Sergey Brin
Google cofounder Sergey Brin helped develop Google's latest AI model, Gemini.
  • Google hinted that its cofounder Sergey Brin played a key role in the tech giant's AI push. 
  • Brin is listed as a "core contributor" to Gemini, the company's latest AI model.
  • Google reportedly turned to Brin and Larry Page for help as it scrambled to respond to ChatGPT. 

Sergey Brin is back at Google as it appears he played a key role in building the company's GPT-4 rival.