Nobel Laureate John Jumper Leaves Google DeepMind, Joins Anthropic

On June 19, 2026, John Jumper, 2024 Nobel Prize in Chemistry winner and core leader of AlphaFold, announced his departure from Google DeepMind after nearly nine years to join AI company Anthropic. This follows Noam Shazeer, co-author of the Transformer paper and co-lead of Gemini, leaving for OpenAI just two days earlier. Google losing two top AI scientists within 48 hours has sent shockwaves through the industry.

Event Details

John Jumper confirmed his departure on X, stating he would take a break before formally joining Anthropic. He thanked DeepMind CEO Demis Hassabis for entrusting him with leading the AlphaFold team just six months after his PhD. Hassabis responded, acknowledging their nine-year collaboration and calling AlphaFold a "world-changing" achievement. Anthropic confirmed Jumper's upcoming arrival but did not disclose his specific role.

Background of Talent Exodus

Jumper's departure is not an isolated event. Two days earlier, Noam Shazeer—core author of the Transformer paper and Gemini co-lead, whom Google had lured back from Character.AI for approximately $2.7 billion—announced he was joining OpenAI. Over the past year, Google DeepMind has also lost David Silver (lead of AlphaGo/AlphaZero, now founding a startup) and key members of the Gemini reasoning team. Incomplete statistics show that more than 20 top researchers have left DeepMind/Brain in the past eight years.

Root Cause Analysis

Industry insiders point to Google's "big company disease":

• Bureaucratic organization: Fierce competition for internal compute resources and inefficient cross-team collaboration. Llion Jones, another Transformer co-author, once said, "The bureaucracy makes me feel like I can't get anything done."
• Strategic divergence: Google tries to cover all bases, lacking the "all-in on LLM" focus of startups. Reports indicate Google leased precious TPU compute to competitor Anthropic.
• Incentive structure: Internal rewards favor creating new products over maintaining existing ones, leading to product line chaos (e.g., multiple parallel AI coding tools).
• Compensation competition: OpenAI and Anthropic are approaching IPOs, making pre-IPO stock options highly attractive to top talent.

Industry Impact

Jumper's move to Anthropic marks a new phase in the AI for Science race. Anthropic had previously acquired bio-AI company Coefficient Bio for $400 million and launched Claude for Life Sciences. Jumper's arrival will fill its gap in AI+biology, directly competing with DeepMind's Isomorphic Labs.

OpenAI is also expanding in life sciences, releasing the biomedical reasoning model GPT-Rosalind in April this year and partnering with multiple pharmaceutical companies. The three frontier AI labs are shifting their competitive focus from language models to life sciences.

Google's Predicament

Google's model competitiveness is declining. On the Artificial Analysis Intelligence Index, its strongest model, Gemini 3.1 Pro, ranks only fifth, behind Anthropic, OpenAI, and China's Zhipu AI. The highly anticipated Gemini 3.5 Pro has been repeatedly delayed, with internal employees revealing a sense of frustration. One employee remarked, "You can't blame Noam for leaving; he won't be the last."