# GPT Image 1.5

> OpenAI's latest image generation model with better instruction following and adherence to prompts.

- **Provider**: replicate
- **Model ID**: openai/gpt-image-1.5
- **Category**: image_generation
- **Credits**: 310 per request
- **Pricing Type**: input_based

## API Endpoint

Base URL: https://api.core.today/v1

### Create Prediction
POST /predictions

### Get Status
GET /predictions/{job_id}

### Cancel
DELETE /predictions/{job_id}

## Authentication

Header: `X-API-Key: YOUR_API_KEY`

## Input Parameters

- `input_images` (array, optional): A list of images to use as input for the generation
- `background` (string, optional): Set whether the background is transparent or opaque or choose automatically (Default: `auto`; Options: `auto`, `transparent`, `opaque`)
- `output_format` (string, optional): Output format (Default: `webp`; Options: `png`, `jpeg`, `webp`)
- `user_id` (string, optional): An optional unique identifier representing your end-user. This helps OpenAI monitor and detect abuse.
- `prompt` (string, **required**): A text description of the desired image
- `moderation` (string, optional): Content moderation level (Default: `auto`; Options: `auto`, `low`)
- `aspect_ratio` (string, optional): The aspect ratio of the generated image (Default: `1:1`; Options: `1:1`, `3:2`, `2:3`)
- `output_compression` (integer, optional): Compression level (0-100%) (Default: `90`; Range: min: 0, max: 100)
- `input_fidelity` (string, optional): Control how much effort the model will exert to match the style and features, especially facial features, of input images (Default: `low`; Options: `low`, `high`)
- `number_of_images` (integer, optional): Number of images to generate (1-10) (Default: `1`; Range: min: 1, max: 10)
- `quality` (string, optional): The quality of the generated image (Default: `auto`; Options: `low`, `medium`, `high`, `auto`)
- `openai_api_key` (string, optional): Your OpenAI API key (optional - uses proxy if not provided)

## Example Request

```json
{
  "model": "openai/gpt-image-1.5",
  "input": {
    "input_fidelity": "low",
    "aspect_ratio": "1:1",
    "number_of_images": 1,
    "output_format": "webp",
    "output_compression": 90,
    "background": "auto",
    "moderation": "auto",
    "prompt": "make a scene in chelsea, london in the 1970s, photorealistic, everything in focus, with tons of people, and a bus with an advertisement for \"ImageGen 1.5 on Replicate\"",
    "quality": "high"
  }
}
```

## Response Format

```json
{
  "job_id": "abc123",
  "status": "pending",
  "provider": "replicate",
  "model": "black-forest-labs/flux-schnell",
  "created_at": "2026-01-01T00:00:00Z",
  "result": null,
  "error": null
}
```

Status values: `pending`, `processing`, `completed`, `failed`, `cancelled`

## Usage Flow

1. POST /predictions with model and input → receive job_id
2. Poll GET /predictions/{job_id} until status is `completed` or `failed`
3. Result contains output URL(s) or data

## Output Type

url

## Tags

image-generation, text-to-image, image-editing, openai, typography, photorealistic, frontier

## Documentation

https://replicate.com/openai/gpt-image-1.5