Amazon announced it will invest $5 billion in AI company Anthropic immediately and up to an additional $20 billion tied to commercial milestones, expanding their existing partnership. This follows Amazon's previous $8 billion investment in Anthropic.

Under the expanded agreement, Anthropic committed to spend more than $100 billion over the next ten years on Amazon Web Services technologies. Anthropic will secure up to 5 gigawatts of capacity using Amazon's Trainium chips, including current and future generations, to train and power its Claude AI models.

The partnership includes access to Trainium2, Trainium3, Trainium4, and future chip generations. Anthropic will also utilize tens of millions of Amazon's Graviton CPU cores. The collaboration encompasses significant Trainium3 capacity expected to come online this year and expanded international inference capabilities in Asia and Europe.

AWS customers will gain access to Anthropic's Claude Platform directly through their existing AWS accounts, eliminating the need for additional credentials or billing relationships. The platform will integrate with existing AWS access controls and monitoring systems.

The companies previously collaborated on Project Rainier, described as one of the world's largest AI compute clusters with nearly half a million Trainium2 chips. More than 100,000 customers currently run Anthropic's Claude models on AWS through Amazon Bedrock.

"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," said Andy Jassy, Amazon's CEO.

Dario Amodei, Anthropic's CEO, stated that the collaboration will allow the company "to continue advancing AI research while delivering Claude to our customers, including the more than 100,000 building on AWS."