---
title: Luma Labs | Scenario Docs
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> This page is auto-generated from model configurations. Last updated: 2026-04-09.

This reference lists all available **Luma Labs** image generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md).

- [Luma Photon](#luma-photon)
- [Luma Photon Flash](#luma-photon-flash)

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## Luma Photon

**Model ID:** `model_luma-photon`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_luma-photon/markdown>

| Parameter               | Type   | Required | Default | Min | Max | Allowed Values                                      | Description                                                                                                                                 |
| ----------------------- | ------ | -------- | ------- | --- | --- | --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| `prompt`                | string | Yes      | -       | -   | -   | -                                                   | Text prompt for image generation                                                                                                            |
| `aspectRatio`           | string | No       | `4:3`   | -   | -   | `9:21`, `9:16`, `3:4`, `1:1`, `4:3`, `16:9`, `21:9` | Aspect ratio of the generated image                                                                                                         |
| `imageReferenceUrl`     | file   | No       | -       | -   | -   | -                                                   | Use a reference image to guide your generation.                                                                                             |
| `imageReferenceWeight`  | number | No       | `0.85`  | 0   | 1   | -                                                   | Influence of the reference image. Larger values will make the reference image have a stronger influence on the generated image.             |
| `styleReferenceUrl`     | file   | No       | -       | -   | -   | -                                                   | Use a style image to influence the visual style of your generation.                                                                         |
| `styleReferenceWeight`  | number | No       | `0.85`  | 0   | 1   | -                                                   | Influence of the style reference image. Larger values will make the style reference image have a stronger influence on the generated image. |
| `characterReferenceUrl` | file   | No       | -       | -   | -   | -                                                   | Use a character image to guide your generation.                                                                                             |
| `seed`                  | number | No       | -       | -   | -   | -                                                   | Use a custom seed for targeted results (single-image inference)                                                                             |

## Luma Photon Flash

**Model ID:** `model_luma-photon-flash`

**Capabilities:** `txt2img`

**LLM Markdown:** <https://app.scenario.com/api/models/model_luma-photon-flash/markdown>

| Parameter               | Type   | Required | Default | Min | Max | Allowed Values                                      | Description                                                                                                                                 |
| ----------------------- | ------ | -------- | ------- | --- | --- | --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| `prompt`                | string | Yes      | -       | -   | -   | -                                                   | Text prompt for image generation                                                                                                            |
| `aspectRatio`           | string | No       | `4:3`   | -   | -   | `9:21`, `9:16`, `3:4`, `1:1`, `4:3`, `16:9`, `21:9` | Aspect ratio of the generated image                                                                                                         |
| `imageReferenceUrl`     | file   | No       | -       | -   | -   | -                                                   | Use a reference image to guide your generation.                                                                                             |
| `imageReferenceWeight`  | number | No       | `0.85`  | 0   | 1   | -                                                   | Influence of the reference image. Larger values will make the reference image have a stronger influence on the generated image.             |
| `styleReferenceUrl`     | file   | No       | -       | -   | -   | -                                                   | Use a style image to influence the visual style of your generation.                                                                         |
| `styleReferenceWeight`  | number | No       | `0.85`  | 0   | 1   | -                                                   | Influence of the style reference image. Larger values will make the style reference image have a stronger influence on the generated image. |
| `characterReferenceUrl` | file   | No       | -       | -   | -   | -                                                   | Use a character image to guide your generation.                                                                                             |
| `seed`                  | number | No       | -       | -   | -   | -                                                   | Use a custom seed for targeted results (single-image inference)                                                                             |