Vint Cerf, TCP/IP co-creator, retires from Google after 20 years

Vinton Cerf, the 83-year-old computer scientist who co-designed TCP/IP with Robert Kahn in the 1970s, is stepping down as Google’s chief internet evangelist, a role he’s held since 2005. The departure was announced at the Laude Institute’s Open Frontier conference, where UC Berkeley’s Dave Patterson recognized him from a panel; Google later confirmed the retirement. Cerf’s foundational networking work — the protocols that let disparate networks interoperate — earned him a Turing Award, the Presidential Medal of Freedom, and numerous honorary degrees.

Cerf appeared alongside other builders of long-lived open-source projects, including Keras creator François Chollet, Tcl’s John Ousterhout, and Databricks co-founder Matei Zaharia. Much of the discussion contrasted the decentralized, durable internet with today’s concentration of advanced AI models inside a few well-funded labs. Cerf argued the pendulum will swing back: as autonomous AI agents from different vendors begin coordinating with one another, they’ll require composability, interoperability, and formal standards — echoing the early internet’s protocol battles.

Notably, he broke with panelists who expect agents to simply converse in natural language. English is too ambiguous for machine-to-machine agreements, he said, invoking the childhood telephone game to illustrate how meaning degrades across a chain of imprecise handoffs. His implication carries real stakes: whoever defines agent interoperability standards early could wield outsized influence over the emerging “agentic economy,” much as TCP/IP’s authors shaped the internet.