Google is building custom AI chips to sell to outside customers, competing directly with Nvidia for data center revenue.

What happened: Google is positioning its Tensor Processing Units (custom chips for AI computing) as a product for external customers, moving beyond internal use. The company is backing a facility called Lake Mariner in western New York with a $3.2 billion（約5100億円） financial guarantee, and plans to lease capacity built on Google chips to Anthropic.

Why it matters: Google is following Nvidia's model of selling specialized hardware to AI companies rather than keeping it only for itself. This shift lets Google turn its chip technology into a direct revenue stream while reducing dependence on third-party chipmakers. Amazon, Microsoft, and Meta are also investing in custom chips, signaling a broader industry move toward controlling more of the AI infrastructure chain.

What to watch: The Lake Mariner facility and Anthropic partnership represent Google's first major test of selling chip capacity to an outside customer. This move will show whether Google can compete with established chip suppliers in the competitive AI data center market.