Whoa, Brin helping develop "Gemini" to rival GPT-4 -> Sergey Brin has increased his visits to Google in recent months to three to four days a week, working with AI researchers building Google's Gemini
"Gemini could be released by the end of the year..."
https://www.wsj.com/articles/sergey-brin-google-ai-gemini-1b5aa41e?mod=djemalertNEWS