Amazon wants to break Nvidia’s hold on PyTorch, the free toolkit used to build most AI apps, so that more developers run their apps on alternative chips like its own.Also, AI assistant startup Town nabbed a unicorn valuation on Monday, announcing a $108 million Series B round co-led by Forerunner Ventures and Menlo Ventures.And AI companion app Tolan has raised another $30 million after attracting more than 250,000 active users.Learn more about your ad choices. Visit podcastchoices.com/adchoices