GPT Image 2.5 Sunburst for Text to Image

ABOUT THE WORKFLOW

Generate an Image from a Prompt
Write a text prompt describing the image you want. The model generates it and returns the result. Choose from preset sizes, quality tiers, and transparent or opaque backgrounds.

Partner node. This workflow calls an external API, so each run uses credits from your API wallet. No API key needed. Floyo handles the connection.

Model

• GPT Image 2.5 Sunburst by OpenAI. The precision variant of GPT Image 2.5, built for detailed creative work with strong prompt adherence and sharp detail. Slower than the Flare variant, but higher fidelity.

HOW IT WORKS

Step 1. Write your prompt
Describe the image you want. Include the subject, setting, lighting, angle, and style. The model follows long, detailed prompts well.
Works great with: product shots · character art · editorial photos · environments

Step 2. Hit run and download
The model generates the image and returns it to the preview. Download the result or run again with a different prompt.
Ready for: Photoshop · Figma · Canva · any editor

First time? Leave every setting as-is. The defaults (1024×1024 · high quality · 1 image · PNG) are the right starting point for almost everyone.

RECOMMENDED SETTINGS

Quick-start guide. Find the goal that matches yours and copy the settings.

• Standard generation (most people) — 1024×1024 · high quality · 1 image · PNG. The right starting point for almost everyone.

• Need a landscape or portrait crop — Switch image size to one of the presets like 1536×1024 (landscape) or 1024×1536 (portrait) to match your layout.

• Want the sharpest detail possible — Set quality to xhigh or max. Each step up adds generation time and cost, but returns finer textures and cleaner edges.

• Quick test before committing — Set quality to low or medium for a fast preview. Step up to high once the prompt is right.

• Need a transparent background — Set background to transparent. Good for product cutouts, stickers, logos, and overlay elements.

• Want several options to pick from — Raise num images to 2 or 3. Each image costs separately, but you can compare results and keep the strongest.

• The output is not matching your prompt — Rewrite the prompt before changing settings. Be specific about subject, angle, lighting, and style. More detail tends to help.

Prompt: Describe the subject, setting, lighting, camera angle, and visual style in one paragraph. "A matte-black coffee mug on a walnut slab, warm golden hour side-light, macro lens at f/2.8, editorial food-magazine aesthetic" works better than "a nice coffee photo." The model responds well to long, specific prompts.

LEARN

📹 Videos

• Intro to Floyo

• ComfyUI 101 Free Course ft. Sebastian Kamph

• Floyo 101 for Team Collaboration

✨ Quick links

• Help docs

• LoRA Training guide

• Discover more workflows

USE CASES

📸 Product & Marketing Photography
Generate polished product shots, hero images, and campaign visuals from a detailed prompt, without a photo shoot.

🎨 Concept Art & Worldbuilding
Describe a character, environment, or scene and get a high-fidelity reference image to pitch or build from.

📰 Editorial & Social Content
Create on-brand illustrations and header images for blog posts, social campaigns, and newsletters on demand.

🛍️ E-Commerce & Listing Images
Generate product-on-background images with transparent background mode, ready to composite into any storefront layout.

WHAT WORKS BEST / WHAT TO AVOID

✅ Works great

• Detailed prompts with subject, lighting, angle, and style

• Product and editorial photography descriptions

• Character and environment concept art

• Prompts that specify a single clear scene

⚠️ May produce softer results

• Vague one-line prompts like "a cool image"

• Requests for specific real people by name

• Multiple unrelated subjects in one prompt

• Expecting pixel-exact text rendering in complex layouts

FAQ

What is GPT Image 2.5 Sunburst?
GPT Image 2.5 Sunburst is OpenAI's precision-focused image generation model, released September 8, 2026. It is the higher-fidelity variant of GPT Image 2.5, built for detailed creative work where prompt adherence and fine detail matter more than speed. The faster, lighter variant is called Flare.

What is the difference between GPT Image 2.5 Sunburst and Flare?
Flare is faster and designed for everyday creation and higher-volume workflows. Sunburst is slower but returns sharper detail, tighter prompt adherence, and more precise control over the output. If generation speed matters more than fine fidelity, Flare is the better pick. For premium creative work, Sunburst is the precision tier.

What image sizes does GPT Image 2.5 Sunburst support?
The model supports preset sizes from 1024×1024 up to 4K resolution, across square, landscape, portrait, and wide aspect ratios. The default is 1024×1024. Choose the size that matches your output target, whether that is a social post, a hero banner, or a print-ready asset.

Can GPT Image 2.5 Sunburst generate images with transparent backgrounds?
Yes. Set the background option to transparent. This produces a cutout image with no background, ready for compositing into product listings, stickers, overlays, or design layouts.

Can I use GPT Image 2.5 Sunburst outputs for commercial projects?
GPT Image 2.5 Sunburst is a proprietary OpenAI model, so commercial use is governed by OpenAI's usage policies rather than an open license. Commercial use is generally permitted under those terms. Review OpenAI's current policies for your specific use case.

How does GPT Image 2.5 Sunburst compare to Nano Banana Pro or Flux?
Sunburst is a closed-source model accessed through OpenAI's API, optimized for prompt precision, clean structure, and high detail. Nano Banana Pro (Google's Gemini 3 Pro image model) is strong at realistic edits and accurate text rendering. Flux models are open-source diffusion models with a different generation approach. Each has different strengths. Sunburst tends to follow long, descriptive prompts with high accuracy.

How to run GPT Image 2.5 Sunburst online?
You can run GPT Image 2.5 Sunburst online through Floyo. No installation, no setup, no API key to wire up. Open the workflow in your browser, write your prompt, and hit run. Free to try.

WHY FLOYO?

Floyo is the only platform with team collaboration for ComfyUI in the browser. You run workflows with no install. You share run history, assets, and models across your team. You pay only when you generate. Floyo supports open-source and closed-source models.

A designer runs a generation and likes the result. A teammate opens that exact run from shared history and keeps going. No file handoffs. No version confusion.

For studios and enterprise teams, Floyo adds private workspaces, pooled resources, and a team usage dashboard. Other ComfyUI cloud tools run for one person at a time. Floyo runs for the whole team, with transparent per-generation costs.

Ready to try it?
Write a prompt and run it. The settings are already set.

→ Launch Workflow, Free

Questions? Watch the free course or check the FAQ above.