Luma Uni-1 Workflows in ComfyUI

This guide shows how to run the Luma Uni-1 workflows in ComfyUI. For what the model is and what it does best, see the Luma Uni-1 overview.

To use the Partner Nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the Partner Nodes Overview section of the documentation to understand the specific requirements for using the Partner Nodes.

Local users
Cloud users

Make sure your ComfyUI is updated.

Workflows in this guide can be found in the Workflow Templates. If you can’t find them in the template, your ComfyUI may be outdated.If nodes are missing when loading a workflow, possible reasons:

You are not using the latest ComfyUI version (Nightly version)
Some nodes failed to import at startup

The core distinction: Create vs Modify

Everything in Uni-1 starts with one question: Am I creating something new, or changing something that already exists?

Mode	What it does	When to use
Create Image	Produces a brand-new composition. Can be inspired by references.	”Create a new scene in the style of this photo”
Modify Image	Edits a specific input image. Preserves composition and structure unless told otherwise.	”Make this photo look like nighttime”

When in doubt:

If the output should look like a version of your input, use Modify
If it should feel inspired but new, use Create

Available workflows

Image Create workflow

Run Image Create on Cloud

Try the Image Create workflow instantly on Comfy Cloud.

Download Image Create Workflow

Download JSON or search “Luma UNI-1 Image Create” in Template Library

Image Edit workflow

Run Image Edit on Cloud

Try the Image Edit workflow instantly on Comfy Cloud.

Download Image Edit Workflow

Download JSON or search “Luma UNI-1 Image Edit” in Template Library

The workflow is simple: prompt → evaluate → refine. Leave the seed blank while exploring. Once you find something strong, lock the seed and iterate from there.

Core parameters

Parameter	Description
Prompt	Your primary control. Up to 6,000 characters. Be precise.
Aspect ratio	Controls framing, not quality. Choose based on use case.
Seed	Same seed + same prompt → same result. Same seed + changed prompt → controlled variation. No seed → exploration.
Reference images (Create)	Up to 9 images to guide different aspects.
Source image (Modify)	The image you are editing. Dimensions are preserved automatically.

Working with reference images

References only work if you tell the model what they are for. Use this structure:

Use IMAGE1 ([description]) as a [ROLE] reference.

Possible roles: Style, Character, Composition, Color palette, Lighting, Texture, Mood. Without roles, the model guesses, and guesses are unreliable.

Create mode examples

Style reference

Use IMAGE1 (impressionist oil painting with loose brushwork and warm
sunset tones) as a STYLE reference. Create a portrait of a woman in her
30s applying IMAGE1's color palette and painterly texture. The subject
should be new.

Character reference

Use IMAGE1 (woman with short copper-red hair, freckles) as a CHARACTER
reference. Preserve her features. Generate a new scene: she's sitting
in a softly lit café.

Multi-reference

Use IMAGE1 as a COLOR PALETTE reference, IMAGE2 as LIGHTING, IMAGE3 as
COMPOSITION. Create a lone figure walking through a rain-slicked street
at night.

Modify mode examples

In Modify mode, clarity is everything. Always specify what to change and what must stay untouched.

Change the time of day to golden hour. Update sky, light direction,
shadows, and color temperature. Keep all subjects and composition
unchanged.

Make the rain heavier and add reflections on the ground. Keep all other
elements unchanged.

Prompting guidelines

Recommended lengths:

Text-to-image → 80–250 words
Reference-guided → 100–300 words
Modify → 30–100 words

Avoid vague terms (“beautiful”, “amazing”), redundant phrasing, and conflicting instructions. Instead, use specific, named aesthetics:

Golden hour, 85mm lens, shallow depth of field
1970s Italian giallo film poster, high-contrast color blocking

Precision beats generality.

Aspect ratios

Choose based on where the image will live:

Ratio	Use case
1:1	Social posts
9:16	Vertical video
16:9	Widescreen
3:2 / 2:3	Photography
2:1 / 3:1	Cinematic / panoramic
1:2 / 1:3	Ultra-tall

In Modify mode, aspect ratio is locked to the source image.

Seeds: control and reproducibility

Seeds turn experimentation into systems.

Fixed seed → consistency
No seed → exploration

Workflow:

Explore with no seed
Find a strong result
Lock the seed
Change one variable at a time

Save your prompt and seed together. That’s your reusable recipe.

Advanced techniques

Character consistency

Generate a clean, front-facing reference image
Reuse it as IMAGE1 (CHARACTER) in every scene
Keep the label identical across prompts

Multi-reference architecture

Assign one role per image:

IMAGE1 → character
IMAGE2 → style
IMAGE3 → lighting
IMAGE4 → environment

End the prompt with:

Treat each reference as having authority over its assigned layer only.

Create → Modify chain

Use Create to explore compositions, then Modify to refine details. This is one of the most powerful workflows.

Explore (no seed)
Lock seed
Change one variable per generation
Document results

It feels slower, but it’s actually faster, because you always know what changed.

Troubleshooting

Problem	Fix
References ignored	Label each one clearly
Modify changes too much	Explicitly state what must stay unchanged
Inconsistent outputs	Lock the seed
Prompt partially ignored	Remove conflicts or split into steps
Output looks like the reference image	You may be in Modify mode
Character inconsistency	Reuse a canonical reference image

Quick reference

Create Image

New compositions
Text + up to 9 references
Descriptive prompts

Modify Image

Edits existing images
Source image + references
Direct, surgical prompts

The golden rules

Label every reference
In Modify mode, always state what should not change
Change one variable at a time when refining
Save prompt + seed for reproducibility
Create = new scenes, Modify = edits

Key takeaway

Mastering Uni-1 comes down to three things: choose the right mode → control your references → iterate with intention. Once those are in place, you’re no longer guessing, you’re directing.

Get Started

Agent Tools

Basic Concepts

Interface Guide

Tutorials

Partner Nodes

Luma Uni-1 Workflows in ComfyUI

The core distinction: Create vs Modify

Available workflows

Image Create workflow

Run Image Create on Cloud

Download Image Create Workflow

Image Edit workflow

Run Image Edit on Cloud

Download Image Edit Workflow

Core parameters

Working with reference images

Create mode examples

Modify mode examples

Prompting guidelines

Aspect ratios

Seeds: control and reproducibility

Advanced techniques

Character consistency

Multi-reference architecture

Create → Modify chain

Iterative refinement

Troubleshooting

Quick reference

The golden rules

Key takeaway

​The core distinction: Create vs Modify

​Available workflows

​Image Create workflow

Run Image Create on Cloud

Download Image Create Workflow

​Image Edit workflow

Run Image Edit on Cloud

Download Image Edit Workflow

​Core parameters

​Working with reference images

​Create mode examples

​Modify mode examples

​Prompting guidelines

​Aspect ratios

​Seeds: control and reproducibility

​Advanced techniques

​Character consistency

​Multi-reference architecture

​Create → Modify chain

​Iterative refinement

​Troubleshooting

​Quick reference

​The golden rules

​Key takeaway

The core distinction: Create vs Modify

Available workflows

Image Create workflow

Image Edit workflow

Core parameters

Working with reference images

Create mode examples

Modify mode examples

Prompting guidelines

Aspect ratios

Seeds: control and reproducibility

Advanced techniques

Character consistency

Multi-reference architecture

Create → Modify chain

Iterative refinement

Troubleshooting

Quick reference

The golden rules

Key takeaway