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POST
/
v1
/
images
/
generations
curl --request POST \
  --url https://toapis.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-image",
    "prompt": "An ancient castle under the starry sky",
    "size": "1:1",
    "n": 1
  }'

{
  "id": "task_img_abc123def456",
  "object": "generation.task",
  "model": "gpt-4o-image",
  "status": "queued",
  "progress": 0,
  "created_at": 1703884800,
  "metadata": {}
}

Documentation Index

Fetch the complete documentation index at: https://docs.toapis.com/llms.txt

Use this file to discover all available pages before exploring further.

  • Unified image generation API
  • Use model parameter to select gpt-4o-image model
  • Supports text-to-image, image-to-image, and image editing
  • Async task management, query results by task ID
Important Change: For better performance and cost control, we no longer support passing base64 image data directly in image_urls. Please use the Upload Image API first to upload images and get URLs, then call this endpoint.

​
Authorizations

​
Authorization
string
required
All endpoints require Bearer Token authenticationGet your API Key from the API Key Management PageAdd to request header:
Authorization: Bearer YOUR_API_KEY

​
Body

​
model
string
default:"gpt-4o-image"
required
Image generation model nameExample: "gpt-4o-image"
​
prompt
string
required
Text description for image generationMaximum 1000 characters
​
size
string
default:"1:1"
Image aspect ratioSupported formats:
  • 1:1 - Square (default)
  • 2:3 - Portrait
  • 3:2 - Landscape
​
n
integer
default:1
Number of images to generateSupports 1, 2, 4. Charges will be pre-deducted based on the numberDefault: 1⚠️ Note: Must enter a plain number (e.g., 1), do not use quotes or it will cause an error
​
image_urls
string[]
Reference image URL list for image-to-image or image editing⚠️ URL format only (base64 no longer supported)
  • Publicly accessible image URL (http:// or https://)
  • You can use the Upload Image API to upload local images and get URLs
Limitations:
  • Maximum 5 images
  • Single image up to 10MB
  • Supported formats: jpeg, jpg, png, webp
​
mask_url
string
Mask image URL (for image editing)
  • Must be PNG format
  • Size must match the reference image
  • Maximum 4MB

​
Response

​
id
string
Unique task identifier for status queries
​
object
string
Object type, always generation.task
​
model
string
Model name used
​
status
string
Task status
  • queued - Queued for processing
  • in_progress - Processing
  • completed - Successfully completed
  • failed - Failed
​
progress
integer
Task progress percentage (0-100)
​
created_at
integer
Task creation timestamp (Unix timestamp)
​
metadata
object
Task metadata
curl --request POST \
  --url https://toapis.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-image",
    "prompt": "An ancient castle under the starry sky",
    "size": "1:1",
    "n": 1
  }'

{
  "id": "task_img_abc123def456",
  "object": "generation.task",
  "model": "gpt-4o-image",
  "status": "queued",
  "progress": 0,
  "created_at": 1703884800,
  "metadata": {}
}