Indonesian X users who found their manipulated pictures on the platform said they felt angry that this was allowed to happen.
Kirana Ayuningtyas, a wheelchair user who posts online about her daily experiences, found that a stranger had commented on her picture with a prompt asking for Grok to depict her wearing a bikini.
Ayuningtyas said she adjusted her privacy settings and contacted the platform to get the image removed prevent users from editing her photos.
“Unfortunately, none of that really worked,” she said, adding that it was hard to tell if someone out there is holding on to the images.
She asked her friends to report the accounts that published her faked images, but doing so meant even more people see the edited images, which is deeply embarrassing for her.
The BBC has contacted the Grok platform for comment.
The use of Grok to generate sexualised images has been condemned by leaders worldwide, including UK Prime Minister Keir Starmer, who called it “disgraceful” and “disgusting”.
The country’s Technology Secretary Liz Kendall has also said she would back regulator Ofcom if it blocks UK access to Elon Musk’s social media site X for failing to comply with online safety laws.
She said the UK’s Online Safety Act “includes the power to block services from being accessed in the UK, if they refuse to comply with UK law” and “if Ofcom decide to use those powers they will have our full support”.