Google just lost the last father of the Transformer to OpenAI. All 8 authors are gone now.

Noam Shazeer confirmed he's leaving Google to join OpenAI.

Google paid $2.7 billion to bring him back from Character.AI less than two years ago.

He was co-leading Gemini. The model Google staked its entire AI future on.

With his departure, all 8 co-authors of "Attention Is All You Need" — the paper that invented the Transformer — have now left Google.

That paper built GPT. Built Claude. Built Gemini. Built every foundation model your enterprise runs on.

OpenAI is heading toward IPO. They just added the architect of the technology their competitors depend on. Mark Chen confirmed Shazeer is now "lead for architecture research."

Google's response so far: silence.

This isn't an exec move. This is a structural talent collapse at the company that invented the modern AI era.

If your stack depends on Gemini, ask your Google rep one question: who's left to build Gemini 4?

Because the bench that was supposed to deliver it just walked out the door.

And OpenAI's S-1 just got a lot more interesting.
SOURCE: https://www.reuters.com/technology/googles-gemini-co-lead-noam-shazeer-join-openai-2026-06-18/
VERIFIED: Reuters, CNBC, The Information
SIGNAL: Enterprise AI vendor stability is now a board-level risk. When the talent building your foundation models leaves for your competitor, your multi-year roadmap just became a guess.