Amazon is one of Anthropic’s largest investors.  Noah Berger/Getty Images for Amazon Web Services In a bid to compete with a slew of A.I.-enabled voice assistants like Microsoft (MSFT)’s Copilot, Google’s Gemini and even Apple’s Siri, Amazon (AMZN) will soon upgrade Alexa to be powered by Anthropic’s Claude A.I. model, Reuters reported on Friday (Aug. 30). The upgraded version of Alexa is...