Anthropic takes $5B from Amazon, commits $100B cloud spend

Amazon is investing another $5 billion in Anthropic, bringing its total stake to $13 billion. In return, Anthropic has committed to spend over $100 billion on AWS over the next decade, securing up to 5 GW of compute capacity for training and running Claude. The deal centres on Amazon's custom silicon: Graviton CPUs and Trainium AI accelerators, covering Trainium2 through the not-yet-released Trainium4. The structure mirrors Amazon's February deal with OpenAI, where a $50 billion investment was partly delivered as cloud credits. The arrangement arrives as VCs reportedly circle Anthropic with offers valuing the company at $800 billion or more, suggesting a fresh funding round may be imminent.