Image model guide

GPT Image 2.5 Sunburst for reference-led editing

The second selectable GPT Image 2.5 product: the same tiers, shapes, background control and credit prices as Flare, with this guide focused on editing your own images.

Controls and specifications

Sunburst and Flare share one contract on this platform: the same quality tiers, shapes, background control and reference limit at the same credit price. Choosing between them is a matter of trying both, and we do not claim a quality difference between the two.

This guide explains editing with reference images. Use text mode to start from a written description without uploading images.

Quality tiers
1K · 2K · 4K
Reference images
16
Background
Automatic, solid, or transparent (1K only)
Shape options in text mode
Automatic · 1:1 · 3:2 · 2:3 · 4:3 · 3:4 · 16:9 · 9:16 · 21:9 · 27:16 · 16:27 · 9:8 · 8:9
Shape options when editing
Automatic · 1:1 · 3:2 · 2:3 · 4:3 · 3:4 · 16:9 · 9:16 · 21:9 · 27:16 · 16:27 · 9:8 · 8:9
Prompt limit
20000 characters

Editing mode requires at least one reference image and accepts up to sixteen. Quality tier, shape and, at 1K, background are selectable exactly as in text mode.

What this model is good at

Reference-led edits

Start from one image or a set of up to sixteen and describe the change: replace an element, restyle the scene, or keep a subject while everything around it changes.

Room for detailed prompts

A 20000-character prompt limit leaves space for layout instructions, on-image copy and styling notes in a single request.

The same tier ladder

1K, 2K and 4K with automatic backgrounds, so the editing workflow reaches the same tiers as text generation.

Typical projects

Restyling a product shot

Keep the product, change the setting, lighting or mood described in the prompt.

Keeping a character consistent

Supply several images of the same subject so a new scene still shows the same person or mascot.

Layout variations

Reuse an approved composition and vary the copy, colour scheme or background across a set.

Limits to know before you start

  • Text generation needs no reference image; editing mode takes between one and sixteen.
  • Background control is limited to the 1K tier, and four shape options are 1K only.
  • Tier names are not pixel measurements: the size of a finished file varies with the chosen shape.
  • Reference images are uploaded in the workspace before the task starts, so have the images ready before you begin.

How to start

1

Open the workspace

Use a button on this page. It opens the right workspace with this model already selected, in the language you are reading now.

2

Describe the result

Write what should happen in the shot or image. Concrete subjects, framing and action give the model more to work with than short labels.

3

Set the controls and confirm

Choose length or quality tier, shape and sound where offered, then read the credit quote for those exact settings before you generate.

What it costs

Generation uses account credits. Cost depends on the model, quality and output size or duration. Reference images, video or audio may add charges in some modes. Check the workspace quote for your selected inputs and settings before generating; the pricing page lists credit packages.

See credit packages

Questions about this model

Is Sunburst different from Flare?

Not in its controls or its price on this platform. Both are selectable GPT Image 2.5 variants with the same tiers, shapes, background control and reference limit. We do not claim a quality difference.

How many images can I edit with at once?

Between one and sixteen references per task.

Can I use it without a reference image?

Yes, but that is text generation rather than editing. Reference-based mode requires at least one image.

Which resolution should I pick for editing?

1K if you need an explicit solid or transparent background, otherwise any tier. Automatic background keeps 2K and 4K available.

How much does an edit cost?

The same per-image rate as text generation at the tier you choose. The workspace shows the amount before you confirm.