On August 22OpenAI On August 21, it was announced thatGPT Image 2 API starts previewing transparent background generation. Developers can directly generate reusable material that can be superseded to different contexts for use in product pictures, plane design, prototype website and marketing content。

This update fills a GPT Image 2 capability gap that previously did not support a transparent background in API. The official model page shows that GPT Image 2 can be used through image generation and image editing endpoints, and supports flexible image sizes and high-level preservation image input。
On the same day, an anonymous image model named luna-lisa-alpha appeared on LMArena, and some testers speculated that it might be related to the next generation image model of OpenAI; OpenAI has not yet identified the model and therefore cannot be considered a GPT Image 2.5 official preview at this stage。