2 sources·4h ago·businessOpenAI plans its biggest ChatGPT overhaul since launchFinancial Times—OpenAI plans its biggest ChatGPT overhaul since launchFinancial Times — OpenAI plans its biggest ChatGPT overhaul since launchFinancial Times — FT calls Medallia the biggest private-equity loss since 2008Nikkei Asia — OpenAI to launch a ChatGPT ad service for Japanese users