Amazon has invested an additional $5 billion in AI startup Anthropic, bringing its total backing to $13 billion as of April 20, 2026. The deal includes up to $20 billion more tied to milestones, while Anthropic pledges over $100 billion on AWS infrastructure over the next decade.
Deal Breakdown
This builds on Amazon’s prior $8 billion investments, maintaining its minority stake without board seats.
Anthropic will use AWS Trainium chips exclusively to train Claude models for the next decade, leveraging Amazon’s custom silicon to reduce costs. The collaboration expands Project Rainier and integrates Claude deeper into AWS services.
Amazon CEO Andy Jassy highlighted Trainium’s “high performance at significantly lower cost,” positioning AWS against Nvidia’s dominance.
Amazon’s stock rose 3% following the announcement, signaling investor confidence in its AI push. The “circular” deal secures AWS revenue while fueling Anthropic’s growth amid fierce competition from OpenAI and Google.
Anthropic’s revenue has surged, with quarterly figures tripling to over $30 billion recently.
This cements AWS as Anthropic’s primary cloud provider, potentially accelerating Claude advancements like the new Mythos model. For Amazon, it drives Trainium adoption and counters Microsoft-OpenAI ties.
Experts see it as a bet on “AI infrastructure supremacy,” with $100 billion AWS spend reshaping cloud AI economics. Investors anticipate more such mega-deals as AI compute demands escalate in 2026.
