TL;DR: Google has committed up to $40 billion to Anthropic — the largest single corporate AI investment on record — at a $350 billion valuation, just days after Amazon pledged $25 billion to the same company.

Google announced Thursday that it will invest up to $40 billion in Anthropic, the AI safety company behind the Claude model family, with $10 billion delivered immediately and as much as $30 billion more conditional on performance milestones. The deal values Anthropic at $350 billion and follows Amazon's commitment earlier this week of up to $25 billion — meaning Anthropic's two principal cloud backers have together pledged up to $65 billion, making the startup the most heavily capitalized private AI company in history by a wide margin.

  • Google is deploying $10 billion at closing, with up to $30 billion more tied to agreed performance milestones.
  • Anthropic's valuation at $350 billion is roughly triple its early-2025 figure.
  • Combined commitments from Google and Amazon now total up to $65 billion, dwarfing all prior private AI investment rounds.

The capital injection is partly a compute play. Anthropic has acknowledged an "inevitable strain" on its infrastructure driven by accelerating enterprise and consumer demand for Claude. The company already holds a tripartite arrangement with Google and Broadcom granting access to roughly 3.5 gigawatts of computing capacity — a footprint that would have been implausible for a non-hyperscaler just two years ago. This new tranche of capital is expected to deepen that buildout further.

Revenue figures underscore how fast Anthropic has grown to need it. The company's annualized run rate has surpassed $30 billion, up from $9 billion at the close of 2025 — a more-than-threefold jump in roughly four months. That figure now exceeds OpenAI's reported $24 billion run rate, placing Anthropic first among pure-play AI model companies by revenue. More than 1,000 enterprise customers are spending over $1 million annually on Claude services, a count that doubled since February alone. An IPO — potentially one of the largest in technology history — is increasingly discussed for later in 2026.

For Google, the deal fortifies its competitive position against Microsoft-backed OpenAI. The more pressing near-term question is whether U.S. or EU competition regulators will scrutinize the arrangement: both Google and Amazon now hold substantial stakes in the same company whose technology competes directly against their own AI products.