Amazon shares rose about 2.8% to $255.26 in premarket trading Tuesday, April 21, after the company said it will invest up to $25 billion more into Anthropic. Amazon has already invested $8 billion in the artificial intelligence startup, bringing its total commitment to as much as $33 billion.
The deal announced Monday, April 20, includes $5 billion upfront at Anthropic’s latest valuation of about $380 billion, with up to $20 billion in additional funding tied to commercial milestones. In return, Anthropic said it will spend more than $100 billion on Amazon Web Services over the next decade, securing up to 5 gigawatts of compute capacity on Amazon’s Trainium chips to train and run its Claude models.
“Anthropic’s commitment to run its large language models on AWS Trainium for the next decade reflects the progress we’ve made together on custom silicon, as we continue delivering the technology and infrastructure customers need to build with generative AI,” Amazon CEO Andy Jassy said in the announcement.
Anthropic said the expanded agreement reflects a deeper alignment on long term infrastructure. “This expanded partnership reflects our shared commitment to building reliable and scalable AI systems,” the company said in its announcement.
Damilare Odedina
Scaling AI through long term infrastructure bets
The structure of the deal underscores how leading AI partnerships are shifting toward long term compute agreements tied to equity investment. Rather than a traditional venture bet, the arrangement secures future demand for Amazon’s data centers and custom chips at a time when access to high performance compute remains constrained.
Anthropic said it has secured capacity across current and future generations of Trainium chips, with nearly 1 gigawatt of Trainium2 and Trainium3 infrastructure expected to come online by the end of the year. The agreement also extends to future chips, including Trainium4, which Amazon has not yet released.
The partnership strengthens Amazon’s position as a core infrastructure provider for advanced AI development. Anthropic will continue to use other cloud providers, but the scale of this agreement makes Amazon its largest partner by long term commitment.
Market reaction and what analysts are watching
The market reaction reflects growing investor focus on long term AI driven revenue visibility. By tying capital investment to a decade long cloud spending commitment, Amazon effectively secures a significant stream of high margin infrastructure demand linked to one of the most prominent AI developers.
The announcement comes as competition for AI compute intensifies, with companies increasingly locking in capacity years ahead to support model training and deployment at scale. Amazon reports first quarter earnings on April 29. Analysts expect continued strength across e commerce, cloud computing, and advertising.
Damilare Odedina
