Enlarge (credit: Akos Stiller/Bloomberg via Getty Images) AMD is to buy Finnish artificial intelligence startup Silo AI for $665 million in one of the largest such takeovers in Europe as the US chipmaker seeks to expand its AI services to compete with market leader Nvidia. California-based AMD said Silo’s 300-member team would use its software tools to build custom large language models (LLMs), the kind of AI technology that underpins chatbots such as OpenAI’s ChatGPT and Google’s Gemini.