Amazon and Anthropic are rewriting the financial plumbing of one of the largest AI partnerships in history. Starting in 2027, Amazon will pay for Anthropic’s AI models, including Claude, based on tokens consumed rather than compute hours used on AWS.

The $100 billion relationship gets a new price tag

The pricing shift is part of a renegotiated agreement that follows a massive expansion of the Amazon-Anthropic collaboration announced in April 2026. Under that deal, Anthropic committed over $100 billion to AWS over 10 years for up to 5 gigawatts of compute capacity.

The commitment includes nearly 1 gigawatt of Trainium chips, Amazon’s custom silicon, expected to be deployed by the end of 2026. Amazon, for its part, has invested an additional $5 billion in Anthropic, with the potential for another $20 billion on top of that. Prior investment by Amazon in Anthropic had already totaled $8 billion before these recent rounds.

Why tokens change the math