Google DeepMind has lost John Jumper — the 2024 Nobel laureate in Chemistry and the director who led AlphaFold from research paper to two-million-user platform — to Anthropic, the company announced on June 19. The departure lands two days after Noam Shazeer, co-inventor of the transformer architecture and co-lead of the Gemini model family, confirmed he is joining OpenAI. Together they extend a run of high-profile exits that began in January when reinforcement-learning VP David Silver left to found Ineffable Intelligence.
In under six months, DeepMind has lost its leads across three of the domains it built its global reputation on: protein-structure prediction, transformer-scale language modelling, and reinforcement learning.
Key Takeaways
- Nobel laureate John Jumper, DeepMind Director and VP Engineering Fellow who co-created AlphaFold, has left Google after nine years for Anthropic.
- The move follows Noam Shazeer's exit to OpenAI two days earlier — less than two years after Google paid $2.7B to reacquire him — and David Silver's Januar.
What Jumper built — and what Anthropic is buying
Jumper shared the 2024 Nobel Prize in Chemistry with DeepMind CEO Demis Hassabis for AlphaFold, the AI system that predicted the 3D structure of more than 200 million proteins — effectively solving a 50-year grand challenge in biology. The tool is now used by more than 2 million researchers in 190 countries and has become a foundational instrument in drug discovery and vaccine design.
For Anthropic, the hire is not a status acquisition. The company has been constructing explicit AI-for-science infrastructure throughout 2026: it opened wet labs and announced in February two major research partnerships — with the Allen Institute and Howard Hughes Medical Institute's Janelia Research Campus — to build multi-agent systems capable of compressing months of single-cell genomics and connectomics analysis into hours. Recruiting the researcher who architected the defining AI-for-biology breakthrough of the past decade gives that programme a credible scientific anchor.
Jumper said he plans to take time to recharge before starting at Anthropic. Demis Hassabis posted a public farewell on X, thanking Jumper for their 'extraordinary partnership' and calling AlphaFold a system that 'changed the world.' Google DeepMind's official statement described his contributions as 'significant' — measured language for the loss of a sitting Nobel laureate.
The Shazeer context makes the pattern harder to dismiss
One departure can be personal. Two in 48 hours, spanning the company's flagship biology and language-model programmes, looks structural.
Shazeer's case is particularly pointed. Google brought him back in August 2024, paying roughly $2.7 billion — structured primarily as a technology licence from his startup Character.AI — and installing him as VP of Engineering and Gemini co-lead. Less than two years later he announced on X that he is joining OpenAI as Lead for Architecture Research. OpenAI CEO Sam Altman called Shazeer 'one of the people I have most wanted to work with since OpenAI's early days.'
Shazeer's sparse Mixture-of-Experts and Multi-Query Attention designs are core to how frontier models cut inference cost at scale. His move hands OpenAI a directly applicable efficiency edge as the company scales ChatGPT under a reported $14 billion operating loss in 2026.
Silver's bet underscores the diversity of the talent drain
David Silver, DeepMind VP of Reinforcement Learning and the architect of AlphaGo, AlphaZero, and MuZero, left in January to found Ineffable Intelligence in London. The stealth startup, incorporated in November 2025, is betting that reinforcement learning — not LLMs trained on static human data — is the path to superintelligence. Sequoia Capital is reportedly leading a seed round that would value the company at around $4 billion pre-money, with Nvidia, Google, and Microsoft also in talks — which would make it the largest seed round ever raised by a European startup if completed.
The three exits represent different career calculations: Jumper joins an established rival with a clear science mandate; Shazeer moves to the market leader ahead of its IPO; Silver bets on founding something new. But the directional signal is consistent — elite researchers who built DeepMind's core identity are choosing to apply that expertise elsewhere.
Key facts
- Jumper held the title Director and VP Engineering Fellow at Google DeepMind; he joined in 2017.
- AlphaFold is used by more than 2 million researchers in 190 countries.
- Shazeer co-authored 'Attention Is All You Need' (2017), the paper that introduced the transformer. Google paid roughly $2.7B to bring him back in August 2024.
- Silver's Ineffable Intelligence was incorporated November 2025; its Sequoia-led seed round would set a European record if closed.
- Anthropic announced Allen Institute and HHMI partnerships on February 2, 2026, as part of a dedicated AI-for-science buildout.
- Anthropic has raised more than $11.5B in total funding, including investment from Google — the same company all three researchers just left.
What to watch
Track whether Jumper takes a scientific-leadership role inside Anthropic's biology programme or moves into broader research; his specific mandate will signal how seriously the company intends to compete with DeepMind on AI-for-science, not just AI-for-chat. Watch also for Google's response — whether it promotes internally or attempts another expensive external rehire — as the answer will reveal how DeepMind's leadership reads the cultural problem underneath the personnel losses.
Source: the_decoder, scmp_tech
