One of Google's most prominent artificial intelligence researchers is switching sides. Noam Shazeer, a vice president of engineering at Google and co-lead of its Gemini AI models, said Wednesday that he is leaving to join rival OpenAI, according to Reuters. He shared the news on X, writing that he was excited to make the move.
Shazeer is not a routine hire. According to The Information, he is joining OpenAI as lead for architecture research. He is widely credited as a co-inventor of the Transformer, the underlying technology that powers today's generative AI boom. He also founded the chatbot startup Character.AI, and rejoined Google in 2024 as part of a deal involving that company, per The Information and the Indian Express — meaning he spent less than two years back at Google before departing.
The context matters: OpenAI is IPO-bound, Reuters reports, and the hire lands amid an intensifying competition for top AI talent between the leading labs. OpenAI chief executive Sam Altman framed the recruitment as a long time coming, saying it was "10 years" in the making, according to reporting cited by MSN.
Markets reacted modestly. TradingView reported that Google parent Alphabet's stock (GOOG) was down 0.3% on the news, and outlets including Barron's examined what the departure could mean for the company. Coverage from citybiz framed the move as a major talent win for OpenAI over Google.
Why it matters: in the AI race, the people who design the core architecture are as valuable as the products themselves, and losing a Transformer co-inventor from the Gemini team to a direct competitor signals just how fierce — and high-stakes — the fight for elite researchers has become.