4 4 

5Use up to three source images for a single image edit. You can specify images in the order they are sent in the request. By default, the output aspect ratio follows the first input image. You can override this by setting the `aspect_ratio` parameter to a specific ratio, such as `"1:1"` or `"16:9"`.5Use up to three source images for a single image edit. You can specify images in the order they are sent in the request. By default, the output aspect ratio follows the first input image. You can override this by setting the `aspect_ratio` parameter to a specific ratio, such as `"1:1"` or `"16:9"`.

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7Each source image can be a public URL, a base64-encoded data URI, or a `file_id` from the [Files API](/developers/files) — and you can mix kinds within a single request. See [Imagine → Files API Integration](/developers/model-capabilities/imagine/files/inputs) for `file_id` details and examples.

8 

7## Related9## Related

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9* [Image Generation](/developers/model-capabilities/images/generation) — Generate images from text prompts11* [Image Generation](/developers/model-capabilities/images/generation) — Generate images from text prompts