Anthropic: Client, Investment and RivalThin moat

The single most complicated relationship in this app runs three directions at once. Anthropic is Google Cloud's largest customer, having committed an estimated $200 billion over five years for cloud and TPU capacity¹. Alphabet is also one of Anthropic's largest shareholders, with a stake of roughly 14% acquired from an initial $300 million investment in 2023². And Anthropic's Claude competes directly with Gemini for the same enterprise and consumer AI budgets.

Each leg makes the others work. The investment helped fund the customer; the customer's spending validates the TPU programme that differentiates Google Cloud from AWS and Azure; the TPU programme gives Alphabet an alternative to buying Nvidia silicon. Whether one calls this ecosystem building or circular financing depends largely on disposition — both describe the same money, and the same criticism attaches to Nvidia's stakes in its own customers.

What makes it genuinely awkward for owners of Alphabet is the accounting. Paper gains on the Anthropic stake have at times swamped the operating business — quarterly net income has been inflated by tens of billions of unrealised marks³ — which makes reported earnings close to useless for judging how Google itself performed. Watch operating income rather than net income, watch whether Anthropic's commitments convert into recognised cloud revenue on schedule, and remember that a mark which can add $100 billion to a quarter can subtract it just as quickly.