GPT Image 2.5 Sunburst is OpenAI’s high-end image generation and editing model, with the Sunburst variant specifically optimized for workflows where editing precision and controlled visual refinement matter most. It can transform reference images according to detailed prompts while preserving important elements of the original composition. The Kie.ai image-to-image implementation supports up to 16 input images, resolutions from 1K to 4K, flexible aspect ratios, and transparent or opaque backgrounds. This makes it suitable for sophisticated image editing, multi-reference composition, product visualization, and production-ready creative workflows.