queue does not block on slow handlers, but persistent failures may stop further deliveries.
  • HTTPS required — plain http:// URLs are rejected.

Request Parameters - Seedream 5 Pro Edit generate request

ParameterRequiredTypeDefaultAllowed values / rangeDescription
promptYesstringup to ~600 English words (recommended)Text instruction describing the edit to apply to the source image(s). The provider recommends keeping prompts under ~600 English words.
imageYesstring | arrayURL or array of up to 10 URLsSource image(s) to edit — a single public image URL or an array of up to 10 reference-image URLs. Each image: JPEG, PNG, WEBP, BMP, TIFF, GIF or HEIC/HEIF; max 30 MB per file; width and height each > 14 px; total size up to 6000×6000 px; aspect ratio between 1:16 and 16:1.
sizeNostring2K1K, 2KOutput resolution tier.
watermarkNobooleanfalsetrue, falseSet to true to add a small AI-generated watermark to the output image. Off by default.
output_formatNostringjpegpng, jpegEncoding of the generated image. Note: the gateway-hosted result URL always ends in .jpg regardless of format; the encoded bytes match your output_format choice.

Content Item Types & Limits

TypeMaxFormat / SizeDescription
imageJPG, PNG, WEBPImage(s) to edit.

Example Request

{
  "prompt": "add sunglasses to the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "size": "2K"
}

Response

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header Value
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.035"
}
// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'seedream-5-pro' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-pro",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-pro",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-04-17T11:41:07.503Z",
  "updated_at": "2026-04-17T11:42:15.000Z",
  "completed_at": "2026-04-17T11:42:15.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg or image/png)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a generate request to the API endpoint
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use X-Webhook-URL header to get a callback instead of polling.

Seedream 5 Pro API Pricing

ResolutionPrice (USD)
1K$0.0675
2K$0.135
Text to Image

Seedream 5 Pro API Documentation

  • High-fidelity hero images: landing pages, campaigns and key art where detail matters most.
  • Photorealistic product renders: packaging mockups and premium product visuals.
  • Editorial illustration: magazine-quality art for articles and features.
  • Print-ready visuals: 2K output suitable for high-quality print and large display.

Base URL

https://gateway.pixazo.ai/seedream-5-pro/v1/text-to-image

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 5 Pro Text to Image generate request - Seedream 5 Pro Text to Image API

Request Code

POST https://gateway.pixazo.ai/seedream-5-pro/v1/text-to-image
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
  "size": "2K"
}
import requests

url = "https://gateway.pixazo.ai/seedream-5-pro/v1/text-to-image"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
    "size": "2K"
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/seedream-5-pro/v1/text-to-image';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  prompt: 'a majestic lion in a field of flowers, golden hour lighting, cinematic',
  size: '2K'
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/seedream-5-pro/v1/text-to-image" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
    "size": "2K"
  }'

Output

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your submit request to receive a POST callback when the job completes — no polling required.

Using curl? These are HTTP request headers — pass each with -H, e.g. -H "X-Webhook-URL: https://your-server.com/webhook/callback". Do not paste them as bare lines, and end every line of a multi-line command with \.

Webhook Headers

HeaderRequiredDefaultDescription
X-Webhook-URLYes (to enable)HTTPS endpoint on your server that will receive the POST callback. Must respond 2xx within a few seconds (process async if needed).
X-Webhook-ModeNoterminalterminal — fires once at the final status (COMPLETED/FAILED/ERROR). sync — fires on every poll cycle plus the terminal event, and caps the queue’s polling delay at 15s for tighter progress updates.

Example: enable webhook

X-Webhook-URL: https://your-server.com/webhook/callback
X-Webhook-Mode: terminal

Callback Payload

Your endpoint receives a POST application/json with the same shape as the GET /v2/requests/status/{request_id} response. Example terminal callback (mode terminal):

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-pro",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-05-22T13:17:32.110Z",
  "updated_at": "2026-05-22 13:19:23",
  "completed_at": "2026-05-22 13:19:23"
}

Failure callback shape

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-pro",
  "error": "Description of the error",
  "output": null,
  "created_at": "...",
  "updated_at": "...",
  "completed_at": "..."
}

Delivery semantics

  • terminal mode (default) — exactly one POST when the request reaches a terminal status. No callback during PROCESSING.
  • sync modePOST on every status poll (with delay capped at ~15s) plus a final POST at terminal status. Use when you want progress updates.
  • Idempotency — use request_id as your idempotency key. Network retries can deliver the same callback more than once; your handler must tolerate duplicates.
  • Response — respond 200 OK within a few seconds. The queue does not block on slow handlers, but persistent failures may stop further deliveries.
  • HTTPS required — plain http:// URLs are rejected.

Request Parameters - Seedream 5 Pro Text to Image generate request

ParameterRequiredTypeDefaultAllowed values / rangeDescription
promptYesstringup to ~600 English words (recommended)Text prompt describing the image to generate. Be specific and descriptive for best results. The provider recommends keeping prompts under ~600 English words.
sizeNostring2K1K, 2KOutput resolution tier.
watermarkNobooleanfalsetrue, falseSet to true to add a small AI-generated watermark to the output image. Off by default.
output_formatNostringjpegpng, jpegEncoding of the generated image. Note: the gateway-hosted result URL always ends in .jpg regardless of format; the encoded bytes match your output_format choice.

Example Request

{
  "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
  "size": "2K"
}

Response

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header Value
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.035"
}
// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'seedream-5-pro' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-pro_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-pro",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/seedream-5-pro_019d9b3e-9e95-75e3-7533-a5f1149cd9f94"

Response (Completed)

{
  "request_id": "seedream-5-pro_019d9b3e-9e95-75e3-7533-a5f1149cd9f94",
  "status": "COMPLETED",
  "model_id": "seedream-5-pro",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-pro_019d9b3e-9e95-75e3-7533-a5f1149cd9f94/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-04-17T11:41:06.171Z",
  "updated_at": "2026-04-17T11:41:57.000Z",
  "completed_at": "2026-04-17T11:41:57.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg or image/png)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a generate request to the API endpoint
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use X-Webhook-URL header to get a callback instead of polling.

Seedream 5 Pro API Pricing

ResolutionPrice (USD)
1K$0.0675
2K$0.135
2. Seedream 5 Lite

Seedream 5 Lite API Documentation

  • Background replacement: swap or clean up backgrounds with one instruction.
  • Add / remove objects: insert or erase elements described in plain text.
  • Style transfer & relighting: restyle photos or change lighting and mood.
  • Product variants: recolor or restyle a product shot for e-commerce listings.
  • Multi-reference composition: blend up to 14 reference images into one coherent scene (refs + outputs ≤ 15).

Base URL

https://gateway.pixazo.ai/seedream-5-lite/v1/edit-image

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 5 Lite Edit generate request - Seedream 5 Lite Image Edit API

Request Code

POST https://gateway.pixazo.ai/seedream-5-lite/v1/edit-image
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "add sunglasses to the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "size": "2K"
}
import requests

url = "https://gateway.pixazo.ai/seedream-5-lite/v1/edit-image"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "add sunglasses to the cat",
    "image": [
        "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
    ],
    "size": "2K"
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/seedream-5-lite/v1/edit-image';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  prompt: 'add sunglasses to the cat',
  image: [
    'https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg'
  ],
  size: '2K'
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/seedream-5-lite/v1/edit-image" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "prompt": "add sunglasses to the cat",
    "image": ["https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"],
    "size": "2K"
  }'

Output

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your submit request to receive a POST callback when the job completes — no polling required.

Using curl? These are HTTP request headers — pass each with -H, e.g. -H "X-Webhook-URL: https://your-server.com/webhook/callback". Do not paste them as bare lines, and end every line of a multi-line command with \.

Webhook Headers

HeaderRequiredDefaultDescription
X-Webhook-URLYes (to enable)HTTPS endpoint on your server that will receive the POST callback. Must respond 2xx within a few seconds (process async if needed).
X-Webhook-ModeNoterminalterminal — fires once at the final status (COMPLETED/FAILED/ERROR). sync — fires on every poll cycle plus the terminal event, and caps the queue’s polling delay at 15s for tighter progress updates.

Example: enable webhook

X-Webhook-URL: https://your-server.com/webhook/callback
X-Webhook-Mode: terminal

Callback Payload

Your endpoint receives a POST application/json with the same shape as the GET /v2/requests/status/{request_id} response. Example terminal callback (mode terminal):

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-lite",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-05-22T13:17:32.110Z",
  "updated_at": "2026-05-22 13:19:23",
  "completed_at": "2026-05-22 13:19:23"
}

Failure callback shape

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-lite",
  "error": "Description of the error",
  "output": null,
  "created_at": "...",
  "updated_at": "...",
  "completed_at": "..."
}

Delivery semantics

  • terminal mode (default) — exactly one POST when the request reaches a terminal status. No callback during PROCESSING.
  • sync modePOST on every status poll (with delay capped at ~15s) plus a final POST at terminal status. Use when you want progress updates.
  • Idempotency — use request_id as your idempotency key. Network retries can deliver the same callback more than once; your handler must tolerate duplicates.
  • Response — respond 200 OK within a few seconds. The queue does not block on slow handlers, but persistent failures may stop further deliveries.
  • HTTPS required — plain http:// URLs are rejected.

Request Parameters - Seedream 5 Lite Edit generate request

ParameterRequiredTypeDefaultAllowed values / rangeDescription
promptYesstringup to ~600 English words (recommended)Text instruction describing the edit to apply to the source image(s). The provider recommends keeping prompts under ~600 English words.
imageYesstring | arrayURL or array of up to 14 URLsSource image(s) to edit — a single public image URL or an array of up to 14 reference-image URLs. Each image: JPEG, PNG, WEBP, BMP, TIFF, GIF or HEIC/HEIF; max 30 MB per file; width and height each > 14 px; total size up to 6000×6000 px; aspect ratio between 1:16 and 16:1. Reference images + generated output images ≤ 15 per request.
sizeNostring2K2K, 3K, 4KOutput resolution tier.
watermarkNobooleanfalsetrue, falseSet to true to add a small AI-generated watermark to the output image. Off by default.
output_formatNostringjpegpng, jpegEncoding of the generated image. Note: the gateway-hosted result URL always ends in .jpg regardless of format; the encoded bytes match your output_format choice.

Content Item Types & Limits

TypeMaxFormat / SizeDescription
imageJPG, PNG, WEBPImage(s) to edit.

Example Request

{
  "prompt": "add sunglasses to the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "size": "2K"
}

Response

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header Value
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.035"
}
// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'seedream-5-lite' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-lite",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-lite",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-04-17T11:41:07.503Z",
  "updated_at": "2026-04-17T11:42:15.000Z",
  "completed_at": "2026-04-17T11:42:15.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg or image/png)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a generate request to the API endpoint
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use X-Webhook-URL header to get a callback instead of polling.

Seedream 5 Lite API Pricing

Your request will cost $0.035 per image.
Text to Image

Seedream 5 Lite API Documentation

  • Rapid concept art & mood boards: iterate visual ideas quickly (~30–40s per image).
  • Marketing & social creatives at scale: generate campaign and post imagery from copy.
  • E-commerce visuals: product lifestyle shots and category imagery without a studio.
  • Storyboards & keyframes: pre-visualise scenes for video and animation pipelines.
  • Blog & hero illustrations: headers and section art generated from the article brief.

Base URL

https://gateway.pixazo.ai/seedream-5-lite/v1/text-to-image

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 5 Lite Text to Image generate request - Seedream 5 Lite Text to Image API

Request Code

POST https://gateway.pixazo.ai/seedream-5-lite/v1/text-to-image
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
  "size": "2K"
}
import requests

url = "https://gateway.pixazo.ai/seedream-5-lite/v1/text-to-image"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
    "size": "2K"
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/seedream-5-lite/v1/text-to-image';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  prompt: 'a majestic lion in a field of flowers, golden hour lighting, cinematic',
  size: '2K'
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/seedream-5-lite/v1/text-to-image" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
    "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
    "size": "2K"
  }'

Output

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your submit request to receive a POST callback when the job completes — no polling required.

Using curl? These are HTTP request headers — pass each with -H, e.g. -H "X-Webhook-URL: https://your-server.com/webhook/callback". Do not paste them as bare lines, and end every line of a multi-line command with \.

Webhook Headers

HeaderRequiredDefaultDescription
X-Webhook-URLYes (to enable)HTTPS endpoint on your server that will receive the POST callback. Must respond 2xx within a few seconds (process async if needed).
X-Webhook-ModeNoterminalterminal — fires once at the final status (COMPLETED/FAILED/ERROR). sync — fires on every poll cycle plus the terminal event, and caps the queue’s polling delay at 15s for tighter progress updates.

Example: enable webhook

X-Webhook-URL: https://your-server.com/webhook/callback
X-Webhook-Mode: terminal

Callback Payload

Your endpoint receives a POST application/json with the same shape as the GET /v2/requests/status/{request_id} response. Example terminal callback (mode terminal):

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-lite",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-05-22T13:17:32.110Z",
  "updated_at": "2026-05-22 13:19:23",
  "completed_at": "2026-05-22 13:19:23"
}

Failure callback shape

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-lite",
  "error": "Description of the error",
  "output": null,
  "created_at": "...",
  "updated_at": "...",
  "completed_at": "..."
}

Delivery semantics

  • terminal mode (default) — exactly one POST when the request reaches a terminal status. No callback during PROCESSING.
  • sync modePOST on every status poll (with delay capped at ~15s) plus a final POST at terminal status. Use when you want progress updates.
  • Idempotency — use request_id as your idempotency key. Network retries can deliver the same callback more than once; your handler must tolerate duplicates.
  • Response — respond 200 OK within a few seconds. The queue does not block on slow handlers, but persistent failures may stop further deliveries.
  • HTTPS required — plain http:// URLs are rejected.

Request Parameters - Seedream 5 Lite Text to Image generate request

ParameterRequiredTypeDefaultAllowed values / rangeDescription
promptYesstringup to ~600 English words (recommended)Text prompt describing the image to generate. Be specific and descriptive for best results. The provider recommends keeping prompts under ~600 English words.
sizeNostring2K2K, 3K, 4KOutput resolution tier.
watermarkNobooleanfalsetrue, falseSet to true to add a small AI-generated watermark to the output image. Off by default.
output_formatNostringjpegpng, jpegEncoding of the generated image. Note: the gateway-hosted result URL always ends in .jpg regardless of format; the encoded bytes match your output_format choice.

Example Request

{
  "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
  "size": "2K"
}

Response

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header Value
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.035"
}
// 400 — Model not found
{
  "error": "Model not found",
  "message": "Model 'seedream-5-lite' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-lite_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-lite",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/seedream-5-lite_019d9b3e-9e95-75e3-7533-a5f1149cd9f94"

Response (Completed)

{
  "request_id": "seedream-5-lite_019d9b3e-9e95-75e3-7533-a5f1149cd9f94",
  "status": "COMPLETED",
  "model_id": "seedream-5-lite",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-lite_019d9b3e-9e95-75e3-7533-a5f1149cd9f94/output.png"
    ],
    "media_type": "image/png"
  },
  "created_at": "2026-04-17T11:41:06.171Z",
  "updated_at": "2026-04-17T11:41:57.000Z",
  "completed_at": "2026-04-17T11:41:57.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg or image/png)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a generate request to the API endpoint
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use X-Webhook-URL header to get a callback instead of polling.

Seedream 5 Lite API Pricing

Your request will cost $0.035 per image.
3. Seedream 4.5

Seedream 4.5 API Documentation

https://gateway.pixazo.ai/byteplus/v1/getEditImage

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 4.5 Image to Image (Edit Image)

Request Code

POST https://gateway.pixazo.ai/byteplus/v1/getEditImage
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "model": "seedream-4-5-251128",
  "prompt": "Make the cat eye blue",
  "image": "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
  "size": "2K",
  "guidance_scale": 6,
  "seed": 42
}
import requests

url = "https://gateway.pixazo.ai/byteplus/v1/getEditImage"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "model": "seedream-4-5-251128",
    "prompt": "Make the cat eye blue",
    "image": "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
    "size": "2K",
    "guidance_scale": 6,
    "seed": 42
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/byteplus/v1/getEditImage';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  model: "seedream-4-5-251128",
  prompt: "Make the cat eye blue",
  image: "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
  size: "2K",
  guidance_scale: 6,
  seed: 42
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/byteplus/v1/getEditImage" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
  "model": "seedream-4-5-251128",
  "prompt": "Make the cat eye blue",
  "image": "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
  "size": "2K",
  "guidance_scale": 6,
  "seed": 42
}'

Output

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your request to receive a POST callback instead of polling.

X-Webhook-URL: https://your-server.com/webhook/callback

Request Parameters - Seedream 4.5 Image to Image (Edit Image)

ParameterRequiredTypeDefaultAllowed values / rangeDescription
modelNostringModel ID. Use seedream-4-5-251128 for Seedream 4.5, or seededit-3-0-i2i-250628 for Seededit 3.0.
promptYesstringText prompt describing the edit to apply to the image.
imageYesstringThe source image, or a Base64 data URL (data:image/<format>;base64,...).
sizeNostringOutput size. For Seedream 4.5: 2K or 4K. Seededit supports adaptive.
seedNointegerRandom seed. Range: [-1, 2147483647]. -1 (or unset) randomizes.
guidance_scaleNofloatControls how closely the output follows your prompt (prompt adherence). Higher values stick more strictly to the prompt; lower values allow more creative variation.
response_formatNostringDeprecated for queue flow — response always contains an R2 URL in output.media_url.
watermarkNobooleantrue, falseWhen true, adds an "AI-generated" watermark.

Content Item Types & Limits

TypeMaxFormat / SizeDescription
image1JPG, PNG, WEBP · < 10 MBImage to edit.

Example Request

{
  "model": "seedream-4-5-251128",
  "prompt": "Make the cat eye blue",
  "image": "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
  "size": "2K",
  "guidance_scale": 6,
  "seed": 42
}

Response

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

HeaderValue
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.04"
}

Error via Status/Webhook

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "byteplus",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "byteplus",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1776429228529-aq8fsc3s5k7-1.jpg"
    ],
    "media_type": "image/jpeg"
  },
  "created_at": "2026-04-17T12:33:13.000Z",
  "updated_at": "2026-04-17T12:33:13.000Z",
  "completed_at": "2026-04-17T12:33:13.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a request to the API endpoint above
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use the X-Webhook-URL header to receive a callback instead of polling.

Seedream 4.5 API Pricing

Your request will cost $0.20 per image.
Text to Image

Seedream 4.5 API Documentation

https://gateway.pixazo.ai/byteplus/v1/getTextToImage

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 4.5 Text to Image

Request Code

POST https://gateway.pixazo.ai/byteplus/v1/getTextToImage
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "model": "seedream-4-5-251128",
  "prompt": "a fisheye close-up of a cat face, playful dramatic effect",
  "size": "2K",
  "seed": 42
}
import requests

url = "https://gateway.pixazo.ai/byteplus/v1/getTextToImage"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "model": "seedream-4-5-251128",
    "prompt": "a fisheye close-up of a cat face, playful dramatic effect",
    "size": "2K",
    "seed": 42
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/byteplus/v1/getTextToImage';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  model: "seedream-4-5-251128",
  prompt: "a fisheye close-up of a cat face, playful dramatic effect",
  size: "2K",
  seed: 42
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/byteplus/v1/getTextToImage" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
  "model": "seedream-4-5-251128",
  "prompt": "a fisheye close-up of a cat face, playful dramatic effect",
  "size": "2K",
  "seed": 42
}'

Output

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your request to receive a POST callback instead of polling.

X-Webhook-URL: https://your-server.com/webhook/callback

Request Parameters - Seedream 4.5 Text to Image

ParameterRequiredTypeDefaultAllowed values / rangeDescription
modelNostringModel ID. Use seedream-4-5-251128 for Seedream 4.5.
promptYesstringText prompt describing the image to generate.
sizeNostringOutput size. For Seedream 4.5: 2K or 4K.
seedNointegerRandom seed. Range: [-1, 2147483647]. Use the same seed+prompt to reproduce results.
response_formatNostringDeprecated for queue flow — response always contains an R2 URL in output.media_url.
watermarkNobooleantrue, falseWhen true, adds an "AI-generated" watermark.

Example Request

{
  "model": "seedream-4-5-251128",
  "prompt": "a fisheye close-up of a cat face, playful dramatic effect",
  "size": "2K",
  "seed": 42
}

Response

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

HeaderValue
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.04"
}

Error via Status/Webhook

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "byteplus",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "byteplus",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1776429228529-aq8fsc3s5k7-1.jpg"
    ],
    "media_type": "image/jpeg"
  },
  "created_at": "2026-04-17T12:33:13.000Z",
  "updated_at": "2026-04-17T12:33:13.000Z",
  "completed_at": "2026-04-17T12:33:13.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a request to the API endpoint above
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use the X-Webhook-URL header to receive a callback instead of polling.

Seedream 4.5 API Pricing

Your request will cost $0.20 per image.
4. Seedream 4

Seedream 4 API Documentation

https://gateway.pixazo.ai/byteplus/v1/getEditMultiImage

Authentication

All requests require an API key passed via header.

HeaderTypeRequiredDescription
Ocp-Apim-Subscription-KeystringYesYour API subscription key

Seedream 4 Multi-Image Edit

Request Code

POST https://gateway.pixazo.ai/byteplus/v1/getEditMultiImage
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "Girl holding the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/model.png"
  ]
}
import requests

url = "https://gateway.pixazo.ai/byteplus/v1/getEditMultiImage"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "Girl holding the cat",
    "image": ["https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg","https://pub-582b7213209642b9b995c96c95a30381.r2.dev/model.png"]
}

response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = 'https://gateway.pixazo.ai/byteplus/v1/getEditMultiImage';
const headers = {
  'Content-Type': 'application/json',
  'Cache-Control': 'no-cache',
  'Ocp-Apim-Subscription-Key': 'YOUR_SUBSCRIPTION_KEY'
};
const data = {
  prompt: "Girl holding the cat",
  image: ["https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg","https://pub-582b7213209642b9b995c96c95a30381.r2.dev/model.png"]
};

fetch(url, {
  method: 'POST',
  headers: headers,
  body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
curl -X POST "https://gateway.pixazo.ai/byteplus/v1/getEditMultiImage" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY" \
  --data-raw '{
  "prompt": "Girl holding the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/model.png"
  ]
}'

Output

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Webhook (Optional)

Add the X-Webhook-URL header to your request to receive a POST callback instead of polling.

X-Webhook-URL: https://your-server.com/webhook/callback

Request Parameters - Seedream 4 Multi-Image Edit

ParameterRequiredTypeDefaultAllowed values / rangeDescription
promptYesstringText prompt describing how to combine or edit the input images.
imageYesarray<string>Array of 2+ publicly accessible image URLs to edit together.
modelNostringSeedreamModel ID. Defaults to Seedream 4 multi-image edit.
sizeNostringOutput size preset (2K, 4K, or adaptive).
seedNointegerRandom seed. Range: [-1, 2147483647].
watermarkNobooleantrue, falseWhen true, adds an "AI-generated" watermark.

Content Item Types & Limits

TypeMaxFormat / SizeDescription
imageJPG, PNG, WEBP · < 10 MBImages to edit (2+).

Example Request

{
  "prompt": "Girl holding the cat",
  "image": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg",
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/model.png"
  ]
}

Response

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

HeaderValue
Content-Typeapplication/json
Cache-Controlno-cache
Ocp-Apim-Subscription-KeyYOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

CodeMeaning
202Accepted — Request queued
Bad Request
401Unauthorized
402Insufficient Balance
403Forbidden
Too Many Requests
500Internal Server Error

Error Responses

Queue system errors and model validation errors.

Queue System Errors

// 402 — Insufficient balance
{
  "error": "Insufficient Balance",
  "message": "Your wallet does not have enough balance. Required: $0.04"
}

Error via Status/Webhook

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "byteplus",
  "error": "Description of the error",
  "output": null
}

Retrieving Results

Poll the universal status endpoint to check progress and retrieve results.

Endpoint

GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY

cURL Example

curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
  "https://gateway.pixazo.ai/v2/requests/status/byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "byteplus_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "byteplus",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1776429228529-aq8fsc3s5k7-1.jpg"
    ],
    "media_type": "image/jpeg"
  },
  "created_at": "2026-04-17T12:33:13.000Z",
  "updated_at": "2026-04-17T12:33:13.000Z",
  "completed_at": "2026-04-17T12:33:13.000Z"
}

Response Fields

FieldTypeDescription
request_idstringUnique request identifier
statusstringQUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_idstringModel that processed the request
errorstring|nullError message if failed
output.media_urlarrayURLs to generated media (R2 CDN)
output.media_typestringMIME type (image/jpeg)
created_atstringWhen request was created
completed_atstring|nullWhen request completed
polling_urlstringStatus URL (initial response only)

Status Values

StatusDescription
QUEUEDRequest accepted, waiting to be processed
PROCESSINGBeing processed by the model
COMPLETEDDone — output contains the result
FAILEDFailed — check error field
ERRORSystem error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

  1. Send a request to the API endpoint above
  2. Save the request_id from the response
  3. Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
  4. When status is "COMPLETED", download from output.media_url

Tip: Use the X-Webhook-URL header to receive a callback instead of polling.

Seedream 4 API Pricing

Your request will cost $0.20 per image.