So far, US regulators have been quiet about Grok’s outputs, with the Justice Department generally promising to take all forms of CSAM seriously. On Friday, Democratic senators started shifting those tides, demanding that Google and Apple remove X and Grok from app stores until it improves safeguards to block harmful outputs.

“There can be no mistake about X’s knowledge, and, at best, negligent response to these trends,” the senators wrote in a letter to Apple Chief Executive Officer Tim Cook and Google Chief Executive Officer Sundar Pichai. “Turning a blind eye to X’s egregious behavior would make a mockery of your moderation practices. Indeed, not taking action would undermine your claims in public and in court that your app stores offer a safer user experience than letting users download apps directly to their phones.”

A response to the letter is requested by January 23.

Whether the UK will accept X’s supposed solution is yet to be seen. If UK regulator Ofcom decides to move ahead with a probe into whether Musk’s chatbot violates the UK’s Online Safety Act, X could face a UK ban or fines of up to 10 percent of the company’s global turnover.

“It’s unlawful,” UK Prime Minister Keir Starmer said of Grok’s worst outputs. “We’re not going to tolerate it. I’ve asked for all options to be on the table. It’s disgusting. X need to get their act together and get this material down. We will take action on this because it’s simply not tolerable.”

At least one UK parliament member, Jess Asato, told The Guardian that even if X had put up an actual paywall, that isn’t enough to end the scrutiny.

“While it is a step forward to have removed the universal access to Grok’s disgusting nudifying features, this still means paying users can take images of women without their consent to sexualise and brutalise them,” Asato said. “Paying to put semen, bullet holes, or bikinis on women is still digital sexual assault, and xAI should disable the feature for good.”