PANews reported on April 7 that according to BleepingComputer, OpenAI is testing adding a watermark function to the ChatGPT-4o image generation model (ImageGen), or adding a logo to images generated by free users. Currently, the model is open to all users and supports high-quality image generation, including works in the style of Ghibli. It is reported that images generated by ChatGPT Plus subscribers will not have watermarks. In addition, OpenAI is developing the ImageGen API, which will be open to developers in the future.