> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gravitex.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT-Image overview

> GPT-Image models, endpoints, and integration overview

## Introduction

GPT-Image is OpenAI's image model family for text-to-image generation, editing, restyling, and blending reference images. These documents currently cover image-2, image-2.6 Flare / Sunburst, and image-2.5 Flare / Sunburst, with separate guides for each endpoint.

* **Base URL**: `https://api.gravitex.ai`
* **Authentication**: `Authorization: Bearer sk-xxxxxxxxxx`
* **Content-Type**: `application/json` for generation; JSON or `multipart/form-data` for editing

## Documented models

| Model | Model ID | Capabilities |
| - | - | - |
| image-2 | `gpt-image-2` | Text-to-image, image editing, multiple sizes and 4K output |
| image-2.6-flare | `gpt-image-2.6-flare` | Fast iteration · [Text-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.6/generations.md) · [Image-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.6/edits.md) |
| image-2.6-sunburst | `gpt-image-2.6-sunburst` | Detailed visual work · [Text-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.6/generations.md) · [Image-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.6/edits.md) |
| image-2.5-flare | `gpt-image-2.5-flare` | Fast iteration · [Text-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.5/generations.md) · [Image-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.5/edits.md) |
| image-2.5-sunburst | `gpt-image-2.5-sunburst` | Detailed visual work · [Text-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.5/generations.md) · [Image-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2.5/edits.md) |

## Supported endpoints

| Method | Path | Recommended use | Request format |
| - | - | - | - |
| `POST` | `/v1/images/generations` | [Text-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2/generations.md) | JSON |
| `POST` | `/v1/images/edits` | [Image-to-image](https://docs.gravitex.ai/en/api-reference/endpoint/gpt-image-2/edits.md): editing, inpainting, and blending references | JSON, multipart/form-data |

> [!NOTE]
>
> The image-2 guide documents gateway extensions for image input on generations and text-only edits. Do not assume those extensions apply to image-2.6: use generations for text-to-image and edits with images for editing.

## Response and billing

Both endpoints return Base64 images in `data[].b64_json` and token statistics in `usage`. Text input, image input, and image output are billed separately. See endpoint guides for details.

> [card] [Latest models and pricing](https://maas.gravitex.ai/#/api-models)
>
> Check the console model catalog for current models, capabilities, and prices.

## Integration flow

1. Obtain an API key and configure the gateway URL and Bearer authentication.
2. Choose the generation or editing endpoint guide.
3. Send the selected `model` ID, `prompt`, and the desired parameters; include reference images for editing.
4. Decode `data[].b64_json` to save the images and read `usage` for token consumption.


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