Amazon is investing up to $25 billion in Anthropic, the developer of the Claude model, while simultaneously holding a $50 billion stake in OpenAI. Together, Amazon's direct AI investments add up to as much as $83 billion. The bet is not on any particular model but on infrastructure: Amazon Web Services is to become the indispensable platform for both of the leading AI labs.
The Investment Package
The new Anthropic investment comes in two tranches. Five billion dollars flows immediately, at Anthropic's current valuation of $380 billion. A further $20 billion is tied to commercial milestones that Anthropic must hit in the coming years. That condition matters: Amazon only pays the second tranche if Anthropic's business actually scales.
In return, Anthropic has committed to spending more than $100 billion on Amazon Web Services over ten years. For that, Anthropic receives access to up to five gigawatts of computing power on Amazon's Trainium chips. Nearly one gigawatt of capacity for second- and third-generation Trainium chips is expected to come online by the end of 2026.
This is not Amazon's first investment in Anthropic. The company had already invested $8 billion before this new deal was struck. Combined, Amazon's total stake in Anthropic reaches up to $33 billion. In February 2026, Amazon also closed an investment of up to $50 billion in OpenAI, as part of a funding round that valued OpenAI at $730 billion. Amazon's direct AI investments now add up to as much as $83 billion.
The Strategy: Infrastructure Over Model Bets
Amazon's approach differs fundamentally from its competitors. While Microsoft has committed exclusively to OpenAI and Google is developing its own models with Gemini, Amazon is financing both leading external AI labs simultaneously and committing both to AWS as their primary infrastructure. Anthropic pays $100 billion for AWS services; OpenAI is separately expanding its existing Amazon contract by a further $100 billion over eight years.
The result is an architecture in which AWS becomes the neutral platform for competing AI systems. Amazon's revenues from the AI boom depend hardly at all on which model is dominant in five years. Anthropic CEO Dario Amodei described the partnership as critical to scaling Anthropic's models at a pace that would not be achievable without external compute.
For enterprise customers, the deal has immediate consequences. Until now, companies wanting to use Claude had to sign separate contracts with Anthropic. Through the new AWS integration, customers can access Anthropic's models directly through their existing AWS account, including familiar billing and compliance features. That significantly lowers the barrier to entry and should expand Anthropic's customer base.
The Valuation Question
The sums invite scrutiny. Anthropic is valued at $380 billion but is not yet profitable. OpenAI sits at $730 billion after its latest round, also without demonstrated profitability at scale. Together the two startups carry a combined valuation of more than one trillion dollars, sustained by the expectation that AI will eventually justify these financing rounds.
For Amazon, the calculation looks different. The Anthropic investment is partially hedged by the contractually secured $100 billion in AWS spending. The money does not flow purely as venture capital; it locks in ten years of revenue. Whether Anthropic's $380 billion valuation is justified matters less to Amazon than whether Anthropic honors its cloud contract.
AWS had long suffered from the perception that it was falling behind Azure in AI. Microsoft had secured OpenAI early as a flagship partner and used that relationship as a marketing argument for its cloud services. With the new contracts, Amazon can now offer enterprise customers access to all the leading AI models through a single platform.
Outlook
The AI funding race is condensing into a contest between three cloud providers over the infrastructure role. Microsoft ties OpenAI to Azure; Google develops its own models with DeepMind and Gemini and anchors them to Google Cloud; Amazon secures the AWS dependency of external labs through investment. For enterprise customers this means: anyone wanting to use AI will increasingly do so through existing cloud contract relationships, not through independent providers.
The next checkpoint comes when the milestone-linked $20 billion from the Anthropic contract is due to be unlocked. The specific milestones Amazon and Anthropic agreed on have not been made public. Analysts expect further detail in the coming months when Anthropic reports its first official annual revenue figures.