(FILES) This photograph taken on January 13, 2025 in Toulouse shows screens displaying the logo of Grok, a generative artificial intelligence chatbot developed by xAI, the American company specializing in artificial intelligence and it's founder South African businessman Elon Musk. The UK's internet security regulator Ofcom announced on Monday, January 12, 2026, the opening of a "formal investigation" into the social network X "concerning sexually explicit images disseminated" by its artificial intelligence assistant Grok, according to a statement. (Photo by Lionel BONAVENTURE / AFP via Getty Images)