Amazon CEO Andy Jassy Fortune/Reuters Amazon's $8 billion Anthropic stake has soared to $74 billion. The companies built a successful partnership, with AWS running Anthropic models for cloud customers. Anthropic said on Monday it filed confidentially for an IPO. Amazon's investment in Anthropic has become one of the most lucrative bets in the cloud giant's history. Amazon's original $8 billion investment in the AI startup has swelled into a stake worth roughly $74 billion on paper as Anthropic