Nobel Laureate John Jumper Leaves Google DeepMind for Anthropic Amid Escalating AI Talent War

John Jumper, the senior research scientist who shared a Nobel Prize in 2024 for co-creating the protein-structure prediction system AlphaFold, announced Friday that he is departing Google DeepMind to join AI startup Anthropic — the latest in a string of high-profile exits from Alphabet's AI research division.

"After nearly nine years, I have decided to leave Google DeepMind and join Anthropic," Jumper wrote in a post on X.

Jumper holds the title of VP, Engineering Fellow, at Google DeepMind, according to his LinkedIn page. He shared the 2024 Nobel Prize with DeepMind CEO Demis Hassabis for their work on AlphaFold, a system that has predicted more than 200 million protein structures and significantly compressed timelines for biological and medical research.

Hassabis responded to Jumper's announcement on X, writing: "What we achieved with AlphaFold changed the world, and showed the field what was possible with AI for science and medicine, lighting the way for how AI can benefit humanity."

Google DeepMind confirmed the departure in a statement to reporters. "We are grateful for John's significant contributions to Google DeepMind's work in advancing science and AI. We wish him well in his next chapter," a spokesperson said.

Jumper's move comes just days after Noam Shazeer, a vice president of engineering at Google and co-lead of its Gemini AI models, announced he was leaving the company to join IPO-bound OpenAI — underscoring the intensity of the competition for elite AI researchers across the industry.

Technology giants including Meta and Alphabet, alongside AI startups such as Anthropic and OpenAI, are engaged in a sustained competition for top-tier research and engineering talent as each organization races to develop next-generation AI systems.

Jumper is joining Anthropic at a particularly turbulent moment for the company. The startup is currently in a standoff with the U.S. government following a White House directive ordering it to restrict the export of its AI models Fable and Mythos to foreign nationals and customers outside the United States, citing national security concerns. Anthropic pulled both models within roughly 90 minutes of being notified of the directive, according to accounts of the episode. The company disputes characterizations of a security vulnerability in Fable 5 as a "jailbreak," describing it instead as a narrow, already-patched issue.

Anthropic is also hosting a science event on June 30, which may offer more clarity on the company's research direction — and potentially on Jumper's role there.

In his X post, Jumper described Google DeepMind as a "special place" and said he remained interested in its future work. Anthropic did not immediately respond to a request for comment regarding his new position.

The departures of Jumper and Shazeer within days of each other highlight the sustained pressure Google faces in retaining the researchers whose work has defined its AI ambitions. How Anthropic deploys Jumper's expertise — particularly in scientific applications of AI — is likely to draw close attention from competitors and policymakers alike.

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