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

# Image generation

> The gateway requires `model` to be passed in explicitly. Different models only support parameter combinations in the table below.

| Model | Dimensions | Quality | Model-specific parameters |
| --- | --- | --- | --- |
| `gpt-image-2.5-sunburst` / `flare` (including snapshots) | Any `WIDTHxHEIGHT` (16 multiples, 1:3~3:1, up to 3840x2160) | `auto/low/medium/high/xhigh/max` | `background`, `moderation`, `output_format`, `output_compression`, `stream`, `partial_images` |
| `gpt-image-2` (including snapshots) | Same as above | `auto/low/medium/high` | Same as above; transparent background is still a preview capability |
| `gpt-image-1` / `1.5` / `1-mini` | `auto`, 1024×1024, 1536×1024, 1024×1536 | `auto/low/medium/high` | `background`, `moderation`, `output_format`, `output_compression`, `stream`, `partial_images` |
| `dall-e-3` | 1024×1024, 1792×1024, 1024×1792 | `standard/hd` | `n` can only be 1; supports `style`, `response_format` |
| `dall-e-2` | 256×256, 512×512, 1024×1024 | `standard` | Support `n=1..10`, `response_format` |



## API Specification

The full API specification for this endpoint is available in the [documentation index](https://tikway.mintlify.site/llms.txt).


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.