OpenAI · the precision model in GPT Image 2.5
Upload an image and change one thing, the backdrop, an outfit, or the product, while the face, shape, and layout stay put. Sunburst is OpenAI's precision model in the GPT Image 2.5 family: same credits as Flare, longer renders, more care on fine detail. No ChatGPT plan or API key needed.
Single-change edits
Each pair shows an original and its single-change edit. Drag the divider and check the parts that were supposed to stay; the guidance below shows how to word the instruction.
Product photo · backdrop
Move a product shot to a new setting without a reshoot: name the new background, then list the shape, angle, and label text that must not change. Check the lettering and the outline first, here on a sardine tin moved onto a fishing boat.
Portrait · outfit
Restyle what someone is wearing while the face, expression, and pose stay recognizably theirs. Put the identifying details, such as freckles, earrings, and hand position, in the keep list and compare them at full size.
Ad scene · product
Put a new model or colorway into an existing ad scene so the props, light, and space reserved for copy stay as they were. If you have a photo of the new product, upload it as image 2 and ask to replace the item with the one in image 2.
Interior · furniture
Try a different piece of furniture in a finished interior without touching the architecture. Check that the windows, the light on the floor, and the perspective still line up.
Both are OpenAI GPT Image 2.5 models and cost the same credits at every resolution and quality on Oeneo AI; Sunburst takes longer and spends the time on detail and edit precision. GPT Image 2 and Ideogram 4.5 are listed for the jobs they handle differently. Arena scores are public human-preference votes, not Oeneo AI tests.
| Compare | GPT Image 2.5 Sunburst | GPT Image 2.5 Flare | GPT Image 2 | Ideogram 4.5 |
|---|---|---|---|---|
| Built for | Edit precision; slower than FlareSeptember 8, 2026 | Speed; OpenAI's default pickSeptember 8, 2026 | Text-heavy posters and layoutsApril 21, 2026 | Editing words and colors in designsSeptember 30, 2026 |
| Credits per image1K text to image, by quality | 2 · 4 · 16 · 32 · 60low · medium · high · xhigh · max | 2 · 4 · 16 · 32 · 60low · medium · high · xhigh · max | 2 · 16 · 60low · medium · high | 6 · 12 · 44low · medium · high |
| LMArena single-image editArena, Oct 6, 2026 | 1524Preliminary | 1481Preliminary | 1462 | 1347 |
| LMArena multi-image editArena, Oct 6, 2026 | 1527Preliminary | 1476Preliminary | 1454 | 1336 |
| Reference images | 16 | 16 | 16 | 5 |
| Max resolution | 4K | 4K | 4K | 2K |
| Choose it when | An edit must leave the rest alone | Drafting, or need many images fast | Continuing a GPT Image 2 series | Rewriting the words in a design |
Sunburst follows the wording closely, so the instruction decides what moves. These habits follow OpenAI's GPT Image 2.5 prompting guide.
Name one change, then list what stays
Open with “Change only…”, then name each part that must not move. A specific keep list works better than “keep everything else the same.”
Number your references and give each a job
“Image 1 is the product. Use image 2 only for the glaze color and image 3 only for the room layout.” With the Auto ratio, the result follows image 1.
Draft low, finish high
Settle the wording at low, then rerun the same instruction at high. Try xhigh or max only when a specific detail, such as small label text or hands, still fails.
Edit in rounds
Download the result, upload it as image 1, ask for the next single change, and repeat the keep list.
Several changes in one request
“Make it premium, warmer, with new props” invites a redesign of the parts you wanted to keep.
Expecting untouched pixels
The whole image is re-rendered. If an area must match exactly, paste it back from the original in an image editor.
Asking for a transparent background in the prompt
There's no transparency setting for Sunburst here. Remove the background afterwards with Background Remover.
Paragraphs of small text
Dense small text can still come out wrong. Keep copy short, put it in quotes, and check it at 100% zoom.
Example: “Change only the background to a warm sand studio sweep. Keep the bottle shape, cap, label text, and highlights unchanged.” Based on OpenAI's GPT Image 2.5 prompting guide.
Each model has its own page and runs in the same workbench on one credit balance.
OpenAIFaster everyday generation, natural lighting and rich textures
View model
OpenAIReadable text, complex briefs, precise edits
View model
New
GoogleConsistent characters, product placement, exact short text
View model
New
Black Forest LabsComposed scenes from a prompt or references
View modelRemove the background, upscale, vectorize or denoise any result, all on the same credit balance.
Transparent PNG or WebP with clean hair and product edges, ready for a listing or a new composition.
2× / 4× / 8× with recovered texture instead of smeared pixels, so a 1K draft can become a print.
Logos, icons and flat illustrations become editable SVG that scales to any size.
Remove grain and compression artifacts from low-light photos and scans while keeping real detail.
GPT Image 2.5 Sunburst is one of the two GPT Image 2.5 models OpenAI released on September 8, 2026. OpenAI calls it its most capable model for image generation and editing and recommends it where editing precision matters most; it takes longer to generate than Flare. On Oeneo AI you can use it in the browser without a ChatGPT plan or an OpenAI API key.
Start with Flare for drafts, exploration, and volume, and switch to Sunburst when an edit has to leave the rest of the image alone or the final file has to hold up at full size. OpenAI describes Flare as the small model optimized for speed and Sunburst as the base model optimized for quality. On Oeneo AI both cost the same credits at every setting, so the trade-off is time. On LMArena's single-image edit leaderboard dated October 6, 2026, Sunburst scored 1524 and Flare 1481.
OpenAI says Sunburst gives higher image quality than GPT Image 2, and GPT Image 2.5 adds the xhigh and max quality levels. If a prompt you tuned on GPT Image 2 already works, OpenAI suggests trying Flare first for speed. The GPT Image 2 page compares the two generations in full.
You can try it free: new Oeneo AI accounts get 10 credits, valid for 365 days, enough for about 5 drafts at low quality. A 1K text-to-image costs, by quality: low 2 · medium 4 · high 16 · xhigh 32 · max 60 credits. Edits cost more: 3 credits at 1K low with one reference image, plus 2 for each extra reference. The Generate button shows the exact amount before you submit, failed tasks are refunded, and images made on the free plan are public.
Usually close, but not pixel-identical. Sunburst re-renders the whole image, so write “change only X” and list what must stay: face, product shape, label text, layout, lighting. Check those areas at full size. For the next change, download the result and upload it as the first image again. If a region must match the original exactly, paste it back from the original in an image editor.
Up to 16 per run. Number them in the prompt and give each a job, for example “image 1 is the product, image 2 is only for the color.” With the Auto ratio, the result follows the first image. The first reference is included in the price; each extra one adds 2 credits per output image.
Use low to settle the composition and wording, then run the approved instruction at high for the final. Move to xhigh or max only when a specific detail, such as small label text or hands, still fails at high; OpenAI notes a higher setting doesn't guarantee a better result. Each step up costs more, and the Generate button shows the amount.
Yes. Choose 1K, 2K, 4K in 1:1, 4:3, 3:4, 16:9, 9:16, 21:9, 9:21. On Oeneo AI, 4K means up to 3840 px on the long edge: 3840×2160 for 16:9 and 2880×2880 for 1:1. OpenAI labels sizes above 2560×1440 as experimental, so check 4K results closely; for larger prints, enlarge the result with Image Upscaler.
No. OpenAI's API supports both, but Oeneo AI doesn't offer those settings for Sunburst. Describe the area to change in words, and for a transparent PNG, run the result through Background Remover. ChatGPT-only features such as Sketch and comment-based editing aren't available here either.
Yes, on paid plans: subscriptions include a full commercial license, and the Lifetime plan covers personal commercial use (see Pricing). Oeneo AI doesn't claim ownership of the images you create. Whether a specific image is safe to publish still depends on OpenAI's usage policies and the rights in what you upload or depict, such as real people, brands, or artwork.
Write the one change and what has to stay, and see the credits before you generate.
