openai/gpt-image-1.5/image-to-image

Image to Image

OpenAI GPT Image 1.5 edits images while preserving composition, lighting and fine detail, with a high-fidelity mode for faces and products. Use up to 10 reference images and an optional mask, with low to high quality and up to 4 results per call.

Try it Get API keyOpenAPI llms.txt

Prompt *

290 / 32,000

Image URLs *

1 *

Mask Image URL

Image size

More settings (5)

Background

Input Fidelity

Number of Images

Output Format

Quality

ResultExampleSign in to try

Usage-based · about $0.18 / image · $0.18 reserved per request

Example — generated from this input

Change the season to a golden autumn afternoon: turn the oak tree and the grass to warm orange and amber tones, and add a few falling leaves in the air. Keep the five children, their five kites in the same colors and positions, the dog, the town and the illustration style exactly the same.

Pricing

Billed by actual usage; there is no fixed unit price.

Typically about $0.18 per image at default settings.

Each request temporarily reserves $0.18; you are charged for actual usage, usually within a minute: any unused amount is released and any usage above it is charged to your balance, even if that takes it below zero; while your balance is below zero, new requests are paused until a top-up covers it.

Failed generations are not charged.

API

Submit generation requests with this model ID.

POST/v1/model-tasks

openai/gpt-image-1.5/image-to-image

Request body

{
  "model": "openai/gpt-image-1.5/image-to-image",
  "input": {
    "prompt": "Change the season to a golden autumn afternoon: turn the oak tree and the grass to warm orange and amber tones, and add a few falling leaves in the air. Keep the five children, their five kites in the same colors and positions, the dog, the town and the illustration style exactly the same.",
    "background": "auto",
    "image_size": "auto",
    "image_urls": [
      "https://pub-a7287c8d5de944d984e22a5bd3ab9bbe.r2.dev/uploads/capability-demo-c48ef8085869038814f110d85b0aef52.png"
    ],
    "input_fidelity": "high",
    "num_images": 1,
    "output_format": "png",
    "quality": "high"
  }
}

Input schema

Parameter	Type	Requirement	Default
image_urls	array	Required	—
prompt	string	Required	—
background	string	Optional	auto
image_size	string	Optional	auto
input_fidelity	string	Optional	high
mask_image_url	string	Optional	—
num_images	integer	Optional	1
output_format	string	Optional	png
quality	string	Optional	high

Response

The API returns a result or a pollable asynchronous task. See the examples and Schema below for the response mode and result fields.

Asynchronous task

Submit response

HTTP 202

/v1/model-tasksapplication/json

{
  "id": "task_example",
  "model": "openai/gpt-image-1.5/image-to-image",
  "status": "queued"
}

Status response

HTTP 200

/v1/model-tasks/{id}application/json

{
  "id": "task_example",
  "model": "openai/gpt-image-1.5/image-to-image",
  "status": "completed",
  "output": {
    "images": [
      {
        "url": "https://api.musespan.com/v1/model-tasks/task_example/artifacts/0"
      }
    ]
  }
}

File download

HTTP 200

/v1/model-tasks/{id}/artifacts/{index}Generated image (e.g. image/png)

When the task completes, file URLs in output point to this endpoint, numbered from 0. Send the same API key (Authorization header) when downloading.

Error response

HTTP 400

/v1/model-tasksapplication/json

{
  "error": {
    "code": "invalid_input",
    "message": "The input does not match this model's input schema. Check the model's API documentation.",
    "type": "invalid_request_error"
  }
}

Code examples

Async submission returns a task ID. Poll until status is completed, then retrieve the generated content from the result. Get your API key in the console.

# Use a new directory for each new generation. Rerunning here continues this task.
set -eu
test -s model-task-id.txt || python3 -c "import uuid; print(uuid.uuid4())" > model-task-id.txt
REQUEST_ID=$(cat model-task-id.txt)
# Idempotent: resending the same bytes with the same ID never charges twice.
curl --fail-with-body --retry 3 --retry-connrefused --request POST 'https://api.musespan.com/v1/model-tasks' \
  --header "Authorization: Bearer $MUSESPAN_API_KEY" \
  --header "X-Request-Id: $REQUEST_ID" \
  --header "Content-Type: application/json" \
  --data '{"model":"openai/gpt-image-1.5/image-to-image","input":{"prompt":"Change the season to a golden autumn afternoon: turn the oak tree and the grass to warm orange and amber tones, and add a few falling leaves in the air. Keep the five children, their five kites in the same colors and positions, the dog, the town and the illustration style exactly the same.","background":"auto","image_size":"auto","image_urls":["https://pub-a7287c8d5de944d984e22a5bd3ab9bbe.r2.dev/uploads/capability-demo-c48ef8085869038814f110d85b0aef52.png"],"input_fidelity":"high","num_images":1,"output_format":"png","quality":"high"}}'
# Poll every 5 seconds for up to 25 minutes until status is completed or failed.
# Still queued (with queue_position) 5 minutes after submission: failed with queue_timeout, not charged.
# No result 15 minutes after acceptance (or no confirmation 15 minutes after submission): failed with generation_timeout, not charged.
# Any failure is final: generate again in a new directory (a new X-Request-Id).
# A 404 means the POST did not arrive: rerun this script to resend it with the same ID.
curl --fail-with-body 'https://api.musespan.com/v1/model-tasks/'"$REQUEST_ID"'' --header "Authorization: Bearer $MUSESPAN_API_KEY"