THE MAN WHO INVENTED THE TRANSFORMER JUST WALKED OUT OF GOOGLE AND INTO OPENAI Noam Shazeer, co-author of the 2017 paper that introduced the Transformer architecture and Google’s own co-lead of Gemini, has defected to OpenAI in one of the most significant talent moves the AI industry has seen in years. This is not just another researcher switching employers. Shazeer is a co-author of the paper “Attention Is All You Need,” the document that gave the world the Transformer — the foundational architecture sitting underneath every major language model in existence today, including GPT, Gemini, and Claude. Without that paper, none of what we call modern AI would look the way it does. Google paid $2.7 billion in 2024 to bring Shazeer back after he had spent time building Character.AI. Two years later, he is gone again — this time to their primary rival. Sam Altman publicly welcomed him, calling him one of the people he had “most wanted to work with since the very beginning of OpenAI.” At OpenAI, Shazeer will serve as Lead for Architecture Research — the person responsible for the underlying structure of future models. If OpenAI’s next generation of models turns out to be a step change better than anything Google produces, people will be pointing to this hire as the moment the gap opened. Google is losing the very people who built the playbook. That should concern everyone watching this race. Keywords: Noam Shazeer OpenAI, Transformer architecture, Google DeepMind talent loss, AI research leadership