In a recent SEC filing, Microsoft labelled OpenAI both a "strategic partner" and a competitor. The filing, which was part of a periodic financial performance and conditions report, noted OpenAI as its rival in various segments while emphasising their partnership. This dual characterization comes amid antitrust investigations in the UK, US, and EU concerning the companies' collaboration. Microsoft's complex relationship with OpenAI includes significant investments and shared technology, such as integrating GPT-4 into Microsoft's services like "Copilot" and "Bing"​ .