GPT-4 is out. There's also a LessWrong post on this with some a lot of discussion. The developers are doing a live-stream ~now (yesterday).
And it's been confirmed that Bing runs on GPT-4.
Also:
Here's an image from the OpenAI blog post about GPT-4:
(This is a short post.)
I don't have GPT-4 access, but I was curious how GPT-3.5 got the first question wrong. I just tried it:
It gets the bottom line correct, but the details are completely wrong.