Noam Shazeer, Google's vice president of engineering and a co-lead of its Gemini models, said on June 17, 2026 that he is leaving the company to join OpenAI. The move pulls one of the most decorated researchers in modern AI — a co-author of the original Transformer paper — out of Google less than two years after the company paid to bring him back.
Shazeer announced the move in a post on X. He did not name a role at OpenAI, and neither company has detailed what he will work on.
Google brought Shazeer back to its DeepMind unit in August 2024 alongside fellow researcher Daniel De Freitas, as part of a licensing-and-talent partnership with Character.AI. The two had founded Character.AI after leaving Google in 2021, when the company declined to ship a chatbot product they had championed internally. The 2024 reverse-acquihire was widely read as Google paying to undo that earlier decision.
Key facts
- 01Noam Shazeer, Google VP of Engineering and co-lead of the Gemini models, announced on June 17, 2026 he is leaving for OpenAI.
- 02Shazeer returned to Google's DeepMind unit in August 2024 as part of a partnership with Character.AI, which he co-founded after leaving Google in 2021.
- 03His exit lands weeks after Google unveiled Gemini 3.5 Flash and the Gemini Spark agent at I/O.
- 04OpenAI filed confidentially for an IPO earlier in June 2026, one of the most-watched tech listings on deck.
- 05Daniel De Freitas, who returned to Google with Shazeer in 2024, is not part of the announced move.
The timing is awkward. Shazeer's exit lands only weeks after Google used its I/O developer conference to unveil Gemini 3.5 Flash and the Gemini Spark agent, the company's most aggressive push yet to close the gap with OpenAI on consumer and agentic products. Losing a Gemini co-lead in the immediate wake of that launch cycle is the kind of departure that gets noticed inside the building.
De Freitas, who returned to Google with Shazeer in 2024, was not named in the announcement and there is no indication he is following his longtime collaborator out the door.
For OpenAI, the hire arrives in the middle of a corporate sprint. The ChatGPT maker filed confidentially for an initial public offering earlier in June 2026, setting up one of the most closely watched tech listings in years. Adding a researcher of Shazeer's stature to the roster ahead of a roadshow is the sort of signal investment bankers tend to like.
It also continues a pattern. Senior AI researchers have moved between Google, OpenAI, Anthropic, Meta and xAI at a pace that would have been unthinkable in any prior technology cycle, with compensation packages for top researchers routinely reported in the eight figures. Each defection of a named lead reshuffles the perceived pecking order among the labs even before the next model ships.
Shazeer's individual track record is what makes this particular move sting. He was a co-author of "Attention Is All You Need," the 2017 Google paper that introduced the Transformer architecture underlying essentially every frontier model in production today, including Gemini, ChatGPT, Claude and Llama. He spent years inside Google Brain before the Character.AI detour, then returned to help steer Gemini. There are very few researchers whose résumé reads like that.
What is not yet clear is how much of Gemini's roadmap Shazeer was personally driving versus co-stewarding with a broader leadership group inside DeepMind. Google has a deep bench — Demis Hassabis, Jeff Dean, Oriol Vinyals and others — and the company will almost certainly frame this as a single departure from a much larger org. The honest answer on impact will only show up in the next two or three Gemini releases.
The broader read is that the talent market for top AI researchers is now the binding constraint on lab strategy, ahead of compute and ahead of data. OpenAI is willing to spend on senior hires in the run-up to a public listing because the market is going to price the company on its ability to keep shipping frontier capability. Google, which thought it had bought stability by paying to bring Shazeer back in 2024, just got a reminder that in this cycle no hire is permanent — and that the cost of losing a Gemini co-lead is paid not in salary lines but in the pace of the next model.
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