Advertisement Amazon announced another $4 billion investment in AI startup Anthropic on Friday.The deal includes an agreement for Anthropic to use Amazon's AI chips more. The cloud giant is trying to challenge Nvidia and get developers to switch away from those GPUs.Amazon's Trainium chips are about to get a lot busier. At least that's what Amazon hopes will happen after it pumps another $4 billion into AI startup Anthropic. The two companies announced a huge new deal on Friday that brings Amazon's total i ...