If you pay for the all products subscription, their AI features are now bundled in.
I believe that may be a relatively recent change, and I would not have known about it if I hadn't been curious and checked.
This sentiment feels overly dismissive about the possibilities here. This is the first pass at a new user experience, and I find it already to be compelling to try for various subjects.
Andrej Karpathy has been tweeting about it positively, and I believe he has a good intuition about these kinds of technologies. https://twitter.com/karpathy
I agree that using the frontier models would be much more interesting.