GPT Image 2.5 is a family of two image-generation models available through OpenAI’s API. Sunburst is intended for work where editing accuracy matters most, while Flare prioritizes speed for routine generation.
That distinction matters. GPT Image 2.5 should not be reviewed as though it were simply an image feature bundled with ChatGPT Plus. Developers access it through the Images API or use it as an image-generation tool inside the Responses API. API usage is billed separately according to the number and type of tokens processed.
The Images API is the more direct option for generating or editing individual images. The Responses API adds conversational, multi-turn workflows, allowing an application to retain an image in context and apply subsequent changes without rebuilding the request from scratch.
The editing capabilities are one of the strongest reasons to use it. GPT Image 2.5 accepts reference images, supports masked edits, and can carry an image through multiple rounds of revision. Sunburst is the better choice when preserving the original subject or composition matters. Flare makes more sense when producing drafts or larger volumes quickly.
Output controls are much stronger than the previous review suggested. Both models support custom dimensions, quality settings ranging from low to max, transparent backgrounds, and PNG, JPEG, or WebP exports. Images can reach 4K dimensions, although OpenAI classifies resolutions above 2560 × 1440 as experimental.
Text rendering has improved, but calling it “near-perfect” is an overstatement. Short headlines and simple labels can work well, but longer copy, small type, and tightly controlled placement still need checking. OpenAI itself identifies precise text placement and clarity as continuing limitations.
The same warning applies to layout control. GPT Image 2.5 can follow detailed instructions, but it may still shift objects, alter spacing, or lose consistency across repeated characters and brand elements. A successful first result does not guarantee that the fifth variation will preserve everything correctly.
Speed depends heavily on the model, dimensions, and quality setting. Flare is the sensible default when turnaround matters. Sunburst and the higher quality modes are better treated as final-render options. Complex generations can still take up to two minutes, so this is not an instant production pipeline.
The final limitation is editability. GPT Image 2.5 exports raster images, not layered Photoshop, Illustrator, or Figma files. It can revise an image intelligently, but it does not give a designer independent control over the typography, objects, masks, and background afterward.
