Even without Morgan Stanley claims, Greg Brockman and Satya have both said that GPT-3.5 was already internally used by them since the summer of last year and GP

Even without Morgan Stanley claims, Greg Brockman and Satya have both said that GPT-3.5 was already internally used by them since the summer of last year and GPT-4 in December. Greg mentions it in https://youtu.be/YtJEfTTD_Y4 https://youtu.be/YtJEfTTD_Y4 for example