(Bloomberg) -- OpenAI Chief Scientist and co-founder Ilya Sutskever is leaving the artificial intelligence company, a departure that ends months of speculation in Silicon Valley about the future of a top AI researcher who played a key role in the brief ouster of Sam Altman last year. Most Read from BloombergSlovak Premier Fighting for Life After Assassination AttemptS&P 500 Tops 5,300 in Record-Breaking Stock Rally: Markets WrapUS Inflation Ebbs for First Time in Six Months in Relief for FedChin