Signups for ChatGPT hit 1 million in an hour on Monday. This follows the launch of a new image-generation feature that simulates the artwork of Hayao Miyazaki. Miyazaki has been outspoken in his disdain for AI-generated art.

OpenAI chief executive Sam Altman is celebrating on social media with the announcement that the company's new image-generation features in ChatGPT helped to add “one million users” in one hour. Mr Altman's claim comes several days after he said new image features in the company's GPT-4o was so popular that it was melting OpenAI's graphics processing units (GPUs).