Elon Musk’s chatbot Grok posted on Friday that lapses in safeguards had led it to generate “images depicting minors in minimal clothing” on social media platform X. The chatbot, a product of Musk’s company xAI, has been generating a wave of sexualized images throughout the week in response to user prompts.

Screenshots shared by users on X showed Grok’s public media tab filled with such images. xAI said it was working to improve its systems to prevent future incidents.

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Many users on X have prompted Grok to generate sexualized, nonconsensual AI-altered versions of images in recent days, in some cases removing people’s clothing without their consent. Musk on Thursday reposted an AI photo of himself in a bikini, captioned with cry-laughing emojis, in a nod to the trend.

Grok’s generation of sexualized images appeared to lack safety guardrails, allowing for minors to be featured in its posts of people, usually women, wearing little clothing, according to posts from the chatbot. In a reply to a user on X on Thursday, Grok said most cases could be prevented through advanced filters and monitoring although it said “no system is 100% foolproof,” adding that xAI was prioritising improvements and reviewing details shared by users.