The article discusses the investigation launched by US antitrust enforcers into potential anti-competitive practices by leading artificial intelligence (AI) companies like Google and Microsoft. The investigation aims to examine whether these tech giants have engaged in unfair tactics that stifle competition in the AI industry. Key points include: 1) The probe is in its early stages and has not yet alleged any wrongdoing. 2) It seeks to understand the business practices of AI companies and their potential impact on competition. 3) The investigation reflects growing concerns about the market power of tech giants in the AI sector. 4) AI is seen as a critical technology that could reshape various industries, making it crucial to ensure fair competition. 5) The probe highlights the increasing scrutiny of big tech companies by antitrust regulators.