BRUSSELS (Reuters) - European Union antitrust chief Margrethe Vestager, who has been looking into Big Tech's partnerships with AI start-ups, met on Friday fast-growing French start-up company Mistral AI and said the sector needs more competition.

In February, Microsoft invested $16 million in Mistral AI and partnered with them to make its artificial intelligence models available through its Azure platform. It has also invested in ChatGPT owner OpenAI.