Noam Shazeer's $2.7 Billion Return to Google Ends in Under Two Years
Noam Shazeer, the vice president of engineering and co-lead of Google's Gemini AI model, announced on Wednesday that he is leaving the company to join OpenAI. This departure marks the end of a brief but costly return for Google, which spent $2.7 billion to bring him back in August 2024. Shazeer described it as a "difficult decision to move on" in a post on X. His exit is a significant blow to Google, as he was instrumental in closing the gap with OpenAI's ChatGPT.
The Architect Behind Google's AI Comeback
Shazeer is widely recognized as a pioneer in large language models (LLMs). His LinkedIn bio proudly states that he is the "Inventor of the LLM revolution including Transformer and Mixture of Experts," a reference to the seminal 2017 paper "Attention Is All You Need," which co-authored and is considered the birth of modern AI. Shazeer first joined Google in 2000 and spent two decades building key technologies, from the company's early ad system to its deep learning initiatives. In 2021, he left to co-found Character.AI with Daniel De Freitas after Google rejected a chatbot they had proposed internally.
The $2.7 Billion Deal and Its Aftermath
In August 2024, Google reacquired Shazeer through a complex deal that The Wall Street Journal valued at $2.7 billion. This gave Google non-exclusive rights to Character.AI's technology and brought Shazeer back onto its payroll, while Character.AI remained a separate legal entity. Initially, the investment appeared justified as Shazeer took on the role of Gemini co-lead and helped Google narrow the gap with ChatGPT. However, his departure comes just weeks after Google showcased Gemini 3.5 Flash and its Spark agent at I/O, leaving the company without a key architect of its AI resurgence.
Sam Altman's Long Pursuit of Shazeer
Sam Altman, CEO of OpenAI, has openly expressed his desire to work with Shazeer for years. In a post, Altman stated that Shazeer "is one of the people I have most wanted to work with since the very beginning of OpenAI," adding that it "only took 10 years" and predicting it would be "worth the wait." Shazeer reciprocated with a warm farewell, thanking the Google team and saying he was proud of "everything we've built together."
The Intensifying AI Talent War
Shazeer's move underscores the fierce competition for top AI talent among tech giants. OpenAI, Google, Meta, and Anthropic are all offering enormous compensation packages and engineering complex acqui-hire deals to secure leading researchers. Shazeer is among the most prominent figures to switch sides, highlighting the fluidity of the talent market.
Controversies and Future at OpenAI
Shazeer's tenure at Google was not without controversy. In November 2024, The Information reported that Google moderators had restricted his internal posts after he made contentious remarks about transgender individuals and accused some colleagues of antisemitism. He was reportedly removed from an internal channel, though no formal disciplinary action was taken. His new employer, OpenAI, is on the verge of going public, having confidentially filed for an IPO earlier this month. Altman finally has the engineer he pursued for a decade, while Google faces the reality that in the current market, top talent is rarely locked in permanently.
