also there is not clear roll out plan either. The system seems to be very useful for large document. I am willing to pay but they don't let me lol

It’s not api access but you can use Claude 2, including the 100k context model, in a chat interface via Poe and via Claude.ai.

Note: the 100k context model isn’t very good, it doesn’t remember things from the context nearly as well as it would from 8k of context.