Jack Clark

Overview

Most profiles of Jack Clark start with the money — the Bloomberg reporter who became a billionaire when Anthropic’s valuation hit $965 billion. That story is real, but it misses what made Clark the odd one out among Anthropic’s seven co-founders: he was never an AI researcher. Clark spent the decade before the company building the policy infrastructure the AI industry now leans on — co-founding Stanford’s AI Index, serving on the U.S. government’s first AI advisory committee, co-chairing an OECD working group, and writing a newsletter whose stated mission is to make “an increasingly fast-moving technical world ‘legible’ to a large number of people” (Import AI). He is co-founder and head of policy of Anthropic, the company behind the Claude AI assistant (VnExpress International).

From the newsroom to OpenAI

Clark’s route into artificial intelligence ran through journalism, not computer science. He worked as a technology journalist at Bloomberg before leaving for OpenAI in 2016 (VnExpress International). Business Insider’s Alistair Barr, a former Bloomberg colleague, puts the exit from journalism in 2015 and remembers Clark ignoring his advice to stay a reporter (Talking Biz News). Clark’s own account describes him as a technical journalist writing about distributed systems, quantum computers, and AI research for publications ranging from Bloomberg BusinessWeek to The Register (Import AI).

At OpenAI, Clark became policy director, a role that put him at the intersection of the lab’s research and the outside world (Import AI). It was during his OpenAI years that he started the two projects that would define his public identity: in 2017 he helped found the AI Index steering committee at Stanford — an annual report tracking global AI research and capability benchmarks — where he served as co-chair through 2024 (Import AI), and he began writing Import AI, a newsletter synthesizing AI research for technical and policy audiences.

The 2021 break with OpenAI

The founding of Anthropic is usually told as a researchers’ story: Dario Amodei, OpenAI’s former VP of research, started the company with his sister Daniela, OpenAI’s former VP of safety and policy, and at least nine other OpenAI employees joined them, raising $124 million in a Series A led by Skype co-founder Jaan Tallinn (AI Business). Clark was part of that exodus. AI Business lists him among the founding staff as “policy director [and former technology journalist],” and dates the departures to between December 2020 and January 2021, with Anthropic registering in California on February 3 (AI Business). The seven co-founders were Amodei and his sister plus Clark, Sam McCandlish, Tom Brown, Chris Olah, and Jared Kaplan (VnExpress International).

Anthropic set itself up as a Delaware public benefit corporation — a for-profit company whose charter says it works for the public benefit (AI Business). Clark took the title of co-founder and head of policy (Import AI).

The policy-infrastructure builder

What distinguishes Clark’s résumé from his co-founders’ is the accumulation of institutional roles around AI governance. He was an inaugural member of the U.S. National Artificial Intelligence Advisory Committee (NAIAC) from 2021 to 2024 (Import AI). The Information Technology and Innovation Foundation’s bio of Clark lists him as co-chair of the AI Index Steering Committee at Stanford’s Human-Centered AI institute, an expert member of the Global Partnership on Artificial Intelligence, co-chair of the OECD’s working group on AI and Compute, and a non-resident research fellow at Georgetown’s Center for Security and Emerging Technology (ITIF). He has also served on advisory councils and working groups for the Center for a New American Security and the OECD (Import AI).

Import AI itself is part of that project. Clark’s about page frames it as an attempt to solve the information asymmetries of a fast-moving technical world so that “we will naturally build the infrastructures necessary to maintain stability in an era of great change and possibility” (Import AI). The newsletter runs science fiction stories he writes alongside the research synthesis, and his listed hobbies include hiking and “talking to language models” (Import AI).

A public voice in 2026

In 2026 Clark became one of Anthropic’s most quoted public faces. At the Semafor World Economy Summit in Washington, the 37-year-old told the audience that studying English literature and creative writing — not computer science — turned out to be “extremely relevant for AI in a way that I think people wouldn’t have predicted,” because history and “the kind of stories that we tell ourselves about the future” matter to a field racing into the unknown (VnExpress International). He argued that as AI takes over routine technical work, degrees that teach analytical thinking and the ability to combine knowledge across disciplines could gain value, and that young people should avoid “rote programming” in favor of “knowing the right questions to ask” (VnExpress International).

In a BBC interview the same year, Clark went further on regulation: governments may need to make a mandatory “kill switch” for AI systems a legal requirement, and to verify it through third parties (bdnews24). He declined to put a number on the risk of AI wiping out humanity — such statistics were “not that useful” — but said leaving the industry unregulated amounted to “rolling dice with immense risks,” and that “we have to change the course of this industry” (bdnews24).

By then the company’s scale had changed his personal profile completely. Anthropic raised $65 billion in May at a post-money valuation of $965 billion, making it the world’s most valuable AI startup, and Forbes’ estimate put Clark’s fortune at $15.5 billion as of September (VnExpress International). Clark declined a Business Insider interview about the money — “‘Haha, Ali, thanks, but really not my style,’ he replied,” Barr wrote — with the reporter describing him as “among the gentlest, kindest, and most self-deprecating people I’ve ever met” and “not classic billionaire material” (Talking Biz News).

What this profile does not claim

It does not give Clark’s exact birth date or birthplace — no fully-read source provides them. The December 2020 departure date from OpenAI is approximate: the sources only support a December 2020–January 2021 window. The $15.5 billion fortune is a Forbes estimate reported secondhand, not a confirmed holding. The profile does not assert the current status of his OECD or GPAI roles beyond what ITIF’s bio states, and it does not repeat the unconfirmed Forbes-mirror claims about subscriber counts or residence — Import AI’s own 70,000-per-week figure is the one used.