Seedream 5.0 API, Seedream 4.5 API, Seedream 4.0 API - AI Image Generation APIs

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.

Get API Key

View in Playground

Models Version

LIMITED TIME OFFER

Get $5 Free Credit on First Payment

No strings attached — add funds and get $5 bonus instantly

Claim Your $5 →

Seedream 5 Image to Image (Image Editing) API Documentation

https://gateway.pixazo.ai/seedream-5-0-lite-edit/v1

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your API subscription key

Seedream 5.0 Lite Edit generate request - Seedream 5.0 Lite Image Edit API

Request Code

POST https://gateway.pixazo.ai/seedream-5-0-lite-edit/v1/seedream-5-0-lite-edit-request
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_SUBSCRIPTION_KEY

{
  "prompt": "add sunglasses to the cat",
  "image_urls": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "image_size": "square_hd",
  "num_images": 1,
  "seed": 42,
  "enable_safety_checker": true
}

import requests

url = "https://gateway.pixazo.ai/seedream-5-0-lite-edit/v1/seedream-5-0-lite-edit-request"
headers = {
    "Content-Type": "application/json",
    "Cache-Control": "no-cache",
    "Ocp-Apim-Subscription-Key": "YOUR_SUBSCRIPTION_KEY"
}
data = {
    "prompt": "add sunglasses to the cat",
    "image_urls": [
        "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
    ],
    "image_size": "square_hd",
    "num_images": 1,
    "seed": 42,
    "enable_safety_checker": True
}

response = requests.post(url, json=data, headers=headers)
print(response.json())

const url = 'https://gateway.pixazo.ai/seedream-5-0-lite-edit/v1/seedream-5-0-lite-edit-request';
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_urls: [
    'https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg'
  ],
  image_size: 'square_hd',
  num_images: 1,
  seed: 42,
  enable_safety_checker: true
};

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-5-0-lite-edit/v1/seedream-5-0-lite-edit-request" \
  -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_urls": ["https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"],
    "image_size": "square_hd",
    "num_images": 1,
    "seed": 42,
    "enable_safety_checker": true
  }'

Output

{
  "request_id": "seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Try Now

Webhook (Optional)

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

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

Request Parameters - Seedream 5.0 Lite Edit generate request

Parameter	Required	Type	Description
prompt	Yes	string	Text instruction describing the edit to apply to the input image(s).
image_urls	Yes	array<string>	One or more publicly accessible image URLs to edit. Must be reachable by the API server. Accepted formats: JPG, JPEG, PNG, WEBP.
image_size	No	string \| object	Output size preset or custom dimensions. Presets: "square_hd", "square", "portrait_4_3", "portrait_16_9", "landscape_4_3", "landscape_16_9". Custom: {"width": 1024, "height": 1024}. Defaults to match input.
num_images	No	integer	Number of images to generate. Range: 1-4. Defaults to 1.
seed	No	integer	Seed for deterministic generation. Use the same seed with the same prompt and image to reproduce results.
enable_safety_checker	No	boolean	When true, activates content safety filtering to block inappropriate or harmful outputs. Defaults to true.

Example Request

{
  "prompt": "add sunglasses to the cat",
  "image_urls": [
    "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/byteplus/1757499948018-hntkjsg9kj.jpg"
  ],
  "image_size": "square_hd",
  "num_images": 1,
  "seed": 42,
  "enable_safety_checker": true
}

Response

{
  "request_id": "seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal 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-5-0-lite-edit' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-0-lite-edit",
  "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-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Response (Completed)

{
  "request_id": "seedream-5-0-lite-edit_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "COMPLETED",
  "model_id": "seedream-5-0-lite-edit",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-0-lite-edit_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

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (image/jpeg or image/png)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

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

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

Seedream 5 Image to Image (Image Editing) API Pricing

Resolution	Price (USD)
All Resolution	$0.035

Seedream 5 Text to Image API Documentation

https://gateway.pixazo.ai/seedream-5-0-lite-text-to-image/v1

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your API subscription key

Seedream 5.0 Lite Text to Image generate request - Seedream 5.0 Lite Text to Image API

Request Code

POST https://gateway.pixazo.ai/seedream-5-0-lite-text-to-image/v1/seedream-5-0-lite-text-to-image-request
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",
  "image_size": "square_hd",
  "num_images": 1,
  "seed": 42,
  "enable_safety_checker": true
}

import requests

url = "https://gateway.pixazo.ai/seedream-5-0-lite-text-to-image/v1/seedream-5-0-lite-text-to-image-request"
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",
    "image_size": "square_hd",
    "num_images": 1,
    "seed": 42,
    "enable_safety_checker": True
}

response = requests.post(url, json=data, headers=headers)
print(response.json())

const url = 'https://gateway.pixazo.ai/seedream-5-0-lite-text-to-image/v1/seedream-5-0-lite-text-to-image-request';
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',
  image_size: 'square_hd',
  num_images: 1,
  seed: 42,
  enable_safety_checker: true
};

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-5-0-lite-text-to-image/v1/seedream-5-0-lite-text-to-image-request" \
  -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",
    "image_size": "square_hd",
    "num_images": 1,
    "seed": 42,
    "enable_safety_checker": true
  }'

Output

{
  "request_id": "seedream-5-0-lite-text-to-image_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-0-lite-text-to-image_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Try Now

Webhook (Optional)

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

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

Request Parameters - Seedream 5.0 Lite Text to Image generate request

Parameter	Required	Type	Description
prompt	Yes	string	Text prompt describing the image to generate. Be specific and descriptive for best results.
image_size	No	string \| object	Size preset or custom dimensions. Presets: "square_hd", "square", "portrait_4_3", "portrait_16_9", "landscape_4_3", "landscape_16_9". Custom: {"width": 1024, "height": 1024}. Defaults to "square_hd".
num_images	No	integer	Number of images to generate. Range: 1-4. Defaults to 1.
seed	No	integer	Seed for deterministic generation. Use the same seed with the same prompt to reproduce results.
enable_safety_checker	No	boolean	When true, activates content safety filtering to block inappropriate or harmful outputs. Defaults to true.

Example Request

{
  "prompt": "a majestic lion in a field of flowers, golden hour lighting, cinematic",
  "image_size": "square_hd",
  "num_images": 1,
  "seed": 42,
  "enable_safety_checker": true
}

Response

{
  "request_id": "seedream-5-0-lite-text-to-image_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "QUEUED",
  "polling_url": "https://gateway.pixazo.ai/v2/requests/status/seedream-5-0-lite-text-to-image_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Request Headers

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal 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-5-0-lite-text-to-image' not found or is disabled"
}

Error via Status/Webhook

{
  "request_id": "seedream-5-0-lite-text-to-image_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "status": "ERROR",
  "model_id": "seedream-5-0-lite-text-to-image",
  "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-5-0-lite-text-to-image_019d9b3e-9e95-75e3-7533-a5f1149cd9f94"

Response (Completed)

{
  "request_id": "seedream-5-0-lite-text-to-image_019d9b3e-9e95-75e3-7533-a5f1149cd9f94",
  "status": "COMPLETED",
  "model_id": "seedream-5-0-lite-text-to-image",
  "error": null,
  "output": {
    "media_url": [
      "https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/seedream-5-0-lite-text-to-image_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

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (image/jpeg or image/png)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

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

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

Seedream 5 Text to Image API Pricing

Resolution	Price (USD)
All Resolution	$0.035

2. Seedream 4.5

Seedream 4.5 Image to Image (Image Editing) API Documentation

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

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your 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"
}

Try Now

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)

Parameter	Required	Type	Description
model	No	string	Model ID. Use `seedream-4-5-251128` for Seedream 4.5, or `seededit-3-0-i2i-250628` for Seededit 3.0.
prompt	Yes	string	Text prompt describing the edit to apply to the image.
image	Yes	string	Publicly accessible URL of the source image, or a Base64 data URL (`data:image/<format>;base64,...`).
size	No	string	Output size. For Seedream 4.5: `2K` or `4K`. Seededit supports `adaptive`.
seed	No	integer	Random seed. Range: [-1, 2147483647]. `-1` (or unset) randomizes.
guidance_scale	No	float	Strength of the prompt vs. the image. Range: [1, 10]. Higher = follow prompt more closely.
response_format	No	string	Deprecated for queue flow — response always contains an R2 URL in `output.media_url`.
watermark	No	boolean	When `true`, adds an "AI-generated" watermark.

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

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal 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

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (image/jpeg)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

Send a request to the API endpoint above
Save the request_id from the response
Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
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 Image to Image (Image Editing) API Pricing

Resolution	Price (USD)
All Resolution	$0.2

Seedream 4.5 Text to Image API Documentation

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

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your 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"
}

Try Now

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

Parameter	Required	Type	Description
model	No	string	Model ID. Use `seedream-4-5-251128` for Seedream 4.5.
prompt	Yes	string	Text prompt describing the image to generate.
size	No	string	Output size. For Seedream 4.5: `2K` or `4K`.
seed	No	integer	Random seed. Range: [-1, 2147483647]. Use the same seed+prompt to reproduce results.
response_format	No	string	Deprecated for queue flow — response always contains an R2 URL in `output.media_url`.
watermark	No	boolean	When `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

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal 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

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (image/jpeg)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

Send a request to the API endpoint above
Save the request_id from the response
Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
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 Text to Image API Pricing

Resolution	Price (USD)
All Resolution	$0.2

3. Seedream 4

Seedream 4 Image to Image (Image Editing — Multi-Ref) API Documentation

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

Authentication

All requests require an API key passed via header.

Header	Type	Required	Description
Ocp-Apim-Subscription-Key	string	Yes	Your 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"
}

Try Now

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

Parameter	Required	Type	Description
prompt	Yes	string	Text prompt describing how to combine or edit the input images.
image	Yes	array<string>	Array of 2+ publicly accessible image URLs to edit together.
model	No	string	Model ID. Defaults to Seedream 4 multi-image edit.
size	No	string	Output size preset (`2K`, `4K`, or `adaptive`).
seed	No	integer	Random seed. Range: [-1, 2147483647].
watermark	No	boolean	When `true`, adds an "AI-generated" watermark.

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

Header	Value
Content-Type	application/json
Cache-Control	no-cache
Ocp-Apim-Subscription-Key	YOUR_SUBSCRIPTION_KEY

Response Handling

Common status codes.

Code	Meaning
202	Accepted — Request queued
400	Bad Request
401	Unauthorized
402	Insufficient Balance
403	Forbidden
429	Too Many Requests
500	Internal 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

Field	Type	Description
request_id	string	Unique request identifier
status	string	QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR
model_id	string	Model that processed the request
error	string\|null	Error message if failed
output.media_url	array	URLs to generated media (R2 CDN)
output.media_type	string	MIME type (image/jpeg)
created_at	string	When request was created
completed_at	string\|null	When request completed
polling_url	string	Status URL (initial response only)

Status Values

Status	Description
QUEUED	Request accepted, waiting to be processed
PROCESSING	Being processed by the model
COMPLETED	Done — output contains the result
FAILED	Failed — check error field
ERROR	System error — not charged

Status Flow

QUEUED → PROCESSING → COMPLETED
                    → FAILED
                    → ERROR

Typical Workflow

Send a request to the API endpoint above
Save the request_id from the response
Poll every 5-10 seconds: GET /v2/requests/status/{request_id}
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 Image to Image (Image Editing — Multi-Ref) API Pricing

Resolution	Price (USD)
All Resolution	$0.2