Luma Labs

GENERATION API CALLS

Image Model Generation

This page is auto-generated from model configurations. Last updated: 2026-06-15.

This reference lists all available Luma Labs image generation models and their parameters. Use these parameter names when calling the Generation API.

Luma Photon
Luma Photon Flash
Luma Uni-1
Luma Uni-1 Max

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)

Luma Uni-1

Generate or edit images from a text prompt, with optional reference images for style guidance and a web search option to ground results in real-world visuals.

Model ID: model_luma-uni-1

Capabilities: txt2img, img2img

LLM Markdown: https://app.scenario.com/api/models/model_luma-uni-1/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	Yes	-	-	-	-	Describe the image you want to generate, or describe the changes you want to make when editing an existing image. Be specific about subject, style, mood, and composition for best results.
`source`	file	No	-	-	-	-	An existing image to edit. When provided, your prompt describes what to change rather than what to create. The output keeps the same aspect ratio unless you set one explicitly.
`imageRef`	file_array	No	``	-	-	-	Reference images that guide the style or content of the output. Add up to 9 for generation, or up to 8 when editing (the source image occupies one slot). Each reference image adds a small cost.
`aspectRatio`	string	No	`3:2`	-	-	`1:3`, `1:2`, `9:16`, `2:3`, `1:1`, `3:2`, `16:9`, `2:1`, `3:1`	The width-to-height ratio of the generated image. Ignored when editing an existing image unless explicitly set.
`outputFormat`	string	No	`png`	-	-	`png`, `jpeg`	File format of the generated image. PNG is lossless and supports transparency; JPEG is smaller and loads faster.
`webSearch`	boolean	No	`false`	-	-	-	When enabled, the model searches the web for relevant reference images before generating. Useful when your prompt refers to real-world subjects, places, or styles the model may not know well.

Luma Uni-1 Max

Generate or edit images from a text prompt at higher quality, with optional reference images for style guidance and a web search option to ground results in real-world visuals.

Model ID: model_luma-uni-1-max

Capabilities: txt2img, img2img

LLM Markdown: https://app.scenario.com/api/models/model_luma-uni-1-max/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
`prompt`	string	Yes	-	-	-	-	Describe the image you want to generate, or describe the changes you want to make when editing an existing image. Be specific about subject, style, mood, and composition for best results.
`source`	file	No	-	-	-	-	An existing image to edit. When provided, your prompt describes what to change rather than what to create. The output keeps the same aspect ratio unless you set one explicitly.
`imageRef`	file_array	No	``	-	-	-	Reference images that guide the style or content of the output. Add up to 9 for generation, or up to 8 when editing (the source image occupies one slot). Each reference image adds a small cost.
`aspectRatio`	string	No	`3:2`	-	-	`1:3`, `1:2`, `9:16`, `2:3`, `1:1`, `3:2`, `16:9`, `2:1`, `3:1`	The width-to-height ratio of the generated image. Ignored when editing an existing image unless explicitly set.
`outputFormat`	string	No	`png`	-	-	`png`, `jpeg`	File format of the generated image. PNG is lossless and supports transparency; JPEG is smaller and loads faster.
`webSearch`	boolean	No	`false`	-	-	-	When enabled, the model searches the web for relevant reference images before generating. Useful when your prompt refers to real-world subjects, places, or styles the model may not know well.